./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-theta/exponential-64.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-theta/exponential-64.i -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 c5877a70884380b10e463fa3cfc6b55a5014f8a8b2ecd81a270409b479a9f5bc --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:15:59,316 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:15:59,364 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:15:59,382 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:15:59,384 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:15:59,421 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:15:59,423 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:15:59,423 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:15:59,426 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:15:59,427 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:15:59,427 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:15:59,427 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:15:59,428 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:15:59,428 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:15:59,428 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:15:59,429 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:15:59,429 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:15:59,430 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:15:59,430 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:15:59,433 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:15:59,434 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:15:59,434 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:15:59,435 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:15:59,435 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:15:59,439 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:15:59,439 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:15:59,440 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:15:59,440 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:15:59,440 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:15:59,440 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:15:59,441 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:15:59,441 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:15:59,441 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:15:59,441 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:15:59,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:15:59,442 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:15:59,442 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:15:59,443 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:15:59,444 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:15:59,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:15:59,444 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:15:59,445 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:15:59,445 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:15:59,446 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:15:59,446 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5877a70884380b10e463fa3cfc6b55a5014f8a8b2ecd81a270409b479a9f5bc [2024-11-09 15:15:59,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:15:59,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:15:59,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:15:59,721 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:15:59,722 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:15:59,723 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/exponential-64.i [2024-11-09 15:16:01,235 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:16:01,470 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:16:01,471 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/exponential-64.i [2024-11-09 15:16:01,488 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e78b1f5c/3ae79234c4224317bc8f5f62decae3f6/FLAGe6c8158b6 [2024-11-09 15:16:01,801 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e78b1f5c/3ae79234c4224317bc8f5f62decae3f6 [2024-11-09 15:16:01,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:16:01,804 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:16:01,805 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:16:01,806 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:16:01,811 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:16:01,812 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:16:01" (1/1) ... [2024-11-09 15:16:01,813 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45cb57c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:01, skipping insertion in model container [2024-11-09 15:16:01,813 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:16:01" (1/1) ... [2024-11-09 15:16:01,855 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:16:02,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:16:02,249 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:16:02,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:16:02,360 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:16:02,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:02 WrapperNode [2024-11-09 15:16:02,361 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:16:02,362 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:16:02,363 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:16:02,363 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:16:02,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:02" (1/1) ... [2024-11-09 15:16:02,386 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:02" (1/1) ... [2024-11-09 15:16:02,410 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 67 [2024-11-09 15:16:02,411 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:16:02,412 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:16:02,412 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:16:02,412 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:16:02,423 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:02" (1/1) ... [2024-11-09 15:16:02,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:02" (1/1) ... [2024-11-09 15:16:02,426 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:02" (1/1) ... [2024-11-09 15:16:02,441 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 15:16:02,442 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:02" (1/1) ... [2024-11-09 15:16:02,442 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:02" (1/1) ... [2024-11-09 15:16:02,446 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:02" (1/1) ... [2024-11-09 15:16:02,449 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:02" (1/1) ... [2024-11-09 15:16:02,450 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:02" (1/1) ... [2024-11-09 15:16:02,451 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:02" (1/1) ... [2024-11-09 15:16:02,453 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:16:02,455 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:16:02,455 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:16:02,455 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:16:02,456 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:02" (1/1) ... [2024-11-09 15:16:02,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:16:02,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:02,494 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 15:16:02,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 15:16:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:16:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-09 15:16:02,535 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-09 15:16:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-09 15:16:02,535 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-09 15:16:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:16:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:16:02,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:16:02,537 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:16:02,656 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:16:02,658 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:16:02,827 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:16:02,827 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:16:02,945 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:16:02,946 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 15:16:02,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:16:02 BoogieIcfgContainer [2024-11-09 15:16:02,947 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:16:02,949 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:16:02,949 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:16:02,954 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:16:02,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:16:01" (1/3) ... [2024-11-09 15:16:02,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d61b60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:16:02, skipping insertion in model container [2024-11-09 15:16:02,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:02" (2/3) ... [2024-11-09 15:16:02,956 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d61b60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:16:02, skipping insertion in model container [2024-11-09 15:16:02,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:16:02" (3/3) ... [2024-11-09 15:16:02,958 INFO L112 eAbstractionObserver]: Analyzing ICFG exponential-64.i [2024-11-09 15:16:02,975 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:16:02,975 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-09 15:16:02,975 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:16:03,027 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 15:16:03,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 25 transitions, 58 flow [2024-11-09 15:16:03,081 INFO L124 PetriNetUnfolderBase]: 2/32 cut-off events. [2024-11-09 15:16:03,082 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:16:03,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 32 events. 2/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 48 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 23. Up to 4 conditions per place. [2024-11-09 15:16:03,085 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 25 transitions, 58 flow [2024-11-09 15:16:03,087 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 23 transitions, 53 flow [2024-11-09 15:16:03,095 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:16:03,103 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;@72d822, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:16:03,103 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 15:16:03,108 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:16:03,108 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-09 15:16:03,108 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:16:03,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:03,109 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-09 15:16:03,110 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:03,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:03,125 INFO L85 PathProgramCache]: Analyzing trace with hash 7174277, now seen corresponding path program 1 times [2024-11-09 15:16:03,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:03,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643365620] [2024-11-09 15:16:03,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:03,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:03,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:03,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:03,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643365620] [2024-11-09 15:16:03,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643365620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:03,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:03,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:03,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837148604] [2024-11-09 15:16:03,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:03,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:16:03,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:03,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:16:03,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:16:03,457 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 25 [2024-11-09 15:16:03,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:03,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:03,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 25 [2024-11-09 15:16:03,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:03,524 INFO L124 PetriNetUnfolderBase]: 27/91 cut-off events. [2024-11-09 15:16:03,526 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:16:03,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 91 events. 27/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 354 event pairs, 7 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 142. Up to 37 conditions per place. [2024-11-09 15:16:03,530 INFO L140 encePairwiseOnDemand]: 22/25 looper letters, 13 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2024-11-09 15:16:03,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 26 transitions, 89 flow [2024-11-09 15:16:03,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:16:03,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:16:03,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-09 15:16:03,542 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6933333333333334 [2024-11-09 15:16:03,543 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 53 flow. Second operand 3 states and 52 transitions. [2024-11-09 15:16:03,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 26 transitions, 89 flow [2024-11-09 15:16:03,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:03,549 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 60 flow [2024-11-09 15:16:03,551 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2024-11-09 15:16:03,556 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 2 predicate places. [2024-11-09 15:16:03,557 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 60 flow [2024-11-09 15:16:03,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:03,558 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:03,558 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:03,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:16:03,559 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:03,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:03,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1019706740, now seen corresponding path program 1 times [2024-11-09 15:16:03,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:03,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20119331] [2024-11-09 15:16:03,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:03,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:03,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:03,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:03,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20119331] [2024-11-09 15:16:03,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20119331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:03,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:03,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:03,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429768704] [2024-11-09 15:16:03,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:03,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:03,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:03,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:03,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:03,678 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 25 [2024-11-09 15:16:03,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:03,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:03,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 25 [2024-11-09 15:16:03,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:03,753 INFO L124 PetriNetUnfolderBase]: 31/89 cut-off events. [2024-11-09 15:16:03,754 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-09 15:16:03,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 89 events. 31/89 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 355 event pairs, 13 based on Foata normal form. 4/87 useless extension candidates. Maximal degree in co-relation 160. Up to 49 conditions per place. [2024-11-09 15:16:03,755 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 12 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2024-11-09 15:16:03,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 92 flow [2024-11-09 15:16:03,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:03,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:03,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2024-11-09 15:16:03,757 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-11-09 15:16:03,757 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 60 flow. Second operand 4 states and 56 transitions. [2024-11-09 15:16:03,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 92 flow [2024-11-09 15:16:03,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 88 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:16:03,760 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 60 flow [2024-11-09 15:16:03,761 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2024-11-09 15:16:03,762 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 2 predicate places. [2024-11-09 15:16:03,762 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 60 flow [2024-11-09 15:16:03,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:03,763 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:03,763 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:03,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 15:16:03,764 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:03,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:03,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1546137625, now seen corresponding path program 1 times [2024-11-09 15:16:03,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:03,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306943494] [2024-11-09 15:16:03,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:03,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:03,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:03,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:03,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306943494] [2024-11-09 15:16:03,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306943494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:03,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:03,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:03,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303089701] [2024-11-09 15:16:03,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:03,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:03,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:03,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:03,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:03,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 25 [2024-11-09 15:16:03,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:03,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:03,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 25 [2024-11-09 15:16:03,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:03,906 INFO L124 PetriNetUnfolderBase]: 27/83 cut-off events. [2024-11-09 15:16:03,907 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-09 15:16:03,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 83 events. 27/83 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 306 event pairs, 3 based on Foata normal form. 4/81 useless extension candidates. Maximal degree in co-relation 150. Up to 37 conditions per place. [2024-11-09 15:16:03,908 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 14 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2024-11-09 15:16:03,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 102 flow [2024-11-09 15:16:03,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:03,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:03,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-11-09 15:16:03,909 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-11-09 15:16:03,910 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 60 flow. Second operand 4 states and 58 transitions. [2024-11-09 15:16:03,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 102 flow [2024-11-09 15:16:03,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 96 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:16:03,911 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 58 flow [2024-11-09 15:16:03,911 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2024-11-09 15:16:03,912 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2024-11-09 15:16:03,912 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 58 flow [2024-11-09 15:16:03,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:03,912 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:03,913 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:03,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 15:16:03,913 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:03,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:03,914 INFO L85 PathProgramCache]: Analyzing trace with hash 220434298, now seen corresponding path program 1 times [2024-11-09 15:16:03,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:03,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909774701] [2024-11-09 15:16:03,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:03,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:16:03,936 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 15:16:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:16:03,972 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 15:16:03,972 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 15:16:03,973 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-09 15:16:03,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-09 15:16:03,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-09 15:16:03,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-09 15:16:03,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-09 15:16:03,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-09 15:16:03,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 15:16:03,976 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-09 15:16:03,979 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 15:16:03,979 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 15:16:04,011 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 15:16:04,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 33 transitions, 86 flow [2024-11-09 15:16:04,029 INFO L124 PetriNetUnfolderBase]: 3/54 cut-off events. [2024-11-09 15:16:04,029 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 15:16:04,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 54 events. 3/54 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 89 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 49. Up to 6 conditions per place. [2024-11-09 15:16:04,031 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 33 transitions, 86 flow [2024-11-09 15:16:04,032 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 31 transitions, 80 flow [2024-11-09 15:16:04,034 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:16:04,036 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;@72d822, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:16:04,036 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 15:16:04,038 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:16:04,039 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-09 15:16:04,039 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:16:04,039 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:04,039 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-09 15:16:04,039 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:04,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:04,040 INFO L85 PathProgramCache]: Analyzing trace with hash 8190149, now seen corresponding path program 1 times [2024-11-09 15:16:04,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:04,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365234080] [2024-11-09 15:16:04,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:04,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:04,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:04,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365234080] [2024-11-09 15:16:04,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365234080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:04,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:04,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:04,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166783401] [2024-11-09 15:16:04,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:04,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:16:04,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:04,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:16:04,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:16:04,082 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 33 [2024-11-09 15:16:04,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:04,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:04,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 33 [2024-11-09 15:16:04,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:04,199 INFO L124 PetriNetUnfolderBase]: 247/555 cut-off events. [2024-11-09 15:16:04,199 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-09 15:16:04,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 555 events. 247/555 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3147 event pairs, 99 based on Foata normal form. 0/475 useless extension candidates. Maximal degree in co-relation 418. Up to 369 conditions per place. [2024-11-09 15:16:04,210 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 20 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2024-11-09 15:16:04,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 136 flow [2024-11-09 15:16:04,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:16:04,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:16:04,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-11-09 15:16:04,213 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7171717171717171 [2024-11-09 15:16:04,213 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 80 flow. Second operand 3 states and 71 transitions. [2024-11-09 15:16:04,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 136 flow [2024-11-09 15:16:04,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:04,216 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 91 flow [2024-11-09 15:16:04,216 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2024-11-09 15:16:04,216 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2024-11-09 15:16:04,217 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 91 flow [2024-11-09 15:16:04,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:04,218 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:04,218 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:04,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:16:04,218 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:04,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:04,219 INFO L85 PathProgramCache]: Analyzing trace with hash -814131878, now seen corresponding path program 1 times [2024-11-09 15:16:04,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:04,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356344061] [2024-11-09 15:16:04,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:04,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:04,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:04,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:04,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356344061] [2024-11-09 15:16:04,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356344061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:04,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:04,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:04,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065052633] [2024-11-09 15:16:04,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:04,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:04,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:04,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:04,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:04,396 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2024-11-09 15:16:04,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:04,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:04,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2024-11-09 15:16:04,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:04,516 INFO L124 PetriNetUnfolderBase]: 283/571 cut-off events. [2024-11-09 15:16:04,517 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-09 15:16:04,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1110 conditions, 571 events. 283/571 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3250 event pairs, 191 based on Foata normal form. 20/561 useless extension candidates. Maximal degree in co-relation 466. Up to 333 conditions per place. [2024-11-09 15:16:04,522 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 18 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2024-11-09 15:16:04,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 35 transitions, 141 flow [2024-11-09 15:16:04,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:04,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:04,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-11-09 15:16:04,524 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-11-09 15:16:04,524 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 91 flow. Second operand 4 states and 78 transitions. [2024-11-09 15:16:04,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 35 transitions, 141 flow [2024-11-09 15:16:04,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 35 transitions, 139 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:04,526 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 95 flow [2024-11-09 15:16:04,527 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2024-11-09 15:16:04,527 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2024-11-09 15:16:04,528 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 95 flow [2024-11-09 15:16:04,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:04,528 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:04,528 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:04,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 15:16:04,529 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:04,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:04,529 INFO L85 PathProgramCache]: Analyzing trace with hash 531715834, now seen corresponding path program 1 times [2024-11-09 15:16:04,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:04,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388084607] [2024-11-09 15:16:04,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:04,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:04,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:04,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:04,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388084607] [2024-11-09 15:16:04,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388084607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:04,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:04,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:04,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399350607] [2024-11-09 15:16:04,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:04,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:04,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:04,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:04,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:04,581 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2024-11-09 15:16:04,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:04,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:04,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2024-11-09 15:16:04,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:04,695 INFO L124 PetriNetUnfolderBase]: 279/561 cut-off events. [2024-11-09 15:16:04,695 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-11-09 15:16:04,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1129 conditions, 561 events. 279/561 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3040 event pairs, 111 based on Foata normal form. 4/527 useless extension candidates. Maximal degree in co-relation 477. Up to 417 conditions per place. [2024-11-09 15:16:04,703 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 22 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2024-11-09 15:16:04,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 161 flow [2024-11-09 15:16:04,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:04,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:04,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2024-11-09 15:16:04,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2024-11-09 15:16:04,707 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 95 flow. Second operand 4 states and 82 transitions. [2024-11-09 15:16:04,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 161 flow [2024-11-09 15:16:04,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 151 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:16:04,710 INFO L231 Difference]: Finished difference. Result has 45 places, 32 transitions, 103 flow [2024-11-09 15:16:04,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=45, PETRI_TRANSITIONS=32} [2024-11-09 15:16:04,711 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2024-11-09 15:16:04,712 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 32 transitions, 103 flow [2024-11-09 15:16:04,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:04,712 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:04,712 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:04,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 15:16:04,713 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:04,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:04,713 INFO L85 PathProgramCache]: Analyzing trace with hash 507288789, now seen corresponding path program 1 times [2024-11-09 15:16:04,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:04,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524634682] [2024-11-09 15:16:04,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:04,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:04,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:04,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:04,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524634682] [2024-11-09 15:16:04,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524634682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:04,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:04,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:16:04,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368215143] [2024-11-09 15:16:04,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:04,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:04,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:04,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:04,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:04,803 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2024-11-09 15:16:04,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 32 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:04,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:04,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2024-11-09 15:16:04,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:04,922 INFO L124 PetriNetUnfolderBase]: 391/735 cut-off events. [2024-11-09 15:16:04,922 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2024-11-09 15:16:04,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1489 conditions, 735 events. 391/735 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4103 event pairs, 299 based on Foata normal form. 20/715 useless extension candidates. Maximal degree in co-relation 624. Up to 502 conditions per place. [2024-11-09 15:16:04,928 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 27 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2024-11-09 15:16:04,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 42 transitions, 183 flow [2024-11-09 15:16:04,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:04,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:04,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-11-09 15:16:04,930 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2024-11-09 15:16:04,930 INFO L175 Difference]: Start difference. First operand has 45 places, 32 transitions, 103 flow. Second operand 4 states and 86 transitions. [2024-11-09 15:16:04,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 42 transitions, 183 flow [2024-11-09 15:16:04,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 42 transitions, 179 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:16:04,932 INFO L231 Difference]: Finished difference. Result has 48 places, 34 transitions, 121 flow [2024-11-09 15:16:04,932 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=48, PETRI_TRANSITIONS=34} [2024-11-09 15:16:04,935 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2024-11-09 15:16:04,935 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 34 transitions, 121 flow [2024-11-09 15:16:04,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:04,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:04,936 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:04,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 15:16:04,936 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:04,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:04,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1349342509, now seen corresponding path program 1 times [2024-11-09 15:16:04,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:04,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556133531] [2024-11-09 15:16:04,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:04,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:05,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:16:05,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:05,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556133531] [2024-11-09 15:16:05,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556133531] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:05,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471752079] [2024-11-09 15:16:05,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:05,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:05,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:05,012 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:16:05,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:16:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:05,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:16:05,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:16:05,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:16:05,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:16:05,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:16:05,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471752079] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:16:05,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:16:05,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 15:16:05,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779808150] [2024-11-09 15:16:05,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:16:05,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 15:16:05,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:05,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 15:16:05,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-09 15:16:05,262 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2024-11-09 15:16:05,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 34 transitions, 121 flow. Second operand has 11 states, 11 states have (on average 16.363636363636363) internal successors, (180), 11 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:05,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:05,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2024-11-09 15:16:05,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:05,390 INFO L124 PetriNetUnfolderBase]: 187/369 cut-off events. [2024-11-09 15:16:05,391 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-11-09 15:16:05,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 369 events. 187/369 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1844 event pairs, 15 based on Foata normal form. 20/379 useless extension candidates. Maximal degree in co-relation 781. Up to 96 conditions per place. [2024-11-09 15:16:05,394 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 29 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2024-11-09 15:16:05,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 193 flow [2024-11-09 15:16:05,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 15:16:05,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 15:16:05,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-11-09 15:16:05,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5643939393939394 [2024-11-09 15:16:05,395 INFO L175 Difference]: Start difference. First operand has 48 places, 34 transitions, 121 flow. Second operand 8 states and 149 transitions. [2024-11-09 15:16:05,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 193 flow [2024-11-09 15:16:05,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 193 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:16:05,397 INFO L231 Difference]: Finished difference. Result has 48 places, 26 transitions, 97 flow [2024-11-09 15:16:05,397 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=97, PETRI_PLACES=48, PETRI_TRANSITIONS=26} [2024-11-09 15:16:05,398 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2024-11-09 15:16:05,398 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 26 transitions, 97 flow [2024-11-09 15:16:05,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.363636363636363) internal successors, (180), 11 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:05,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:05,399 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:05,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 15:16:05,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:05,604 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:05,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:05,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1335214088, now seen corresponding path program 1 times [2024-11-09 15:16:05,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:05,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760818865] [2024-11-09 15:16:05,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:05,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:05,668 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:05,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:05,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760818865] [2024-11-09 15:16:05,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760818865] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:05,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247755191] [2024-11-09 15:16:05,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:05,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:05,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:05,671 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:16:05,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:16:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:05,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:16:05,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:16:05,767 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:05,767 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:16:05,818 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:05,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247755191] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:16:05,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:16:05,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-09 15:16:05,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918113752] [2024-11-09 15:16:05,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:16:05,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 15:16:05,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:05,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 15:16:05,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-09 15:16:05,832 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2024-11-09 15:16:05,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 26 transitions, 97 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 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) [2024-11-09 15:16:05,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:05,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2024-11-09 15:16:05,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:05,924 INFO L124 PetriNetUnfolderBase]: 155/323 cut-off events. [2024-11-09 15:16:05,925 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2024-11-09 15:16:05,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 323 events. 155/323 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1577 event pairs, 15 based on Foata normal form. 16/329 useless extension candidates. Maximal degree in co-relation 712. Up to 96 conditions per place. [2024-11-09 15:16:05,927 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 25 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2024-11-09 15:16:05,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 40 transitions, 181 flow [2024-11-09 15:16:05,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:16:05,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:16:05,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-11-09 15:16:05,929 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5584415584415584 [2024-11-09 15:16:05,929 INFO L175 Difference]: Start difference. First operand has 48 places, 26 transitions, 97 flow. Second operand 7 states and 129 transitions. [2024-11-09 15:16:05,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 40 transitions, 181 flow [2024-11-09 15:16:05,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 40 transitions, 166 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-09 15:16:05,932 INFO L231 Difference]: Finished difference. Result has 46 places, 25 transitions, 86 flow [2024-11-09 15:16:05,932 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=86, PETRI_PLACES=46, PETRI_TRANSITIONS=25} [2024-11-09 15:16:05,933 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2024-11-09 15:16:05,933 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 25 transitions, 86 flow [2024-11-09 15:16:05,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 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) [2024-11-09 15:16:05,933 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:05,933 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:05,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 15:16:06,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 15:16:06,134 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:06,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:06,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1054474366, now seen corresponding path program 1 times [2024-11-09 15:16:06,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:06,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659940129] [2024-11-09 15:16:06,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:06,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:16:06,149 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 15:16:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:16:06,165 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 15:16:06,165 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 15:16:06,166 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-09 15:16:06,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-09 15:16:06,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-09 15:16:06,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-09 15:16:06,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-09 15:16:06,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-09 15:16:06,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 15:16:06,167 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:06,167 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 15:16:06,167 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 15:16:06,187 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 15:16:06,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 41 transitions, 118 flow [2024-11-09 15:16:06,195 INFO L124 PetriNetUnfolderBase]: 4/76 cut-off events. [2024-11-09 15:16:06,195 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-09 15:16:06,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 76 events. 4/76 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 79. Up to 8 conditions per place. [2024-11-09 15:16:06,195 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 41 transitions, 118 flow [2024-11-09 15:16:06,196 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 111 flow [2024-11-09 15:16:06,197 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:16:06,197 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;@72d822, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:16:06,197 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 15:16:06,198 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:16:06,199 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-09 15:16:06,199 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:16:06,199 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:06,199 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-09 15:16:06,199 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:06,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:06,200 INFO L85 PathProgramCache]: Analyzing trace with hash 9452293, now seen corresponding path program 1 times [2024-11-09 15:16:06,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:06,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22645703] [2024-11-09 15:16:06,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:06,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:06,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:06,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:06,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22645703] [2024-11-09 15:16:06,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22645703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:06,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:06,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:06,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023709616] [2024-11-09 15:16:06,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:06,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:16:06,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:06,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:16:06,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:16:06,219 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2024-11-09 15:16:06,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:06,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:06,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2024-11-09 15:16:06,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:06,471 INFO L124 PetriNetUnfolderBase]: 1575/2859 cut-off events. [2024-11-09 15:16:06,472 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2024-11-09 15:16:06,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5266 conditions, 2859 events. 1575/2859 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 18811 event pairs, 915 based on Foata normal form. 0/2523 useless extension candidates. Maximal degree in co-relation 2330. Up to 2145 conditions per place. [2024-11-09 15:16:06,498 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 24 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2024-11-09 15:16:06,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 175 flow [2024-11-09 15:16:06,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:16:06,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:16:06,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-11-09 15:16:06,499 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7073170731707317 [2024-11-09 15:16:06,499 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 111 flow. Second operand 3 states and 87 transitions. [2024-11-09 15:16:06,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 175 flow [2024-11-09 15:16:06,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 45 transitions, 170 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:06,502 INFO L231 Difference]: Finished difference. Result has 54 places, 40 transitions, 118 flow [2024-11-09 15:16:06,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=54, PETRI_TRANSITIONS=40} [2024-11-09 15:16:06,503 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-11-09 15:16:06,503 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 40 transitions, 118 flow [2024-11-09 15:16:06,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:06,503 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:06,503 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:06,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 15:16:06,503 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:06,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:06,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1861794512, now seen corresponding path program 1 times [2024-11-09 15:16:06,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:06,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153069090] [2024-11-09 15:16:06,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:06,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:06,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:06,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:06,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153069090] [2024-11-09 15:16:06,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153069090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:06,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:06,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:06,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609160205] [2024-11-09 15:16:06,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:06,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:06,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:06,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:06,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:06,538 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-09 15:16:06,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 40 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:06,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:06,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-09 15:16:06,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:06,799 INFO L124 PetriNetUnfolderBase]: 1803/3003 cut-off events. [2024-11-09 15:16:06,799 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2024-11-09 15:16:06,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5848 conditions, 3003 events. 1803/3003 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 18801 event pairs, 1263 based on Foata normal form. 84/2961 useless extension candidates. Maximal degree in co-relation 2578. Up to 1853 conditions per place. [2024-11-09 15:16:06,828 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 24 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-11-09 15:16:06,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 45 transitions, 184 flow [2024-11-09 15:16:06,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:06,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:06,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-11-09 15:16:06,829 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2024-11-09 15:16:06,829 INFO L175 Difference]: Start difference. First operand has 54 places, 40 transitions, 118 flow. Second operand 4 states and 100 transitions. [2024-11-09 15:16:06,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 45 transitions, 184 flow [2024-11-09 15:16:06,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 45 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:06,831 INFO L231 Difference]: Finished difference. Result has 55 places, 39 transitions, 122 flow [2024-11-09 15:16:06,831 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=55, PETRI_TRANSITIONS=39} [2024-11-09 15:16:06,832 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-11-09 15:16:06,832 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 122 flow [2024-11-09 15:16:06,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:06,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:06,832 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:06,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 15:16:06,832 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:06,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:06,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1881054707, now seen corresponding path program 1 times [2024-11-09 15:16:06,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:06,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424131708] [2024-11-09 15:16:06,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:06,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:06,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:06,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:06,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424131708] [2024-11-09 15:16:06,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424131708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:06,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:06,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:06,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113657980] [2024-11-09 15:16:06,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:06,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:06,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:06,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:06,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:06,862 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-09 15:16:06,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:06,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:06,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-09 15:16:06,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:07,114 INFO L124 PetriNetUnfolderBase]: 1799/2995 cut-off events. [2024-11-09 15:16:07,114 INFO L125 PetriNetUnfolderBase]: For 514/514 co-relation queries the response was YES. [2024-11-09 15:16:07,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5997 conditions, 2995 events. 1799/2995 cut-off events. For 514/514 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 18373 event pairs, 1055 based on Foata normal form. 4/2833 useless extension candidates. Maximal degree in co-relation 2654. Up to 2449 conditions per place. [2024-11-09 15:16:07,144 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 26 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-11-09 15:16:07,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 46 transitions, 196 flow [2024-11-09 15:16:07,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:07,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:07,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-09 15:16:07,145 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6219512195121951 [2024-11-09 15:16:07,145 INFO L175 Difference]: Start difference. First operand has 55 places, 39 transitions, 122 flow. Second operand 4 states and 102 transitions. [2024-11-09 15:16:07,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 46 transitions, 196 flow [2024-11-09 15:16:07,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 46 transitions, 186 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:16:07,148 INFO L231 Difference]: Finished difference. Result has 57 places, 40 transitions, 130 flow [2024-11-09 15:16:07,148 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=57, PETRI_TRANSITIONS=40} [2024-11-09 15:16:07,149 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-11-09 15:16:07,149 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 40 transitions, 130 flow [2024-11-09 15:16:07,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:07,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:07,150 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:07,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 15:16:07,150 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:07,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:07,150 INFO L85 PathProgramCache]: Analyzing trace with hash -2062158869, now seen corresponding path program 1 times [2024-11-09 15:16:07,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:07,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607154450] [2024-11-09 15:16:07,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:07,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:07,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:07,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:07,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607154450] [2024-11-09 15:16:07,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607154450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:07,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:07,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:16:07,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980686311] [2024-11-09 15:16:07,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:07,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:07,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:07,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:07,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:07,192 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-09 15:16:07,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 40 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:07,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:07,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-09 15:16:07,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:07,559 INFO L124 PetriNetUnfolderBase]: 2487/3935 cut-off events. [2024-11-09 15:16:07,560 INFO L125 PetriNetUnfolderBase]: For 360/360 co-relation queries the response was YES. [2024-11-09 15:16:07,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7891 conditions, 3935 events. 2487/3935 cut-off events. For 360/360 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 24175 event pairs, 1947 based on Foata normal form. 84/3851 useless extension candidates. Maximal degree in co-relation 3472. Up to 2790 conditions per place. [2024-11-09 15:16:07,595 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 35 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2024-11-09 15:16:07,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 54 transitions, 234 flow [2024-11-09 15:16:07,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:07,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:07,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-11-09 15:16:07,596 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6707317073170732 [2024-11-09 15:16:07,597 INFO L175 Difference]: Start difference. First operand has 57 places, 40 transitions, 130 flow. Second operand 4 states and 110 transitions. [2024-11-09 15:16:07,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 54 transitions, 234 flow [2024-11-09 15:16:07,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 54 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:16:07,599 INFO L231 Difference]: Finished difference. Result has 60 places, 42 transitions, 148 flow [2024-11-09 15:16:07,599 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=60, PETRI_TRANSITIONS=42} [2024-11-09 15:16:07,600 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2024-11-09 15:16:07,600 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 42 transitions, 148 flow [2024-11-09 15:16:07,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:07,601 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:07,601 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:07,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 15:16:07,601 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:07,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:07,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1437635334, now seen corresponding path program 1 times [2024-11-09 15:16:07,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:07,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406374296] [2024-11-09 15:16:07,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:07,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:07,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:16:07,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:07,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406374296] [2024-11-09 15:16:07,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406374296] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:07,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662395739] [2024-11-09 15:16:07,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:07,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:07,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:07,657 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:16:07,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:16:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:07,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:16:07,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:16:07,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:16:07,794 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:16:07,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:16:07,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662395739] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:16:07,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:16:07,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 15:16:07,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198626536] [2024-11-09 15:16:07,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:16:07,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 15:16:07,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:07,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 15:16:07,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-09 15:16:07,858 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-09 15:16:07,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 42 transitions, 148 flow. Second operand has 11 states, 11 states have (on average 20.363636363636363) internal successors, (224), 11 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:07,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:07,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-09 15:16:07,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:08,236 INFO L124 PetriNetUnfolderBase]: 2091/3379 cut-off events. [2024-11-09 15:16:08,236 INFO L125 PetriNetUnfolderBase]: For 644/644 co-relation queries the response was YES. [2024-11-09 15:16:08,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7324 conditions, 3379 events. 2091/3379 cut-off events. For 644/644 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 20316 event pairs, 255 based on Foata normal form. 20/3325 useless extension candidates. Maximal degree in co-relation 4879. Up to 1345 conditions per place. [2024-11-09 15:16:08,265 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 47 selfloop transitions, 8 changer transitions 0/72 dead transitions. [2024-11-09 15:16:08,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 72 transitions, 324 flow [2024-11-09 15:16:08,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 15:16:08,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 15:16:08,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-11-09 15:16:08,267 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6067073170731707 [2024-11-09 15:16:08,267 INFO L175 Difference]: Start difference. First operand has 60 places, 42 transitions, 148 flow. Second operand 8 states and 199 transitions. [2024-11-09 15:16:08,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 72 transitions, 324 flow [2024-11-09 15:16:08,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 72 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:08,278 INFO L231 Difference]: Finished difference. Result has 70 places, 46 transitions, 197 flow [2024-11-09 15:16:08,278 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=197, PETRI_PLACES=70, PETRI_TRANSITIONS=46} [2024-11-09 15:16:08,279 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2024-11-09 15:16:08,279 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 46 transitions, 197 flow [2024-11-09 15:16:08,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.363636363636363) internal successors, (224), 11 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:08,279 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:08,279 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:08,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 15:16:08,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:08,480 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:08,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:08,481 INFO L85 PathProgramCache]: Analyzing trace with hash 2032764145, now seen corresponding path program 1 times [2024-11-09 15:16:08,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:08,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632248382] [2024-11-09 15:16:08,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:08,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:08,544 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:08,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:08,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632248382] [2024-11-09 15:16:08,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632248382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:08,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311870648] [2024-11-09 15:16:08,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:08,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:08,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:08,548 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:16:08,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:16:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:08,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:16:08,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:16:08,641 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:08,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:16:08,689 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:08,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311870648] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:16:08,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:16:08,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-09 15:16:08,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441453262] [2024-11-09 15:16:08,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:16:08,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 15:16:08,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:08,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 15:16:08,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-09 15:16:08,706 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-09 15:16:08,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 46 transitions, 197 flow. Second operand has 10 states, 10 states have (on average 20.6) internal successors, (206), 10 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:08,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:08,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-09 15:16:08,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:09,037 INFO L124 PetriNetUnfolderBase]: 1867/3041 cut-off events. [2024-11-09 15:16:09,037 INFO L125 PetriNetUnfolderBase]: For 1374/1374 co-relation queries the response was YES. [2024-11-09 15:16:09,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7084 conditions, 3041 events. 1867/3041 cut-off events. For 1374/1374 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 17904 event pairs, 63 based on Foata normal form. 80/3079 useless extension candidates. Maximal degree in co-relation 4700. Up to 1600 conditions per place. [2024-11-09 15:16:09,064 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 48 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2024-11-09 15:16:09,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 354 flow [2024-11-09 15:16:09,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 15:16:09,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 15:16:09,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-11-09 15:16:09,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5880758807588076 [2024-11-09 15:16:09,066 INFO L175 Difference]: Start difference. First operand has 70 places, 46 transitions, 197 flow. Second operand 9 states and 217 transitions. [2024-11-09 15:16:09,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 354 flow [2024-11-09 15:16:09,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 72 transitions, 340 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-09 15:16:09,075 INFO L231 Difference]: Finished difference. Result has 72 places, 44 transitions, 184 flow [2024-11-09 15:16:09,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=184, PETRI_PLACES=72, PETRI_TRANSITIONS=44} [2024-11-09 15:16:09,075 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 20 predicate places. [2024-11-09 15:16:09,076 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 44 transitions, 184 flow [2024-11-09 15:16:09,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.6) internal successors, (206), 10 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:09,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:09,076 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:09,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 15:16:09,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 15:16:09,277 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:09,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:09,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1734797716, now seen corresponding path program 1 times [2024-11-09 15:16:09,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:09,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550686154] [2024-11-09 15:16:09,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:09,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:16:09,289 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 15:16:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:16:09,307 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 15:16:09,308 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 15:16:09,308 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-09 15:16:09,308 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-09 15:16:09,308 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-09 15:16:09,309 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-09 15:16:09,309 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-09 15:16:09,309 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-09 15:16:09,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 15:16:09,309 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:09,310 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 15:16:09,310 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-09 15:16:09,337 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 15:16:09,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 49 transitions, 154 flow [2024-11-09 15:16:09,351 INFO L124 PetriNetUnfolderBase]: 5/98 cut-off events. [2024-11-09 15:16:09,352 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-09 15:16:09,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 98 events. 5/98 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 178 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 111. Up to 10 conditions per place. [2024-11-09 15:16:09,352 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 49 transitions, 154 flow [2024-11-09 15:16:09,353 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 47 transitions, 146 flow [2024-11-09 15:16:09,353 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:16:09,354 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;@72d822, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:16:09,354 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 15:16:09,355 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:16:09,355 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-09 15:16:09,355 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:16:09,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:09,356 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-09 15:16:09,356 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:09,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:09,356 INFO L85 PathProgramCache]: Analyzing trace with hash 10960709, now seen corresponding path program 1 times [2024-11-09 15:16:09,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:09,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256595102] [2024-11-09 15:16:09,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:09,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:09,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:09,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:09,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256595102] [2024-11-09 15:16:09,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256595102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:09,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:09,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:09,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570432987] [2024-11-09 15:16:09,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:09,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:16:09,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:09,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:16:09,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:16:09,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 49 [2024-11-09 15:16:09,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:09,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:09,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 49 [2024-11-09 15:16:09,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:10,774 INFO L124 PetriNetUnfolderBase]: 8679/13867 cut-off events. [2024-11-09 15:16:10,775 INFO L125 PetriNetUnfolderBase]: For 2844/2844 co-relation queries the response was YES. [2024-11-09 15:16:10,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26132 conditions, 13867 events. 8679/13867 cut-off events. For 2844/2844 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 98237 event pairs, 5971 based on Foata normal form. 0/12512 useless extension candidates. Maximal degree in co-relation 11866. Up to 11041 conditions per place. [2024-11-09 15:16:10,892 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 28 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2024-11-09 15:16:10,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 53 transitions, 218 flow [2024-11-09 15:16:10,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:16:10,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:16:10,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-09 15:16:10,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7006802721088435 [2024-11-09 15:16:10,893 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 146 flow. Second operand 3 states and 103 transitions. [2024-11-09 15:16:10,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 53 transitions, 218 flow [2024-11-09 15:16:10,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 53 transitions, 205 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:10,904 INFO L231 Difference]: Finished difference. Result has 66 places, 48 transitions, 145 flow [2024-11-09 15:16:10,904 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=66, PETRI_TRANSITIONS=48} [2024-11-09 15:16:10,905 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 2 predicate places. [2024-11-09 15:16:10,905 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 48 transitions, 145 flow [2024-11-09 15:16:10,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:10,905 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:10,905 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:10,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 15:16:10,905 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:10,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:10,906 INFO L85 PathProgramCache]: Analyzing trace with hash 132272654, now seen corresponding path program 1 times [2024-11-09 15:16:10,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:10,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418098313] [2024-11-09 15:16:10,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:10,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:10,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:10,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:10,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418098313] [2024-11-09 15:16:10,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418098313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:10,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:10,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:10,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644262329] [2024-11-09 15:16:10,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:10,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:10,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:10,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:10,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:10,938 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-09 15:16:10,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 48 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:10,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:10,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-09 15:16:10,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:12,393 INFO L124 PetriNetUnfolderBase]: 9931/14779 cut-off events. [2024-11-09 15:16:12,393 INFO L125 PetriNetUnfolderBase]: For 2000/2000 co-relation queries the response was YES. [2024-11-09 15:16:12,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28890 conditions, 14779 events. 9931/14779 cut-off events. For 2000/2000 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 96972 event pairs, 7087 based on Foata normal form. 340/14610 useless extension candidates. Maximal degree in co-relation 13074. Up to 9469 conditions per place. [2024-11-09 15:16:12,513 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 30 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2024-11-09 15:16:12,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 55 transitions, 227 flow [2024-11-09 15:16:12,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:12,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:12,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-11-09 15:16:12,515 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6224489795918368 [2024-11-09 15:16:12,515 INFO L175 Difference]: Start difference. First operand has 66 places, 48 transitions, 145 flow. Second operand 4 states and 122 transitions. [2024-11-09 15:16:12,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 55 transitions, 227 flow [2024-11-09 15:16:12,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 55 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:12,522 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 149 flow [2024-11-09 15:16:12,522 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=149, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2024-11-09 15:16:12,523 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 3 predicate places. [2024-11-09 15:16:12,523 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 149 flow [2024-11-09 15:16:12,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:12,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:12,524 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:12,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 15:16:12,524 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:12,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:12,525 INFO L85 PathProgramCache]: Analyzing trace with hash -194514656, now seen corresponding path program 1 times [2024-11-09 15:16:12,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:12,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841641539] [2024-11-09 15:16:12,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:12,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:12,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:12,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:12,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841641539] [2024-11-09 15:16:12,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841641539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:12,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:12,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:12,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27984768] [2024-11-09 15:16:12,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:12,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:12,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:12,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:12,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:12,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-09 15:16:12,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:12,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:12,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-09 15:16:12,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:13,650 INFO L124 PetriNetUnfolderBase]: 9927/14769 cut-off events. [2024-11-09 15:16:13,650 INFO L125 PetriNetUnfolderBase]: For 2850/2850 co-relation queries the response was YES. [2024-11-09 15:16:13,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29549 conditions, 14769 events. 9927/14769 cut-off events. For 2850/2850 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 95840 event pairs, 6879 based on Foata normal form. 4/14100 useless extension candidates. Maximal degree in co-relation 13405. Up to 12625 conditions per place. [2024-11-09 15:16:13,863 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 30 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2024-11-09 15:16:13,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 54 transitions, 231 flow [2024-11-09 15:16:13,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:13,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:13,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-11-09 15:16:13,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6224489795918368 [2024-11-09 15:16:13,864 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 149 flow. Second operand 4 states and 122 transitions. [2024-11-09 15:16:13,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 54 transitions, 231 flow [2024-11-09 15:16:13,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 54 transitions, 221 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:16:13,870 INFO L231 Difference]: Finished difference. Result has 69 places, 48 transitions, 157 flow [2024-11-09 15:16:13,870 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=157, PETRI_PLACES=69, PETRI_TRANSITIONS=48} [2024-11-09 15:16:13,870 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 5 predicate places. [2024-11-09 15:16:13,870 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 48 transitions, 157 flow [2024-11-09 15:16:13,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:13,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:13,871 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:13,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 15:16:13,872 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:13,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:13,872 INFO L85 PathProgramCache]: Analyzing trace with hash -874879479, now seen corresponding path program 1 times [2024-11-09 15:16:13,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:13,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383767408] [2024-11-09 15:16:13,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:13,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:13,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:13,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:13,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383767408] [2024-11-09 15:16:13,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383767408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:13,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:13,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:16:13,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461383464] [2024-11-09 15:16:13,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:13,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:13,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:13,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:13,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:13,917 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-09 15:16:13,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 48 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:13,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:13,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-09 15:16:13,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:15,540 INFO L124 PetriNetUnfolderBase]: 13687/19551 cut-off events. [2024-11-09 15:16:15,541 INFO L125 PetriNetUnfolderBase]: For 2184/2184 co-relation queries the response was YES. [2024-11-09 15:16:15,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39125 conditions, 19551 events. 13687/19551 cut-off events. For 2184/2184 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 123833 event pairs, 10843 based on Foata normal form. 340/19212 useless extension candidates. Maximal degree in co-relation 17680. Up to 14246 conditions per place. [2024-11-09 15:16:15,676 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 43 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2024-11-09 15:16:15,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 285 flow [2024-11-09 15:16:15,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:15,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:15,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-11-09 15:16:15,677 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6836734693877551 [2024-11-09 15:16:15,678 INFO L175 Difference]: Start difference. First operand has 69 places, 48 transitions, 157 flow. Second operand 4 states and 134 transitions. [2024-11-09 15:16:15,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 285 flow [2024-11-09 15:16:15,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 66 transitions, 281 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:16:15,687 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 175 flow [2024-11-09 15:16:15,687 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2024-11-09 15:16:15,688 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 8 predicate places. [2024-11-09 15:16:15,688 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 175 flow [2024-11-09 15:16:15,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:15,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:15,688 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:15,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-09 15:16:15,689 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:15,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:15,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1672658375, now seen corresponding path program 1 times [2024-11-09 15:16:15,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:15,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121515410] [2024-11-09 15:16:15,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:15,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:16:15,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:15,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121515410] [2024-11-09 15:16:15,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121515410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:15,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628362711] [2024-11-09 15:16:15,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:15,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:15,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:15,734 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:16:15,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 15:16:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:15,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:16:15,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:16:15,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:16:15,869 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:16:15,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:16:15,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628362711] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:16:15,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:16:15,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 15:16:15,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820697471] [2024-11-09 15:16:15,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:16:15,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 15:16:15,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:15,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 15:16:15,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-09 15:16:15,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-09 15:16:15,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 175 flow. Second operand has 11 states, 11 states have (on average 24.363636363636363) internal successors, (268), 11 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:15,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:15,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-09 15:16:15,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:17,554 INFO L124 PetriNetUnfolderBase]: 12267/17961 cut-off events. [2024-11-09 15:16:17,554 INFO L125 PetriNetUnfolderBase]: For 3492/3492 co-relation queries the response was YES. [2024-11-09 15:16:17,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38548 conditions, 17961 events. 12267/17961 cut-off events. For 3492/3492 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 116174 event pairs, 2495 based on Foata normal form. 20/17672 useless extension candidates. Maximal degree in co-relation 24837. Up to 8001 conditions per place. [2024-11-09 15:16:17,651 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 53 selfloop transitions, 8 changer transitions 0/82 dead transitions. [2024-11-09 15:16:17,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 82 transitions, 367 flow [2024-11-09 15:16:17,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 15:16:17,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 15:16:17,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 237 transitions. [2024-11-09 15:16:17,653 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6045918367346939 [2024-11-09 15:16:17,653 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 175 flow. Second operand 8 states and 237 transitions. [2024-11-09 15:16:17,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 82 transitions, 367 flow [2024-11-09 15:16:17,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 82 transitions, 365 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:17,697 INFO L231 Difference]: Finished difference. Result has 82 places, 54 transitions, 224 flow [2024-11-09 15:16:17,697 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=224, PETRI_PLACES=82, PETRI_TRANSITIONS=54} [2024-11-09 15:16:17,697 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 18 predicate places. [2024-11-09 15:16:17,698 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 54 transitions, 224 flow [2024-11-09 15:16:17,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.363636363636363) internal successors, (268), 11 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:17,698 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:17,698 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:17,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 15:16:17,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-09 15:16:17,899 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:17,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:17,899 INFO L85 PathProgramCache]: Analyzing trace with hash 303522530, now seen corresponding path program 1 times [2024-11-09 15:16:17,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:17,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805798880] [2024-11-09 15:16:17,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:17,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:17,961 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:17,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:17,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805798880] [2024-11-09 15:16:17,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805798880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:17,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674640513] [2024-11-09 15:16:17,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:17,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:17,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:17,964 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:16:17,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 15:16:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:18,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:16:18,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:16:18,059 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:18,059 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:16:18,111 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:18,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674640513] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:16:18,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:16:18,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-09 15:16:18,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282874584] [2024-11-09 15:16:18,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:16:18,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 15:16:18,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:18,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 15:16:18,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-09 15:16:18,128 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-09 15:16:18,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 54 transitions, 224 flow. Second operand has 10 states, 10 states have (on average 24.6) internal successors, (246), 10 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:18,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:18,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-09 15:16:18,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:19,507 INFO L124 PetriNetUnfolderBase]: 11019/16377 cut-off events. [2024-11-09 15:16:19,507 INFO L125 PetriNetUnfolderBase]: For 6398/6398 co-relation queries the response was YES. [2024-11-09 15:16:19,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37062 conditions, 16377 events. 11019/16377 cut-off events. For 6398/6398 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 106692 event pairs, 255 based on Foata normal form. 336/16628 useless extension candidates. Maximal degree in co-relation 23668. Up to 7937 conditions per place. [2024-11-09 15:16:19,609 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 75 selfloop transitions, 9 changer transitions 0/105 dead transitions. [2024-11-09 15:16:19,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 105 transitions, 521 flow [2024-11-09 15:16:19,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:16:19,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:16:19,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 303 transitions. [2024-11-09 15:16:19,611 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6183673469387755 [2024-11-09 15:16:19,611 INFO L175 Difference]: Start difference. First operand has 82 places, 54 transitions, 224 flow. Second operand 10 states and 303 transitions. [2024-11-09 15:16:19,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 105 transitions, 521 flow [2024-11-09 15:16:19,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 105 transitions, 505 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-09 15:16:19,645 INFO L231 Difference]: Finished difference. Result has 85 places, 54 transitions, 227 flow [2024-11-09 15:16:19,645 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=227, PETRI_PLACES=85, PETRI_TRANSITIONS=54} [2024-11-09 15:16:19,645 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 21 predicate places. [2024-11-09 15:16:19,645 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 54 transitions, 227 flow [2024-11-09 15:16:19,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.6) internal successors, (246), 10 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:19,646 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:19,646 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:19,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 15:16:19,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:19,847 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:19,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:19,847 INFO L85 PathProgramCache]: Analyzing trace with hash 337308279, now seen corresponding path program 1 times [2024-11-09 15:16:19,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:19,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793269052] [2024-11-09 15:16:19,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:19,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:19,962 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:16:19,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:19,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793269052] [2024-11-09 15:16:19,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793269052] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:19,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011016624] [2024-11-09 15:16:19,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:19,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:19,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:19,968 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:16:19,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 15:16:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:20,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 15:16:20,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:16:20,186 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:16:20,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:16:20,300 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:16:20,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011016624] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:16:20,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:16:20,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-11-09 15:16:20,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300693090] [2024-11-09 15:16:20,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:16:20,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 15:16:20,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:20,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 15:16:20,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2024-11-09 15:16:20,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-09 15:16:20,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 54 transitions, 227 flow. Second operand has 23 states, 23 states have (on average 24.695652173913043) internal successors, (568), 23 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:20,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:20,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-09 15:16:20,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:21,329 INFO L124 PetriNetUnfolderBase]: 5835/8475 cut-off events. [2024-11-09 15:16:21,329 INFO L125 PetriNetUnfolderBase]: For 6140/6140 co-relation queries the response was YES. [2024-11-09 15:16:21,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19479 conditions, 8475 events. 5835/8475 cut-off events. For 6140/6140 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 49250 event pairs, 255 based on Foata normal form. 320/8710 useless extension candidates. Maximal degree in co-relation 19462. Up to 2752 conditions per place. [2024-11-09 15:16:21,399 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 65 selfloop transitions, 9 changer transitions 0/92 dead transitions. [2024-11-09 15:16:21,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 92 transitions, 437 flow [2024-11-09 15:16:21,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 15:16:21,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 15:16:21,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 318 transitions. [2024-11-09 15:16:21,402 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5899814471243042 [2024-11-09 15:16:21,402 INFO L175 Difference]: Start difference. First operand has 85 places, 54 transitions, 227 flow. Second operand 11 states and 318 transitions. [2024-11-09 15:16:21,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 92 transitions, 437 flow [2024-11-09 15:16:21,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 92 transitions, 403 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-11-09 15:16:21,412 INFO L231 Difference]: Finished difference. Result has 78 places, 46 transitions, 175 flow [2024-11-09 15:16:21,412 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=175, PETRI_PLACES=78, PETRI_TRANSITIONS=46} [2024-11-09 15:16:21,413 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 14 predicate places. [2024-11-09 15:16:21,413 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 46 transitions, 175 flow [2024-11-09 15:16:21,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 24.695652173913043) internal successors, (568), 23 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:21,413 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:21,414 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:21,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 15:16:21,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:21,615 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:21,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:21,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1652814120, now seen corresponding path program 1 times [2024-11-09 15:16:21,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:21,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949208816] [2024-11-09 15:16:21,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:21,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:16:21,627 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 15:16:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:16:21,653 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 15:16:21,653 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 15:16:21,653 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-09 15:16:21,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-09 15:16:21,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-09 15:16:21,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-09 15:16:21,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-09 15:16:21,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-09 15:16:21,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-09 15:16:21,655 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:21,655 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 15:16:21,655 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-09 15:16:21,686 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 15:16:21,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 57 transitions, 194 flow [2024-11-09 15:16:21,699 INFO L124 PetriNetUnfolderBase]: 6/120 cut-off events. [2024-11-09 15:16:21,699 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-09 15:16:21,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 120 events. 6/120 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 212 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 145. Up to 12 conditions per place. [2024-11-09 15:16:21,700 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 57 transitions, 194 flow [2024-11-09 15:16:21,701 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 55 transitions, 185 flow [2024-11-09 15:16:21,703 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:16:21,703 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;@72d822, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:16:21,704 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 15:16:21,705 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:16:21,705 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-09 15:16:21,705 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:16:21,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:21,705 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-09 15:16:21,706 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:21,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:21,706 INFO L85 PathProgramCache]: Analyzing trace with hash 12715397, now seen corresponding path program 1 times [2024-11-09 15:16:21,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:21,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533726064] [2024-11-09 15:16:21,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:21,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:21,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:21,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:21,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533726064] [2024-11-09 15:16:21,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533726064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:21,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:21,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:21,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283868033] [2024-11-09 15:16:21,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:21,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:16:21,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:21,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:16:21,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:16:21,730 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 57 [2024-11-09 15:16:21,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 55 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:21,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:21,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 57 [2024-11-09 15:16:21,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:27,299 INFO L124 PetriNetUnfolderBase]: 44263/65067 cut-off events. [2024-11-09 15:16:27,299 INFO L125 PetriNetUnfolderBase]: For 19228/19228 co-relation queries the response was YES. [2024-11-09 15:16:27,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124694 conditions, 65067 events. 44263/65067 cut-off events. For 19228/19228 co-relation queries the response was YES. Maximal size of possible extension queue 2472. Compared 483146 event pairs, 33363 based on Foata normal form. 0/59616 useless extension candidates. Maximal degree in co-relation 57562. Up to 53793 conditions per place. [2024-11-09 15:16:27,884 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 32 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2024-11-09 15:16:27,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 61 transitions, 265 flow [2024-11-09 15:16:27,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:16:27,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:16:27,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-11-09 15:16:27,886 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.695906432748538 [2024-11-09 15:16:27,886 INFO L175 Difference]: Start difference. First operand has 76 places, 55 transitions, 185 flow. Second operand 3 states and 119 transitions. [2024-11-09 15:16:27,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 61 transitions, 265 flow [2024-11-09 15:16:27,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 61 transitions, 240 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:27,935 INFO L231 Difference]: Finished difference. Result has 78 places, 56 transitions, 172 flow [2024-11-09 15:16:27,935 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=78, PETRI_TRANSITIONS=56} [2024-11-09 15:16:27,935 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2024-11-09 15:16:27,935 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 56 transitions, 172 flow [2024-11-09 15:16:27,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:27,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:27,936 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:27,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-09 15:16:27,936 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:27,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:27,936 INFO L85 PathProgramCache]: Analyzing trace with hash 873102324, now seen corresponding path program 1 times [2024-11-09 15:16:27,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:27,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437584979] [2024-11-09 15:16:27,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:27,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:27,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:27,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:27,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437584979] [2024-11-09 15:16:27,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437584979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:27,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:27,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:27,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415233844] [2024-11-09 15:16:27,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:27,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:27,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:27,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:27,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:27,970 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 57 [2024-11-09 15:16:27,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 56 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:27,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:27,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 57 [2024-11-09 15:16:27,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:33,654 INFO L124 PetriNetUnfolderBase]: 50635/68773 cut-off events. [2024-11-09 15:16:33,654 INFO L125 PetriNetUnfolderBase]: For 12112/12112 co-relation queries the response was YES. [2024-11-09 15:16:34,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136134 conditions, 68773 events. 50635/68773 cut-off events. For 12112/12112 co-relation queries the response was YES. Maximal size of possible extension queue 2386. Compared 447984 event pairs, 24465 based on Foata normal form. 1364/68092 useless extension candidates. Maximal degree in co-relation 73387. Up to 46077 conditions per place. [2024-11-09 15:16:34,312 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 36 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2024-11-09 15:16:34,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 65 transitions, 270 flow [2024-11-09 15:16:34,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:34,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:34,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2024-11-09 15:16:34,314 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-11-09 15:16:34,314 INFO L175 Difference]: Start difference. First operand has 78 places, 56 transitions, 172 flow. Second operand 4 states and 144 transitions. [2024-11-09 15:16:34,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 65 transitions, 270 flow [2024-11-09 15:16:34,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 65 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:34,373 INFO L231 Difference]: Finished difference. Result has 79 places, 55 transitions, 176 flow [2024-11-09 15:16:34,373 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=79, PETRI_TRANSITIONS=55} [2024-11-09 15:16:34,373 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2024-11-09 15:16:34,374 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 55 transitions, 176 flow [2024-11-09 15:16:34,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:34,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:34,374 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:34,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-09 15:16:34,374 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:34,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:34,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1296368691, now seen corresponding path program 1 times [2024-11-09 15:16:34,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:34,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242800356] [2024-11-09 15:16:34,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:34,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:34,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:16:34,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:34,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242800356] [2024-11-09 15:16:34,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242800356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:34,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:34,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:34,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661911432] [2024-11-09 15:16:34,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:34,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:34,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:34,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:34,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:34,409 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 57 [2024-11-09 15:16:34,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 55 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:34,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:34,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 57 [2024-11-09 15:16:34,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:40,470 INFO L124 PetriNetUnfolderBase]: 50631/70065 cut-off events. [2024-11-09 15:16:40,470 INFO L125 PetriNetUnfolderBase]: For 15522/15522 co-relation queries the response was YES. [2024-11-09 15:16:40,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140143 conditions, 70065 events. 50631/70065 cut-off events. For 15522/15522 co-relation queries the response was YES. Maximal size of possible extension queue 2528. Compared 469571 event pairs, 38367 based on Foata normal form. 4/67348 useless extension candidates. Maximal degree in co-relation 64605. Up to 61521 conditions per place. [2024-11-09 15:16:41,266 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 34 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-11-09 15:16:41,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 62 transitions, 266 flow [2024-11-09 15:16:41,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:41,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:41,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2024-11-09 15:16:41,268 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2024-11-09 15:16:41,268 INFO L175 Difference]: Start difference. First operand has 79 places, 55 transitions, 176 flow. Second operand 4 states and 142 transitions. [2024-11-09 15:16:41,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 62 transitions, 266 flow [2024-11-09 15:16:41,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 62 transitions, 256 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:16:41,296 INFO L231 Difference]: Finished difference. Result has 81 places, 56 transitions, 184 flow [2024-11-09 15:16:41,296 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=81, PETRI_TRANSITIONS=56} [2024-11-09 15:16:41,297 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 5 predicate places. [2024-11-09 15:16:41,297 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 56 transitions, 184 flow [2024-11-09 15:16:41,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:41,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:41,297 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:41,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-09 15:16:41,298 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:41,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:41,298 INFO L85 PathProgramCache]: Analyzing trace with hash -225840337, now seen corresponding path program 1 times [2024-11-09 15:16:41,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:41,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185145544] [2024-11-09 15:16:41,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:41,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:41,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:41,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:41,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185145544] [2024-11-09 15:16:41,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185145544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:41,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:41,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:16:41,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981400875] [2024-11-09 15:16:41,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:41,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:41,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:41,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:41,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:41,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 57 [2024-11-09 15:16:41,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 56 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:41,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:41,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 57 [2024-11-09 15:16:41,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:49,504 INFO L124 PetriNetUnfolderBase]: 69751/93279 cut-off events. [2024-11-09 15:16:49,505 INFO L125 PetriNetUnfolderBase]: For 12808/12808 co-relation queries the response was YES. [2024-11-09 15:16:50,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186583 conditions, 93279 events. 69751/93279 cut-off events. For 12808/12808 co-relation queries the response was YES. Maximal size of possible extension queue 3091. Compared 601860 event pairs, 55643 based on Foata normal form. 1364/91916 useless extension candidates. Maximal degree in co-relation 85776. Up to 69286 conditions per place. [2024-11-09 15:16:50,411 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 51 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-11-09 15:16:50,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 78 transitions, 336 flow [2024-11-09 15:16:50,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:50,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:50,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-11-09 15:16:50,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6929824561403509 [2024-11-09 15:16:50,412 INFO L175 Difference]: Start difference. First operand has 81 places, 56 transitions, 184 flow. Second operand 4 states and 158 transitions. [2024-11-09 15:16:50,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 78 transitions, 336 flow [2024-11-09 15:16:50,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 78 transitions, 332 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:16:50,474 INFO L231 Difference]: Finished difference. Result has 84 places, 58 transitions, 202 flow [2024-11-09 15:16:50,474 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=84, PETRI_TRANSITIONS=58} [2024-11-09 15:16:50,475 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 8 predicate places. [2024-11-09 15:16:50,475 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 58 transitions, 202 flow [2024-11-09 15:16:50,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:50,475 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:50,475 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:50,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-09 15:16:50,476 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:50,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:50,476 INFO L85 PathProgramCache]: Analyzing trace with hash -2090289044, now seen corresponding path program 1 times [2024-11-09 15:16:50,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:50,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362533938] [2024-11-09 15:16:50,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:50,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:50,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:16:50,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:50,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362533938] [2024-11-09 15:16:50,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362533938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:50,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977675586] [2024-11-09 15:16:50,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:50,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:50,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:50,516 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:16:50,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 15:16:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:50,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:16:50,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:16:50,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:16:50,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:16:50,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:16:50,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977675586] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:16:50,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:16:50,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 15:16:50,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611651945] [2024-11-09 15:16:50,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:16:50,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 15:16:50,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:50,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 15:16:50,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-09 15:16:50,686 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 57 [2024-11-09 15:16:50,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 58 transitions, 202 flow. Second operand has 11 states, 11 states have (on average 28.363636363636363) internal successors, (312), 11 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:50,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:50,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 57 [2024-11-09 15:16:50,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand