./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-theta/exponential-nondet.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-nondet.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 f87ddde6d61a5d434f69c49dc65eaf95f54327ebb0ef5acca382e4d4744605ae --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:15:59,818 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:15:59,875 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:15:59,880 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:15:59,880 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:15:59,904 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:15:59,904 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:15:59,905 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:15:59,905 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:15:59,906 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:15:59,906 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:15:59,907 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:15:59,907 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:15:59,908 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:15:59,909 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:15:59,909 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:15:59,909 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:15:59,909 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:15:59,910 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:15:59,910 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:15:59,910 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:15:59,910 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:15:59,911 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:15:59,911 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:15:59,911 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:15:59,911 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:15:59,911 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:15:59,912 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:15:59,912 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:15:59,912 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:15:59,912 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:15:59,912 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:15:59,912 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:15:59,913 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:15:59,913 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:15:59,913 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:15:59,913 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:15:59,913 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:15:59,913 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:15:59,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:15:59,914 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:15:59,920 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:15:59,920 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:15:59,920 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:15:59,920 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f87ddde6d61a5d434f69c49dc65eaf95f54327ebb0ef5acca382e4d4744605ae [2024-11-09 15:16:00,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:16:00,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:16:00,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:16:00,130 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:16:00,134 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:16:00,135 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/exponential-nondet.i [2024-11-09 15:16:01,308 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:16:01,526 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:16:01,529 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/exponential-nondet.i [2024-11-09 15:16:01,546 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f78ea72e1/8e967a1a74b54e348314a7dd602fe4a0/FLAGa0224c4d6 [2024-11-09 15:16:01,559 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f78ea72e1/8e967a1a74b54e348314a7dd602fe4a0 [2024-11-09 15:16:01,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:16:01,562 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:16:01,564 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:16:01,564 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:16:01,569 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:16:01,569 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:16:01" (1/1) ... [2024-11-09 15:16:01,570 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4197edd1 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 15:16:01,570 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:16:01" (1/1) ... [2024-11-09 15:16:01,610 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:16:01,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:16:01,935 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:16:01,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:16:02,009 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:16:02,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:16:02 WrapperNode [2024-11-09 15:16:02,010 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:16:02,010 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:16:02,010 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:16:02,010 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:16:02,015 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 15:16:02,028 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 15:16:02,044 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2024-11-09 15:16:02,044 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:16:02,045 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:16:02,045 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:16:02,045 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:16:02,052 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 15:16:02,052 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 15:16:02,054 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 15:16:02,062 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 15:16:02,063 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 15:16:02,063 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 15:16:02,069 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 15:16:02,071 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 15:16:02,072 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 15:16:02,073 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 15:16:02,074 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:16:02,075 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:16:02,075 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:16:02,075 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:16:02,076 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 15:16:02,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:16:02,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:02,107 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 15:16:02,109 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 15:16:02,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:16:02,149 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-09 15:16:02,149 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-09 15:16:02,149 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-09 15:16:02,149 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-09 15:16:02,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:16:02,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:16:02,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:16:02,150 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 15:16:02,269 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:16:02,271 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:16:02,442 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:16:02,443 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:16:02,534 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:16:02,534 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 15:16:02,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:16:02 BoogieIcfgContainer [2024-11-09 15:16:02,535 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:16:02,536 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:16:02,536 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:16:02,540 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:16:02,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:16:01" (1/3) ... [2024-11-09 15:16:02,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4938059b 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 15:16:02,541 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 15:16:02,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4938059b 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 15:16:02,541 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 15:16:02,542 INFO L112 eAbstractionObserver]: Analyzing ICFG exponential-nondet.i [2024-11-09 15:16:02,555 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:16:02,556 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-09 15:16:02,556 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:16:02,589 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 15:16:02,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 25 transitions, 58 flow [2024-11-09 15:16:02,640 INFO L124 PetriNetUnfolderBase]: 2/32 cut-off events. [2024-11-09 15:16:02,640 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:16:02,642 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 54 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 15:16:02,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 25 transitions, 58 flow [2024-11-09 15:16:02,645 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 23 transitions, 53 flow [2024-11-09 15:16:02,656 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:16:02,662 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;@2be0727e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:16:02,663 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 15:16:02,668 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:16:02,670 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-09 15:16:02,673 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:16:02,674 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:02,674 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-09 15:16:02,675 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 15:16:02,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:02,679 INFO L85 PathProgramCache]: Analyzing trace with hash 7358981, now seen corresponding path program 1 times [2024-11-09 15:16:02,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:02,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427754302] [2024-11-09 15:16:02,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:02,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:02,912 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 15:16:02,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:02,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427754302] [2024-11-09 15:16:02,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427754302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:02,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:02,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:16:02,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056504040] [2024-11-09 15:16:02,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:02,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:02,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:02,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:02,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:02,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 25 [2024-11-09 15:16:03,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 15:16:03,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:03,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 25 [2024-11-09 15:16:03,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:03,071 INFO L124 PetriNetUnfolderBase]: 44/128 cut-off events. [2024-11-09 15:16:03,074 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:16:03,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 128 events. 44/128 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 559 event pairs, 31 based on Foata normal form. 5/115 useless extension candidates. Maximal degree in co-relation 202. Up to 79 conditions per place. [2024-11-09 15:16:03,076 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 17 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-11-09 15:16:03,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 105 flow [2024-11-09 15:16:03,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:03,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:03,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-11-09 15:16:03,085 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-11-09 15:16:03,086 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 53 flow. Second operand 4 states and 62 transitions. [2024-11-09 15:16:03,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 105 flow [2024-11-09 15:16:03,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 104 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:03,089 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 74 flow [2024-11-09 15:16:03,091 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2024-11-09 15:16:03,093 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2024-11-09 15:16:03,093 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 74 flow [2024-11-09 15:16:03,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 15:16:03,093 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:03,093 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:03,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:16:03,094 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 15:16:03,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:03,094 INFO L85 PathProgramCache]: Analyzing trace with hash 186003666, now seen corresponding path program 1 times [2024-11-09 15:16:03,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:03,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525865000] [2024-11-09 15:16:03,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:03,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:03,156 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 15:16:03,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:03,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525865000] [2024-11-09 15:16:03,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525865000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:03,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:03,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:03,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181166465] [2024-11-09 15:16:03,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:03,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:03,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:03,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:03,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:03,165 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 25 [2024-11-09 15:16:03,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 74 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 15:16:03,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:03,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 25 [2024-11-09 15:16:03,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:03,222 INFO L124 PetriNetUnfolderBase]: 40/118 cut-off events. [2024-11-09 15:16:03,223 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-09 15:16:03,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 118 events. 40/118 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 475 event pairs, 17 based on Foata normal form. 4/116 useless extension candidates. Maximal degree in co-relation 220. Up to 70 conditions per place. [2024-11-09 15:16:03,224 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 14 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2024-11-09 15:16:03,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 110 flow [2024-11-09 15:16:03,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:03,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:03,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2024-11-09 15:16:03,225 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-11-09 15:16:03,226 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 74 flow. Second operand 4 states and 56 transitions. [2024-11-09 15:16:03,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 110 flow [2024-11-09 15:16:03,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:03,227 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 76 flow [2024-11-09 15:16:03,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2024-11-09 15:16:03,228 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 5 predicate places. [2024-11-09 15:16:03,228 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 76 flow [2024-11-09 15:16:03,229 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 15:16:03,229 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:03,229 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-09 15:16:03,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 15:16:03,229 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:03,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:03,230 INFO L85 PathProgramCache]: Analyzing trace with hash 188303080, now seen corresponding path program 1 times [2024-11-09 15:16:03,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:03,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771716386] [2024-11-09 15:16:03,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:03,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:03,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:03,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:03,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771716386] [2024-11-09 15:16:03,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771716386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:03,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:03,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:16:03,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723254191] [2024-11-09 15:16:03,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:03,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:03,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:03,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:03,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:03,299 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 25 [2024-11-09 15:16:03,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 15:16:03,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:03,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 25 [2024-11-09 15:16:03,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:03,350 INFO L124 PetriNetUnfolderBase]: 35/108 cut-off events. [2024-11-09 15:16:03,351 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-09 15:16:03,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 108 events. 35/108 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 426 event pairs, 7 based on Foata normal form. 1/105 useless extension candidates. Maximal degree in co-relation 214. Up to 53 conditions per place. [2024-11-09 15:16:03,353 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 15 selfloop transitions, 2 changer transitions 1/28 dead transitions. [2024-11-09 15:16:03,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 122 flow [2024-11-09 15:16:03,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:03,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:03,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-11-09 15:16:03,358 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-11-09 15:16:03,358 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 76 flow. Second operand 4 states and 65 transitions. [2024-11-09 15:16:03,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 122 flow [2024-11-09 15:16:03,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 116 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:16:03,359 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 80 flow [2024-11-09 15:16:03,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2024-11-09 15:16:03,360 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 7 predicate places. [2024-11-09 15:16:03,360 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 80 flow [2024-11-09 15:16:03,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 15:16:03,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:03,360 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:03,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 15:16:03,361 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:03,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:03,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1471146599, now seen corresponding path program 1 times [2024-11-09 15:16:03,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:03,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260251286] [2024-11-09 15:16:03,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:03,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:03,403 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 15:16:03,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:03,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260251286] [2024-11-09 15:16:03,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260251286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:03,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:03,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:03,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039076589] [2024-11-09 15:16:03,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:03,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:03,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:03,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:03,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:03,410 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 25 [2024-11-09 15:16:03,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 80 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 15:16:03,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:03,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 25 [2024-11-09 15:16:03,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:03,451 INFO L124 PetriNetUnfolderBase]: 35/101 cut-off events. [2024-11-09 15:16:03,452 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-09 15:16:03,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 101 events. 35/101 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 361 event pairs, 3 based on Foata normal form. 4/103 useless extension candidates. Maximal degree in co-relation 216. Up to 53 conditions per place. [2024-11-09 15:16:03,453 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 16 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-11-09 15:16:03,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 126 flow [2024-11-09 15:16:03,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:03,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:03,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-11-09 15:16:03,456 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-11-09 15:16:03,456 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 80 flow. Second operand 4 states and 58 transitions. [2024-11-09 15:16:03,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 126 flow [2024-11-09 15:16:03,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 120 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-09 15:16:03,457 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 78 flow [2024-11-09 15:16:03,457 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2024-11-09 15:16:03,458 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 5 predicate places. [2024-11-09 15:16:03,458 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 78 flow [2024-11-09 15:16:03,458 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 15:16:03,458 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:03,458 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:03,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 15:16:03,458 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:03,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:03,459 INFO L85 PathProgramCache]: Analyzing trace with hash 727648952, now seen corresponding path program 1 times [2024-11-09 15:16:03,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:03,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671959208] [2024-11-09 15:16:03,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:03,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:16:03,475 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 15:16:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:16:03,502 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 15:16:03,502 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 15:16:03,503 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-09 15:16:03,504 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-09 15:16:03,504 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-09 15:16:03,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-09 15:16:03,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-09 15:16:03,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-09 15:16:03,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:16:03,506 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-09 15:16:03,508 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 15:16:03,509 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 15:16:03,528 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 15:16:03,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 33 transitions, 86 flow [2024-11-09 15:16:03,544 INFO L124 PetriNetUnfolderBase]: 3/54 cut-off events. [2024-11-09 15:16:03,544 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 15:16:03,544 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 87 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 15:16:03,544 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 33 transitions, 86 flow [2024-11-09 15:16:03,545 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 31 transitions, 80 flow [2024-11-09 15:16:03,547 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:16:03,548 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;@2be0727e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:16:03,548 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 15:16:03,549 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:16:03,550 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-09 15:16:03,550 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:16:03,550 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:03,550 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-09 15:16:03,550 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 15:16:03,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:03,552 INFO L85 PathProgramCache]: Analyzing trace with hash 8374853, now seen corresponding path program 1 times [2024-11-09 15:16:03,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:03,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934854413] [2024-11-09 15:16:03,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:03,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:03,597 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 15:16:03,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:03,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934854413] [2024-11-09 15:16:03,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934854413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:03,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:03,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:16:03,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138971354] [2024-11-09 15:16:03,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:03,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:03,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:03,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:03,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:03,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2024-11-09 15:16:03,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 15:16:03,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:03,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2024-11-09 15:16:03,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:03,767 INFO L124 PetriNetUnfolderBase]: 392/768 cut-off events. [2024-11-09 15:16:03,767 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-09 15:16:03,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1436 conditions, 768 events. 392/768 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4454 event pairs, 299 based on Foata normal form. 21/707 useless extension candidates. Maximal degree in co-relation 592. Up to 507 conditions per place. [2024-11-09 15:16:03,789 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 25 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2024-11-09 15:16:03,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 156 flow [2024-11-09 15:16:03,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:03,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:03,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-11-09 15:16:03,794 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2024-11-09 15:16:03,794 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 80 flow. Second operand 4 states and 86 transitions. [2024-11-09 15:16:03,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 156 flow [2024-11-09 15:16:03,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 155 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:03,795 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 101 flow [2024-11-09 15:16:03,795 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=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-11-09 15:16:03,796 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2024-11-09 15:16:03,796 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 101 flow [2024-11-09 15:16:03,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 15:16:03,796 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:03,796 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:03,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 15:16:03,797 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 15:16:03,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:03,797 INFO L85 PathProgramCache]: Analyzing trace with hash 390655968, now seen corresponding path program 1 times [2024-11-09 15:16:03,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:03,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432159866] [2024-11-09 15:16:03,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:03,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:03,842 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 15:16:03,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:03,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432159866] [2024-11-09 15:16:03,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432159866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:03,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:03,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:03,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944750658] [2024-11-09 15:16:03,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:03,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:03,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:03,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:03,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:03,851 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2024-11-09 15:16:03,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 101 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 15:16:03,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:03,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2024-11-09 15:16:03,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:03,925 INFO L124 PetriNetUnfolderBase]: 356/698 cut-off events. [2024-11-09 15:16:03,926 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2024-11-09 15:16:03,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1499 conditions, 698 events. 356/698 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3947 event pairs, 165 based on Foata normal form. 20/688 useless extension candidates. Maximal degree in co-relation 855. Up to 450 conditions per place. [2024-11-09 15:16:03,931 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 20 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2024-11-09 15:16:03,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 36 transitions, 153 flow [2024-11-09 15:16:03,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:03,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:03,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-11-09 15:16:03,934 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-11-09 15:16:03,934 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 101 flow. Second operand 4 states and 78 transitions. [2024-11-09 15:16:03,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 36 transitions, 153 flow [2024-11-09 15:16:03,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 36 transitions, 151 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:03,938 INFO L231 Difference]: Finished difference. Result has 45 places, 32 transitions, 103 flow [2024-11-09 15:16:03,939 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=45, PETRI_TRANSITIONS=32} [2024-11-09 15:16:03,939 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2024-11-09 15:16:03,940 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 32 transitions, 103 flow [2024-11-09 15:16:03,940 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 15:16:03,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:03,941 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-09 15:16:03,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 15:16:03,941 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:03,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:03,941 INFO L85 PathProgramCache]: Analyzing trace with hash 387407529, now seen corresponding path program 1 times [2024-11-09 15:16:03,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:03,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684211750] [2024-11-09 15:16:03,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:03,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:03,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:03,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:03,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684211750] [2024-11-09 15:16:03,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684211750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:03,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:03,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:16:03,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447487114] [2024-11-09 15:16:03,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:03,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:03,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:03,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:03,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:03,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 33 [2024-11-09 15:16:03,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 32 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 15:16:03,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:03,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 33 [2024-11-09 15:16:03,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:04,066 INFO L124 PetriNetUnfolderBase]: 319/668 cut-off events. [2024-11-09 15:16:04,067 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-11-09 15:16:04,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1422 conditions, 668 events. 319/668 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3734 event pairs, 131 based on Foata normal form. 1/649 useless extension candidates. Maximal degree in co-relation 818. Up to 481 conditions per place. [2024-11-09 15:16:04,070 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 22 selfloop transitions, 2 changer transitions 1/39 dead transitions. [2024-11-09 15:16:04,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 39 transitions, 173 flow [2024-11-09 15:16:04,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:04,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:04,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-11-09 15:16:04,072 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-09 15:16:04,072 INFO L175 Difference]: Start difference. First operand has 45 places, 32 transitions, 103 flow. Second operand 4 states and 88 transitions. [2024-11-09 15:16:04,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 39 transitions, 173 flow [2024-11-09 15:16:04,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 163 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:16:04,075 INFO L231 Difference]: Finished difference. Result has 47 places, 33 transitions, 111 flow [2024-11-09 15:16:04,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=47, PETRI_TRANSITIONS=33} [2024-11-09 15:16:04,076 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2024-11-09 15:16:04,077 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 33 transitions, 111 flow [2024-11-09 15:16:04,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 15:16:04,077 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:04,077 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:04,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 15:16:04,078 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:04,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:04,078 INFO L85 PathProgramCache]: Analyzing trace with hash -774566598, now seen corresponding path program 1 times [2024-11-09 15:16:04,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:04,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064397008] [2024-11-09 15:16:04,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:04,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:04,106 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 15:16:04,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:04,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064397008] [2024-11-09 15:16:04,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064397008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:04,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:04,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:04,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507010353] [2024-11-09 15:16:04,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:04,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:04,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:04,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:04,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:04,114 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2024-11-09 15:16:04,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 33 transitions, 111 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 15:16:04,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:04,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2024-11-09 15:16:04,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:04,182 INFO L124 PetriNetUnfolderBase]: 351/695 cut-off events. [2024-11-09 15:16:04,182 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2024-11-09 15:16:04,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 695 events. 351/695 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3839 event pairs, 143 based on Foata normal form. 4/681 useless extension candidates. Maximal degree in co-relation 895. Up to 529 conditions per place. [2024-11-09 15:16:04,208 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 24 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2024-11-09 15:16:04,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 40 transitions, 179 flow [2024-11-09 15:16:04,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:04,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:04,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2024-11-09 15:16:04,210 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2024-11-09 15:16:04,210 INFO L175 Difference]: Start difference. First operand has 47 places, 33 transitions, 111 flow. Second operand 4 states and 82 transitions. [2024-11-09 15:16:04,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 40 transitions, 179 flow [2024-11-09 15:16:04,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 175 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-09 15:16:04,213 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 123 flow [2024-11-09 15:16:04,213 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2024-11-09 15:16:04,215 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2024-11-09 15:16:04,215 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 123 flow [2024-11-09 15:16:04,216 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 15:16:04,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:04,216 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:04,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 15:16:04,216 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 15:16:04,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:04,217 INFO L85 PathProgramCache]: Analyzing trace with hash -306633901, now seen corresponding path program 1 times [2024-11-09 15:16:04,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:04,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490163226] [2024-11-09 15:16:04,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:04,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:04,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:04,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490163226] [2024-11-09 15:16:04,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490163226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:04,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973330969] [2024-11-09 15:16:04,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:04,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:04,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:04,268 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 15:16:04,268 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 15:16:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:04,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:16:04,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:16:04,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:04,371 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:16:04,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973330969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:04,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:16:04,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-09 15:16:04,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395630971] [2024-11-09 15:16:04,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:04,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:16:04,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:04,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:16:04,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:16:04,381 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2024-11-09 15:16:04,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 123 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 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 15:16:04,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:04,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2024-11-09 15:16:04,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:04,486 INFO L124 PetriNetUnfolderBase]: 355/679 cut-off events. [2024-11-09 15:16:04,487 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2024-11-09 15:16:04,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1519 conditions, 679 events. 355/679 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3749 event pairs, 155 based on Foata normal form. 20/659 useless extension candidates. Maximal degree in co-relation 860. Up to 258 conditions per place. [2024-11-09 15:16:04,491 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 32 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2024-11-09 15:16:04,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 225 flow [2024-11-09 15:16:04,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:16:04,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:16:04,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-11-09 15:16:04,492 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-11-09 15:16:04,492 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 123 flow. Second operand 6 states and 120 transitions. [2024-11-09 15:16:04,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 225 flow [2024-11-09 15:16:04,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 221 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:16:04,493 INFO L231 Difference]: Finished difference. Result has 51 places, 33 transitions, 125 flow [2024-11-09 15:16:04,493 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=125, PETRI_PLACES=51, PETRI_TRANSITIONS=33} [2024-11-09 15:16:04,494 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 11 predicate places. [2024-11-09 15:16:04,494 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 33 transitions, 125 flow [2024-11-09 15:16:04,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 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 15:16:04,495 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:04,495 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:04,508 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 15:16:04,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 15:16:04,699 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 15:16:04,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:04,699 INFO L85 PathProgramCache]: Analyzing trace with hash -786355506, now seen corresponding path program 1 times [2024-11-09 15:16:04,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:04,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570399645] [2024-11-09 15:16:04,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:04,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:04,739 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 15:16:04,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:04,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570399645] [2024-11-09 15:16:04,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570399645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:04,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438533082] [2024-11-09 15:16:04,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:04,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:04,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:04,742 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 15:16:04,743 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 15:16:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:04,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:16:04,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:16:04,816 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 15:16:04,816 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:16:04,857 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 15:16:04,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438533082] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:16:04,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:16:04,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-09 15:16:04,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980623768] [2024-11-09 15:16:04,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:16:04,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 15:16:04,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:04,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 15:16:04,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-09 15:16:04,868 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2024-11-09 15:16:04,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 33 transitions, 125 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 15:16:04,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:04,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2024-11-09 15:16:04,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:04,961 INFO L124 PetriNetUnfolderBase]: 319/625 cut-off events. [2024-11-09 15:16:04,961 INFO L125 PetriNetUnfolderBase]: For 212/212 co-relation queries the response was YES. [2024-11-09 15:16:04,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1488 conditions, 625 events. 319/625 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3320 event pairs, 15 based on Foata normal form. 16/631 useless extension candidates. Maximal degree in co-relation 841. Up to 304 conditions per place. [2024-11-09 15:16:04,965 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 35 selfloop transitions, 5 changer transitions 0/52 dead transitions. [2024-11-09 15:16:04,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 52 transitions, 265 flow [2024-11-09 15:16:04,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:16:04,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:16:04,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-11-09 15:16:04,969 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5844155844155844 [2024-11-09 15:16:04,969 INFO L175 Difference]: Start difference. First operand has 51 places, 33 transitions, 125 flow. Second operand 7 states and 135 transitions. [2024-11-09 15:16:04,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 52 transitions, 265 flow [2024-11-09 15:16:04,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 235 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-09 15:16:04,971 INFO L231 Difference]: Finished difference. Result has 50 places, 32 transitions, 115 flow [2024-11-09 15:16:04,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=115, PETRI_PLACES=50, PETRI_TRANSITIONS=32} [2024-11-09 15:16:04,971 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 10 predicate places. [2024-11-09 15:16:04,971 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 32 transitions, 115 flow [2024-11-09 15:16:04,972 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 15:16:04,972 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:04,972 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:04,985 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 15:16:05,172 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,SelfDestructingSolverStorable10 [2024-11-09 15:16:05,173 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:05,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:05,173 INFO L85 PathProgramCache]: Analyzing trace with hash -915716072, now seen corresponding path program 1 times [2024-11-09 15:16:05,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:05,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784757381] [2024-11-09 15:16:05,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:05,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:05,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:05,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:05,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784757381] [2024-11-09 15:16:05,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784757381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:05,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212222304] [2024-11-09 15:16:05,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:05,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:05,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:05,243 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 15:16:05,244 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 15:16:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:05,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:16:05,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:16:05,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:05,309 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:16:05,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:05,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212222304] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:16:05,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:16:05,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 15:16:05,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574526271] [2024-11-09 15:16:05,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:16:05,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:16:05,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:05,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:16:05,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:16:05,348 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2024-11-09 15:16:05,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 32 transitions, 115 flow. Second operand has 12 states, 12 states have (on average 15.666666666666666) internal successors, (188), 12 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:05,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:05,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2024-11-09 15:16:05,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:05,512 INFO L124 PetriNetUnfolderBase]: 571/1059 cut-off events. [2024-11-09 15:16:05,513 INFO L125 PetriNetUnfolderBase]: For 460/460 co-relation queries the response was YES. [2024-11-09 15:16:05,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2329 conditions, 1059 events. 571/1059 cut-off events. For 460/460 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5944 event pairs, 263 based on Foata normal form. 60/1099 useless extension candidates. Maximal degree in co-relation 994. Up to 446 conditions per place. [2024-11-09 15:16:05,519 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 50 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2024-11-09 15:16:05,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 70 transitions, 321 flow [2024-11-09 15:16:05,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:16:05,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:16:05,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-11-09 15:16:05,521 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-11-09 15:16:05,521 INFO L175 Difference]: Start difference. First operand has 50 places, 32 transitions, 115 flow. Second operand 10 states and 200 transitions. [2024-11-09 15:16:05,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 70 transitions, 321 flow [2024-11-09 15:16:05,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 70 transitions, 310 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-09 15:16:05,523 INFO L231 Difference]: Finished difference. Result has 58 places, 38 transitions, 162 flow [2024-11-09 15:16:05,523 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=162, PETRI_PLACES=58, PETRI_TRANSITIONS=38} [2024-11-09 15:16:05,524 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 18 predicate places. [2024-11-09 15:16:05,524 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 38 transitions, 162 flow [2024-11-09 15:16:05,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.666666666666666) internal successors, (188), 12 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:05,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:05,524 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:05,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 15:16:05,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:05,725 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 15:16:05,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:05,726 INFO L85 PathProgramCache]: Analyzing trace with hash 226611589, now seen corresponding path program 1 times [2024-11-09 15:16:05,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:05,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573762822] [2024-11-09 15:16:05,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:05,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:16:05,735 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 15:16:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:16:05,741 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 15:16:05,741 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 15:16:05,741 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-09 15:16:05,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-09 15:16:05,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-09 15:16:05,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-09 15:16:05,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-09 15:16:05,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-09 15:16:05,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 15:16:05,742 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:05,743 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 15:16:05,743 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 15:16:05,757 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 15:16:05,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 41 transitions, 118 flow [2024-11-09 15:16:05,762 INFO L124 PetriNetUnfolderBase]: 4/76 cut-off events. [2024-11-09 15:16:05,762 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-09 15:16:05,762 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 127 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 15:16:05,762 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 41 transitions, 118 flow [2024-11-09 15:16:05,763 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 111 flow [2024-11-09 15:16:05,763 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:16:05,764 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;@2be0727e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:16:05,764 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 15:16:05,765 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:16:05,765 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-09 15:16:05,765 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:16:05,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:05,765 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-09 15:16:05,765 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 15:16:05,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:05,765 INFO L85 PathProgramCache]: Analyzing trace with hash 9636997, now seen corresponding path program 1 times [2024-11-09 15:16:05,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:05,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815690445] [2024-11-09 15:16:05,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:05,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:05,788 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 15:16:05,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:05,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815690445] [2024-11-09 15:16:05,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815690445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:05,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:05,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:16:05,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133497893] [2024-11-09 15:16:05,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:05,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:05,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:05,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:05,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:05,794 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-09 15:16:05,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:05,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:05,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-09 15:16:05,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:06,050 INFO L124 PetriNetUnfolderBase]: 2488/4032 cut-off events. [2024-11-09 15:16:06,050 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2024-11-09 15:16:06,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7694 conditions, 4032 events. 2488/4032 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 25550 event pairs, 1947 based on Foata normal form. 85/3780 useless extension candidates. Maximal degree in co-relation 3368. Up to 2795 conditions per place. [2024-11-09 15:16:06,070 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 33 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2024-11-09 15:16:06,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 211 flow [2024-11-09 15:16:06,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:06,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:06,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-11-09 15:16:06,071 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6707317073170732 [2024-11-09 15:16:06,071 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 111 flow. Second operand 4 states and 110 transitions. [2024-11-09 15:16:06,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 211 flow [2024-11-09 15:16:06,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 53 transitions, 206 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:06,073 INFO L231 Difference]: Finished difference. Result has 56 places, 41 transitions, 128 flow [2024-11-09 15:16:06,073 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=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=56, PETRI_TRANSITIONS=41} [2024-11-09 15:16:06,074 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-11-09 15:16:06,074 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 41 transitions, 128 flow [2024-11-09 15:16:06,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:06,074 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:06,074 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:06,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 15:16:06,074 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 15:16:06,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:06,075 INFO L85 PathProgramCache]: Analyzing trace with hash -657929226, now seen corresponding path program 1 times [2024-11-09 15:16:06,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:06,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686736980] [2024-11-09 15:16:06,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:06,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:06,093 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 15:16:06,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:06,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686736980] [2024-11-09 15:16:06,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686736980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:06,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:06,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:06,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588090258] [2024-11-09 15:16:06,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:06,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:06,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:06,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:06,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:06,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-09 15:16:06,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 41 transitions, 128 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 15:16:06,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:06,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-09 15:16:06,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:06,313 INFO L124 PetriNetUnfolderBase]: 2260/3658 cut-off events. [2024-11-09 15:16:06,314 INFO L125 PetriNetUnfolderBase]: For 475/475 co-relation queries the response was YES. [2024-11-09 15:16:06,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7725 conditions, 3658 events. 2260/3658 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 22608 event pairs, 1237 based on Foata normal form. 84/3617 useless extension candidates. Maximal degree in co-relation 4647. Up to 2482 conditions per place. [2024-11-09 15:16:06,336 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 26 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-11-09 15:16:06,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 46 transitions, 196 flow [2024-11-09 15:16:06,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:06,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:06,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-11-09 15:16:06,338 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2024-11-09 15:16:06,338 INFO L175 Difference]: Start difference. First operand has 56 places, 41 transitions, 128 flow. Second operand 4 states and 100 transitions. [2024-11-09 15:16:06,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 46 transitions, 196 flow [2024-11-09 15:16:06,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 46 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:06,346 INFO L231 Difference]: Finished difference. Result has 57 places, 40 transitions, 130 flow [2024-11-09 15:16:06,346 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=57, PETRI_TRANSITIONS=40} [2024-11-09 15:16:06,347 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-11-09 15:16:06,347 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 40 transitions, 130 flow [2024-11-09 15:16:06,347 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 15:16:06,347 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:06,347 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-09 15:16:06,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 15:16:06,348 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:06,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:06,348 INFO L85 PathProgramCache]: Analyzing trace with hash -666725518, now seen corresponding path program 1 times [2024-11-09 15:16:06,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:06,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601292709] [2024-11-09 15:16:06,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:06,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:06,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:06,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:06,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601292709] [2024-11-09 15:16:06,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601292709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:06,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:06,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:16:06,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301025062] [2024-11-09 15:16:06,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:06,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:06,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:06,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:06,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:06,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2024-11-09 15:16:06,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 40 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 15:16:06,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:06,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2024-11-09 15:16:06,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:06,611 INFO L124 PetriNetUnfolderBase]: 2031/3484 cut-off events. [2024-11-09 15:16:06,611 INFO L125 PetriNetUnfolderBase]: For 514/514 co-relation queries the response was YES. [2024-11-09 15:16:06,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7312 conditions, 3484 events. 2031/3484 cut-off events. For 514/514 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 22342 event pairs, 1203 based on Foata normal form. 1/3402 useless extension candidates. Maximal degree in co-relation 4338. Up to 2769 conditions per place. [2024-11-09 15:16:06,635 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 26 selfloop transitions, 2 changer transitions 1/47 dead transitions. [2024-11-09 15:16:06,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 47 transitions, 208 flow [2024-11-09 15:16:06,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:06,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:06,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-11-09 15:16:06,637 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6585365853658537 [2024-11-09 15:16:06,637 INFO L175 Difference]: Start difference. First operand has 57 places, 40 transitions, 130 flow. Second operand 4 states and 108 transitions. [2024-11-09 15:16:06,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 47 transitions, 208 flow [2024-11-09 15:16:06,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 47 transitions, 198 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:16:06,641 INFO L231 Difference]: Finished difference. Result has 59 places, 41 transitions, 138 flow [2024-11-09 15:16:06,642 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=59, PETRI_TRANSITIONS=41} [2024-11-09 15:16:06,643 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-11-09 15:16:06,643 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 41 transitions, 138 flow [2024-11-09 15:16:06,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 15:16:06,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:06,643 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:06,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 15:16:06,643 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:06,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:06,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1079030797, now seen corresponding path program 1 times [2024-11-09 15:16:06,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:06,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933928308] [2024-11-09 15:16:06,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:06,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:06,669 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 15:16:06,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:06,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933928308] [2024-11-09 15:16:06,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933928308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:06,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:06,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:06,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531646749] [2024-11-09 15:16:06,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:06,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:06,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:06,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:06,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:06,676 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-09 15:16:06,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 41 transitions, 138 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 15:16:06,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:06,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-09 15:16:06,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:06,915 INFO L124 PetriNetUnfolderBase]: 2255/3701 cut-off events. [2024-11-09 15:16:06,915 INFO L125 PetriNetUnfolderBase]: For 556/556 co-relation queries the response was YES. [2024-11-09 15:16:06,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7921 conditions, 3701 events. 2255/3701 cut-off events. For 556/556 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 22987 event pairs, 1343 based on Foata normal form. 4/3624 useless extension candidates. Maximal degree in co-relation 4861. Up to 3073 conditions per place. [2024-11-09 15:16:06,935 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 28 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2024-11-09 15:16:06,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 48 transitions, 214 flow [2024-11-09 15:16:06,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:06,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:06,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-09 15:16:06,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6219512195121951 [2024-11-09 15:16:06,936 INFO L175 Difference]: Start difference. First operand has 59 places, 41 transitions, 138 flow. Second operand 4 states and 102 transitions. [2024-11-09 15:16:06,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 48 transitions, 214 flow [2024-11-09 15:16:06,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 48 transitions, 210 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-09 15:16:06,941 INFO L231 Difference]: Finished difference. Result has 61 places, 42 transitions, 150 flow [2024-11-09 15:16:06,941 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=61, PETRI_TRANSITIONS=42} [2024-11-09 15:16:06,942 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-11-09 15:16:06,942 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 42 transitions, 150 flow [2024-11-09 15:16:06,942 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 15:16:06,942 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:06,942 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:06,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 15:16:06,943 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 15:16:06,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:06,943 INFO L85 PathProgramCache]: Analyzing trace with hash -2140219578, now seen corresponding path program 1 times [2024-11-09 15:16:06,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:06,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847667256] [2024-11-09 15:16:06,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:06,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:06,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:06,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:06,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847667256] [2024-11-09 15:16:06,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847667256] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:06,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810291458] [2024-11-09 15:16:06,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:06,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:06,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:07,000 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 15:16:07,001 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 15:16:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:07,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:16:07,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:16:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:07,077 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:16:07,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810291458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:07,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:16:07,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-09 15:16:07,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901921009] [2024-11-09 15:16:07,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:07,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:16:07,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:07,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:16:07,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:16:07,085 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-09 15:16:07,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 42 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:07,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:07,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-09 15:16:07,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:07,364 INFO L124 PetriNetUnfolderBase]: 2259/3623 cut-off events. [2024-11-09 15:16:07,364 INFO L125 PetriNetUnfolderBase]: For 528/528 co-relation queries the response was YES. [2024-11-09 15:16:07,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7857 conditions, 3623 events. 2259/3623 cut-off events. For 528/528 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 22159 event pairs, 1035 based on Foata normal form. 84/3540 useless extension candidates. Maximal degree in co-relation 4508. Up to 1458 conditions per place. [2024-11-09 15:16:07,377 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 44 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2024-11-09 15:16:07,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 65 transitions, 292 flow [2024-11-09 15:16:07,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:16:07,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:16:07,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-11-09 15:16:07,378 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-11-09 15:16:07,378 INFO L175 Difference]: Start difference. First operand has 61 places, 42 transitions, 150 flow. Second operand 6 states and 156 transitions. [2024-11-09 15:16:07,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 65 transitions, 292 flow [2024-11-09 15:16:07,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 65 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:16:07,382 INFO L231 Difference]: Finished difference. Result has 63 places, 41 transitions, 152 flow [2024-11-09 15:16:07,384 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=152, PETRI_PLACES=63, PETRI_TRANSITIONS=41} [2024-11-09 15:16:07,384 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2024-11-09 15:16:07,384 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 41 transitions, 152 flow [2024-11-09 15:16:07,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:16:07,385 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:07,385 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:07,397 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 15:16:07,585 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,SelfDestructingSolverStorable17 [2024-11-09 15:16:07,585 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 15:16:07,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:07,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1620953161, now seen corresponding path program 1 times [2024-11-09 15:16:07,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:07,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72239174] [2024-11-09 15:16:07,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:07,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:07,620 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 15:16:07,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:07,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72239174] [2024-11-09 15:16:07,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72239174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:07,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249531386] [2024-11-09 15:16:07,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:07,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:07,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:07,622 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 15:16:07,623 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 15:16:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:07,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:16:07,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:16:07,687 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 15:16:07,687 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:16:07,719 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 15:16:07,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249531386] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:16:07,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:16:07,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-09 15:16:07,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459739276] [2024-11-09 15:16:07,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:16:07,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 15:16:07,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:07,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 15:16:07,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-09 15:16:07,728 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-09 15:16:07,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 41 transitions, 152 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 15:16:07,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:07,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-09 15:16:07,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:07,949 INFO L124 PetriNetUnfolderBase]: 2031/3307 cut-off events. [2024-11-09 15:16:07,950 INFO L125 PetriNetUnfolderBase]: For 1020/1020 co-relation queries the response was YES. [2024-11-09 15:16:07,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7564 conditions, 3307 events. 2031/3307 cut-off events. For 1020/1020 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 19809 event pairs, 63 based on Foata normal form. 80/3346 useless extension candidates. Maximal degree in co-relation 4419. Up to 1600 conditions per place. [2024-11-09 15:16:07,969 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 58 selfloop transitions, 7 changer transitions 0/81 dead transitions. [2024-11-09 15:16:07,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 81 transitions, 412 flow [2024-11-09 15:16:07,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 15:16:07,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 15:16:07,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-11-09 15:16:07,971 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6043360433604336 [2024-11-09 15:16:07,971 INFO L175 Difference]: Start difference. First operand has 63 places, 41 transitions, 152 flow. Second operand 9 states and 223 transitions. [2024-11-09 15:16:07,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 81 transitions, 412 flow [2024-11-09 15:16:07,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 81 transitions, 368 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-09 15:16:07,977 INFO L231 Difference]: Finished difference. Result has 64 places, 42 transitions, 154 flow [2024-11-09 15:16:07,978 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=154, PETRI_PLACES=64, PETRI_TRANSITIONS=42} [2024-11-09 15:16:07,978 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2024-11-09 15:16:07,978 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 42 transitions, 154 flow [2024-11-09 15:16:07,978 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 15:16:07,978 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:07,978 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:07,991 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 15:16:08,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:08,183 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:08,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:08,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1922297170, now seen corresponding path program 1 times [2024-11-09 15:16:08,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:08,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591618934] [2024-11-09 15:16:08,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:08,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:08,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:08,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:08,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591618934] [2024-11-09 15:16:08,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591618934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:08,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822808962] [2024-11-09 15:16:08,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:08,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:08,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:08,223 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 15:16:08,224 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 15:16:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:08,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:16:08,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:16:08,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:08,288 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:16:08,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:08,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822808962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:16:08,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:16:08,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 15:16:08,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070884685] [2024-11-09 15:16:08,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:16:08,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:16:08,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:08,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:16:08,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:16:08,332 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-09 15:16:08,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 42 transitions, 154 flow. Second operand has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 12 states have internal predecessors, (236), 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 15:16:08,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:08,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-09 15:16:08,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:08,776 INFO L124 PetriNetUnfolderBase]: 3627/5667 cut-off events. [2024-11-09 15:16:08,776 INFO L125 PetriNetUnfolderBase]: For 2068/2068 co-relation queries the response was YES. [2024-11-09 15:16:08,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12187 conditions, 5667 events. 3627/5667 cut-off events. For 2068/2068 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 35009 event pairs, 1719 based on Foata normal form. 252/5836 useless extension candidates. Maximal degree in co-relation 5410. Up to 2478 conditions per place. [2024-11-09 15:16:08,801 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 72 selfloop transitions, 9 changer transitions 0/96 dead transitions. [2024-11-09 15:16:08,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 96 transitions, 436 flow [2024-11-09 15:16:08,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:16:08,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:16:08,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 260 transitions. [2024-11-09 15:16:08,803 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6341463414634146 [2024-11-09 15:16:08,803 INFO L175 Difference]: Start difference. First operand has 64 places, 42 transitions, 154 flow. Second operand 10 states and 260 transitions. [2024-11-09 15:16:08,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 96 transitions, 436 flow [2024-11-09 15:16:08,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 421 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-09 15:16:08,807 INFO L231 Difference]: Finished difference. Result has 72 places, 48 transitions, 197 flow [2024-11-09 15:16:08,807 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=197, PETRI_PLACES=72, PETRI_TRANSITIONS=48} [2024-11-09 15:16:08,807 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 20 predicate places. [2024-11-09 15:16:08,807 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 48 transitions, 197 flow [2024-11-09 15:16:08,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 12 states have internal predecessors, (236), 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 15:16:08,808 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:08,808 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:08,823 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 15:16:09,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:09,008 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:09,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:09,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1962914200, now seen corresponding path program 1 times [2024-11-09 15:16:09,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:09,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962088616] [2024-11-09 15:16:09,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:09,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:16:09,017 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 15:16:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:16:09,024 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 15:16:09,024 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 15:16:09,024 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-09 15:16:09,024 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-09 15:16:09,024 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-09 15:16:09,024 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-09 15:16:09,024 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-09 15:16:09,025 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-09 15:16:09,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 15:16:09,025 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:09,025 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 15:16:09,025 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-09 15:16:09,044 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 15:16:09,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 49 transitions, 154 flow [2024-11-09 15:16:09,050 INFO L124 PetriNetUnfolderBase]: 5/98 cut-off events. [2024-11-09 15:16:09,050 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-09 15:16:09,050 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 176 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 15:16:09,051 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 49 transitions, 154 flow [2024-11-09 15:16:09,051 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 47 transitions, 146 flow [2024-11-09 15:16:09,052 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:16:09,052 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;@2be0727e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:16:09,052 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 15:16:09,053 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:16:09,053 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-09 15:16:09,053 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:16:09,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:09,053 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-09 15:16:09,053 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 15:16:09,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:09,054 INFO L85 PathProgramCache]: Analyzing trace with hash 11145413, now seen corresponding path program 1 times [2024-11-09 15:16:09,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:09,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577600713] [2024-11-09 15:16:09,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:09,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:09,077 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 15:16:09,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:09,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577600713] [2024-11-09 15:16:09,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577600713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:09,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:09,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:16:09,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696438038] [2024-11-09 15:16:09,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:09,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:09,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:09,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:09,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:09,083 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-09 15:16:09,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 15:16:09,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:09,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-09 15:16:09,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:10,413 INFO L124 PetriNetUnfolderBase]: 13688/19904 cut-off events. [2024-11-09 15:16:10,413 INFO L125 PetriNetUnfolderBase]: For 2844/2844 co-relation queries the response was YES. [2024-11-09 15:16:10,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38544 conditions, 19904 events. 13688/19904 cut-off events. For 2844/2844 co-relation queries the response was YES. Maximal size of possible extension queue 921. Compared 130929 event pairs, 10843 based on Foata normal form. 341/18884 useless extension candidates. Maximal degree in co-relation 17384. Up to 14251 conditions per place. [2024-11-09 15:16:10,507 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 41 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2024-11-09 15:16:10,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 65 transitions, 270 flow [2024-11-09 15:16:10,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:10,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:10,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-11-09 15:16:10,508 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6836734693877551 [2024-11-09 15:16:10,508 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 146 flow. Second operand 4 states and 134 transitions. [2024-11-09 15:16:10,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 65 transitions, 270 flow [2024-11-09 15:16:10,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 65 transitions, 257 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:10,514 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 155 flow [2024-11-09 15:16:10,514 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=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=155, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2024-11-09 15:16:10,514 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 4 predicate places. [2024-11-09 15:16:10,514 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 155 flow [2024-11-09 15:16:10,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 15:16:10,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:10,515 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:10,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-09 15:16:10,515 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 15:16:10,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:10,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1335215380, now seen corresponding path program 1 times [2024-11-09 15:16:10,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:10,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27606047] [2024-11-09 15:16:10,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:10,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:10,538 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 15:16:10,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:10,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27606047] [2024-11-09 15:16:10,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27606047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:10,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:10,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:10,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174556418] [2024-11-09 15:16:10,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:10,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:10,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:10,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:10,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:10,544 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-09 15:16:10,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 155 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 15:16:10,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:10,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-09 15:16:10,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:11,759 INFO L124 PetriNetUnfolderBase]: 12436/18312 cut-off events. [2024-11-09 15:16:11,760 INFO L125 PetriNetUnfolderBase]: For 2683/2683 co-relation queries the response was YES. [2024-11-09 15:16:11,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37997 conditions, 18312 events. 12436/18312 cut-off events. For 2683/2683 co-relation queries the response was YES. Maximal size of possible extension queue 878. Compared 121401 event pairs, 9591 based on Foata normal form. 340/18143 useless extension candidates. Maximal degree in co-relation 23653. Up to 12658 conditions per place. [2024-11-09 15:16:11,873 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 32 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2024-11-09 15:16:11,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 56 transitions, 239 flow [2024-11-09 15:16:11,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:11,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:11,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-11-09 15:16:11,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6224489795918368 [2024-11-09 15:16:11,875 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 155 flow. Second operand 4 states and 122 transitions. [2024-11-09 15:16:11,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 56 transitions, 239 flow [2024-11-09 15:16:11,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 56 transitions, 237 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:11,925 INFO L231 Difference]: Finished difference. Result has 69 places, 48 transitions, 157 flow [2024-11-09 15:16:11,925 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=157, PETRI_PLACES=69, PETRI_TRANSITIONS=48} [2024-11-09 15:16:11,926 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 5 predicate places. [2024-11-09 15:16:11,926 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 48 transitions, 157 flow [2024-11-09 15:16:11,926 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 15:16:11,926 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:11,926 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-09 15:16:11,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-09 15:16:11,926 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:11,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:11,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1320871235, now seen corresponding path program 1 times [2024-11-09 15:16:11,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:11,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085260222] [2024-11-09 15:16:11,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:11,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:11,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:11,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:11,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085260222] [2024-11-09 15:16:11,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085260222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:11,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:11,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:16:11,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903543876] [2024-11-09 15:16:11,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:11,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:11,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:11,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:11,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:11,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 49 [2024-11-09 15:16:11,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 48 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 15:16:11,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:11,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 49 [2024-11-09 15:16:11,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:13,125 INFO L124 PetriNetUnfolderBase]: 11183/17052 cut-off events. [2024-11-09 15:16:13,125 INFO L125 PetriNetUnfolderBase]: For 2850/2850 co-relation queries the response was YES. [2024-11-09 15:16:13,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35474 conditions, 17052 events. 11183/17052 cut-off events. For 2850/2850 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 116170 event pairs, 7795 based on Foata normal form. 1/16718 useless extension candidates. Maximal degree in co-relation 21490. Up to 14225 conditions per place. [2024-11-09 15:16:13,234 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 30 selfloop transitions, 2 changer transitions 1/55 dead transitions. [2024-11-09 15:16:13,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 55 transitions, 243 flow [2024-11-09 15:16:13,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:13,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:13,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-11-09 15:16:13,235 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-11-09 15:16:13,235 INFO L175 Difference]: Start difference. First operand has 69 places, 48 transitions, 157 flow. Second operand 4 states and 128 transitions. [2024-11-09 15:16:13,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 55 transitions, 243 flow [2024-11-09 15:16:13,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 55 transitions, 233 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:16:13,273 INFO L231 Difference]: Finished difference. Result has 71 places, 49 transitions, 165 flow [2024-11-09 15:16:13,273 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=71, PETRI_TRANSITIONS=49} [2024-11-09 15:16:13,273 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 7 predicate places. [2024-11-09 15:16:13,273 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 49 transitions, 165 flow [2024-11-09 15:16:13,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 15:16:13,274 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:13,274 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:13,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-09 15:16:13,274 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:13,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:13,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1557995808, now seen corresponding path program 1 times [2024-11-09 15:16:13,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:13,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242242376] [2024-11-09 15:16:13,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:13,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:13,295 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 15:16:13,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:13,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242242376] [2024-11-09 15:16:13,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242242376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:13,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:13,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:13,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943891960] [2024-11-09 15:16:13,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:13,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:13,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:13,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:13,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:13,301 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-09 15:16:13,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 49 transitions, 165 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 15:16:13,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:13,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-09 15:16:13,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:14,519 INFO L124 PetriNetUnfolderBase]: 12431/18293 cut-off events. [2024-11-09 15:16:14,519 INFO L125 PetriNetUnfolderBase]: For 3020/3020 co-relation queries the response was YES. [2024-11-09 15:16:14,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38643 conditions, 18293 events. 12431/18293 cut-off events. For 3020/3020 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 119697 event pairs, 8703 based on Foata normal form. 4/17964 useless extension candidates. Maximal degree in co-relation 24317. Up to 15809 conditions per place. [2024-11-09 15:16:14,637 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 32 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2024-11-09 15:16:14,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 56 transitions, 249 flow [2024-11-09 15:16:14,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:14,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:14,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-11-09 15:16:14,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6224489795918368 [2024-11-09 15:16:14,639 INFO L175 Difference]: Start difference. First operand has 71 places, 49 transitions, 165 flow. Second operand 4 states and 122 transitions. [2024-11-09 15:16:14,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 56 transitions, 249 flow [2024-11-09 15:16:14,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 56 transitions, 245 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-09 15:16:14,692 INFO L231 Difference]: Finished difference. Result has 73 places, 50 transitions, 177 flow [2024-11-09 15:16:14,692 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=73, PETRI_TRANSITIONS=50} [2024-11-09 15:16:14,692 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 9 predicate places. [2024-11-09 15:16:14,693 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 50 transitions, 177 flow [2024-11-09 15:16:14,693 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 15:16:14,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:14,693 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:14,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-09 15:16:14,693 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 15:16:14,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:14,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1281142215, now seen corresponding path program 1 times [2024-11-09 15:16:14,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:14,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561714034] [2024-11-09 15:16:14,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:14,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:14,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:14,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:14,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561714034] [2024-11-09 15:16:14,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561714034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:14,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303047152] [2024-11-09 15:16:14,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:14,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:14,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:14,738 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 15:16:14,739 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 15:16:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:14,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:16:14,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:16:14,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:14,818 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:16:14,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303047152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:14,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:16:14,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-09 15:16:14,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141689300] [2024-11-09 15:16:14,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:14,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:16:14,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:14,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:16:14,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:16:14,828 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-09 15:16:14,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 50 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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 15:16:14,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:14,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-09 15:16:14,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:16,095 INFO L124 PetriNetUnfolderBase]: 12435/17959 cut-off events. [2024-11-09 15:16:16,095 INFO L125 PetriNetUnfolderBase]: For 2864/2864 co-relation queries the response was YES. [2024-11-09 15:16:16,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38323 conditions, 17959 events. 12435/17959 cut-off events. For 2864/2864 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 114518 event pairs, 5835 based on Foata normal form. 340/17620 useless extension candidates. Maximal degree in co-relation 22172. Up to 7538 conditions per place. [2024-11-09 15:16:16,187 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 56 selfloop transitions, 5 changer transitions 0/81 dead transitions. [2024-11-09 15:16:16,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 81 transitions, 359 flow [2024-11-09 15:16:16,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:16:16,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:16:16,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2024-11-09 15:16:16,188 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-11-09 15:16:16,188 INFO L175 Difference]: Start difference. First operand has 73 places, 50 transitions, 177 flow. Second operand 6 states and 192 transitions. [2024-11-09 15:16:16,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 81 transitions, 359 flow [2024-11-09 15:16:16,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 81 transitions, 355 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:16:16,221 INFO L231 Difference]: Finished difference. Result has 75 places, 49 transitions, 179 flow [2024-11-09 15:16:16,221 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=75, PETRI_TRANSITIONS=49} [2024-11-09 15:16:16,221 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 11 predicate places. [2024-11-09 15:16:16,221 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 49 transitions, 179 flow [2024-11-09 15:16:16,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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 15:16:16,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:16,222 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:16,239 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 15:16:16,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:16,422 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 15:16:16,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:16,423 INFO L85 PathProgramCache]: Analyzing trace with hash -587375192, now seen corresponding path program 1 times [2024-11-09 15:16:16,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:16,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787231953] [2024-11-09 15:16:16,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:16,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:16,459 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 15:16:16,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:16,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787231953] [2024-11-09 15:16:16,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787231953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:16,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401735046] [2024-11-09 15:16:16,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:16,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:16,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:16,462 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 15:16:16,463 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 15:16:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:16,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:16:16,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:16:16,539 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 15:16:16,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:16:16,576 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 15:16:16,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401735046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:16:16,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:16:16,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-09 15:16:16,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351495227] [2024-11-09 15:16:16,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:16:16,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 15:16:16,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:16,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 15:16:16,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-09 15:16:16,584 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-09 15:16:16,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 49 transitions, 179 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 15:16:16,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:16,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-09 15:16:16,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:17,788 INFO L124 PetriNetUnfolderBase]: 11183/16369 cut-off events. [2024-11-09 15:16:17,789 INFO L125 PetriNetUnfolderBase]: For 4892/4892 co-relation queries the response was YES. [2024-11-09 15:16:17,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36500 conditions, 16369 events. 11183/16369 cut-off events. For 4892/4892 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 104126 event pairs, 255 based on Foata normal form. 336/16556 useless extension candidates. Maximal degree in co-relation 21833. Up to 7937 conditions per place. [2024-11-09 15:16:17,886 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 85 selfloop transitions, 9 changer transitions 0/114 dead transitions. [2024-11-09 15:16:17,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 114 transitions, 575 flow [2024-11-09 15:16:17,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:16:17,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:16:17,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 309 transitions. [2024-11-09 15:16:17,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6306122448979592 [2024-11-09 15:16:17,887 INFO L175 Difference]: Start difference. First operand has 75 places, 49 transitions, 179 flow. Second operand 10 states and 309 transitions. [2024-11-09 15:16:17,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 114 transitions, 575 flow [2024-11-09 15:16:17,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 114 transitions, 517 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-09 15:16:17,945 INFO L231 Difference]: Finished difference. Result has 77 places, 52 transitions, 193 flow [2024-11-09 15:16:17,945 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=193, PETRI_PLACES=77, PETRI_TRANSITIONS=52} [2024-11-09 15:16:17,946 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 13 predicate places. [2024-11-09 15:16:17,946 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 52 transitions, 193 flow [2024-11-09 15:16:17,946 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 15:16:17,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:17,946 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:17,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 15:16:18,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-09 15:16:18,151 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:18,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:18,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1060702644, now seen corresponding path program 1 times [2024-11-09 15:16:18,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:18,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51601479] [2024-11-09 15:16:18,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:18,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:18,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:18,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:18,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51601479] [2024-11-09 15:16:18,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51601479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:18,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048112035] [2024-11-09 15:16:18,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:18,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:18,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:18,199 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:16:18,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 15:16:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:18,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:16:18,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:16:18,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:18,283 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:16:18,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:18,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048112035] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:16:18,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:16:18,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 15:16:18,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402560286] [2024-11-09 15:16:18,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:16:18,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:16:18,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:18,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:16:18,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:16:18,325 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-09 15:16:18,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 52 transitions, 193 flow. Second operand has 12 states, 12 states have (on average 23.666666666666668) internal successors, (284), 12 states have internal predecessors, (284), 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 15:16:18,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:18,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-09 15:16:18,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:20,459 INFO L124 PetriNetUnfolderBase]: 19947/28195 cut-off events. [2024-11-09 15:16:20,459 INFO L125 PetriNetUnfolderBase]: For 9140/9140 co-relation queries the response was YES. [2024-11-09 15:16:20,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59805 conditions, 28195 events. 19947/28195 cut-off events. For 9140/9140 co-relation queries the response was YES. Maximal size of possible extension queue 934. Compared 180212 event pairs, 9591 based on Foata normal form. 1020/28876 useless extension candidates. Maximal degree in co-relation 27170. Up to 12654 conditions per place. [2024-11-09 15:16:20,585 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 94 selfloop transitions, 9 changer transitions 0/122 dead transitions. [2024-11-09 15:16:20,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 122 transitions, 551 flow [2024-11-09 15:16:20,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:16:20,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:16:20,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 320 transitions. [2024-11-09 15:16:20,587 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-11-09 15:16:20,587 INFO L175 Difference]: Start difference. First operand has 77 places, 52 transitions, 193 flow. Second operand 10 states and 320 transitions. [2024-11-09 15:16:20,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 122 transitions, 551 flow [2024-11-09 15:16:20,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 122 transitions, 531 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-09 15:16:20,604 INFO L231 Difference]: Finished difference. Result has 85 places, 58 transitions, 231 flow [2024-11-09 15:16:20,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=231, PETRI_PLACES=85, PETRI_TRANSITIONS=58} [2024-11-09 15:16:20,605 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 21 predicate places. [2024-11-09 15:16:20,605 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 58 transitions, 231 flow [2024-11-09 15:16:20,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.666666666666668) internal successors, (284), 12 states have internal predecessors, (284), 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 15:16:20,605 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:20,605 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:20,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 15:16:20,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-09 15:16:20,806 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:20,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:20,806 INFO L85 PathProgramCache]: Analyzing trace with hash -205394890, now seen corresponding path program 2 times [2024-11-09 15:16:20,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:20,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075514177] [2024-11-09 15:16:20,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:20,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:20,884 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 15:16:20,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:20,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075514177] [2024-11-09 15:16:20,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075514177] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:16:20,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490306941] [2024-11-09 15:16:20,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:16:20,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:16:20,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:16:20,887 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 15:16:20,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 15:16:20,941 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 15:16:20,942 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:16:20,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:16:20,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:16:20,982 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-09 15:16:20,982 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:16:21,012 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-09 15:16:21,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490306941] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:16:21,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:16:21,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 2, 2] total 9 [2024-11-09 15:16:21,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387423669] [2024-11-09 15:16:21,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:16:21,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 15:16:21,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:21,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 15:16:21,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-09 15:16:21,031 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 49 [2024-11-09 15:16:21,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 58 transitions, 231 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 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 15:16:21,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:21,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 49 [2024-11-09 15:16:21,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:23,031 INFO L124 PetriNetUnfolderBase]: 18663/26525 cut-off events. [2024-11-09 15:16:23,031 INFO L125 PetriNetUnfolderBase]: For 14950/14950 co-relation queries the response was YES. [2024-11-09 15:16:23,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59892 conditions, 26525 events. 18663/26525 cut-off events. For 14950/14950 co-relation queries the response was YES. Maximal size of possible extension queue 892. Compared 169213 event pairs, 5391 based on Foata normal form. 340/26548 useless extension candidates. Maximal degree in co-relation 46005. Up to 15632 conditions per place. [2024-11-09 15:16:23,117 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 35 selfloop transitions, 4 changer transitions 29/86 dead transitions. [2024-11-09 15:16:23,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 86 transitions, 425 flow [2024-11-09 15:16:23,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 15:16:23,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 15:16:23,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-11-09 15:16:23,118 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-11-09 15:16:23,118 INFO L175 Difference]: Start difference. First operand has 85 places, 58 transitions, 231 flow. Second operand 10 states and 259 transitions. [2024-11-09 15:16:23,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 86 transitions, 425 flow [2024-11-09 15:16:23,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 86 transitions, 399 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-09 15:16:23,196 INFO L231 Difference]: Finished difference. Result has 87 places, 45 transitions, 155 flow [2024-11-09 15:16:23,196 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=155, PETRI_PLACES=87, PETRI_TRANSITIONS=45} [2024-11-09 15:16:23,197 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 23 predicate places. [2024-11-09 15:16:23,197 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 45 transitions, 155 flow [2024-11-09 15:16:23,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 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 15:16:23,197 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:23,197 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:23,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 15:16:23,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-09 15:16:23,398 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:23,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:23,398 INFO L85 PathProgramCache]: Analyzing trace with hash -823210519, now seen corresponding path program 1 times [2024-11-09 15:16:23,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:23,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978442248] [2024-11-09 15:16:23,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:23,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:16:23,406 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 15:16:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:16:23,418 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 15:16:23,420 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 15:16:23,420 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-09 15:16:23,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-09 15:16:23,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-09 15:16:23,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-09 15:16:23,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-09 15:16:23,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-09 15:16:23,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-09 15:16:23,421 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:23,421 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 15:16:23,422 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-09 15:16:23,443 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 15:16:23,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 57 transitions, 194 flow [2024-11-09 15:16:23,451 INFO L124 PetriNetUnfolderBase]: 6/120 cut-off events. [2024-11-09 15:16:23,451 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-09 15:16:23,451 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 207 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 15:16:23,451 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 57 transitions, 194 flow [2024-11-09 15:16:23,452 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 55 transitions, 185 flow [2024-11-09 15:16:23,452 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:16:23,454 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;@2be0727e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:16:23,454 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 15:16:23,454 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:16:23,455 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-09 15:16:23,455 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:16:23,455 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:23,455 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-09 15:16:23,455 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 15:16:23,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:23,455 INFO L85 PathProgramCache]: Analyzing trace with hash 12900101, now seen corresponding path program 1 times [2024-11-09 15:16:23,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:23,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499330795] [2024-11-09 15:16:23,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:23,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:23,475 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 15:16:23,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:23,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499330795] [2024-11-09 15:16:23,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499330795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:23,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:23,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:16:23,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840587416] [2024-11-09 15:16:23,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:23,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:23,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:23,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:23,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:23,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 57 [2024-11-09 15:16:23,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 55 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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 15:16:23,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:23,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 57 [2024-11-09 15:16:23,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:30,176 INFO L124 PetriNetUnfolderBase]: 69752/94656 cut-off events. [2024-11-09 15:16:30,176 INFO L125 PetriNetUnfolderBase]: For 19228/19228 co-relation queries the response was YES. [2024-11-09 15:16:30,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185234 conditions, 94656 events. 69752/94656 cut-off events. For 19228/19228 co-relation queries the response was YES. Maximal size of possible extension queue 3490. Compared 636660 event pairs, 55643 based on Foata normal form. 1365/90563 useless extension candidates. Maximal degree in co-relation 85096. Up to 69291 conditions per place. [2024-11-09 15:16:30,940 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 49 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2024-11-09 15:16:30,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 77 transitions, 333 flow [2024-11-09 15:16:30,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:30,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:30,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-11-09 15:16:30,941 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6929824561403509 [2024-11-09 15:16:30,941 INFO L175 Difference]: Start difference. First operand has 76 places, 55 transitions, 185 flow. Second operand 4 states and 158 transitions. [2024-11-09 15:16:30,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 77 transitions, 333 flow [2024-11-09 15:16:31,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 77 transitions, 308 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:31,005 INFO L231 Difference]: Finished difference. Result has 80 places, 57 transitions, 182 flow [2024-11-09 15:16:31,005 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=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=80, PETRI_TRANSITIONS=57} [2024-11-09 15:16:31,006 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 4 predicate places. [2024-11-09 15:16:31,006 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 57 transitions, 182 flow [2024-11-09 15:16:31,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 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 15:16:31,006 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:31,006 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:16:31,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-09 15:16:31,006 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 15:16:31,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:31,007 INFO L85 PathProgramCache]: Analyzing trace with hash 2075122490, now seen corresponding path program 1 times [2024-11-09 15:16:31,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:31,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428606669] [2024-11-09 15:16:31,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:31,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:31,027 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 15:16:31,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:31,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428606669] [2024-11-09 15:16:31,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428606669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:31,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:31,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:16:31,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91185846] [2024-11-09 15:16:31,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:31,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:31,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:31,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:31,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:31,033 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 57 [2024-11-09 15:16:31,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 57 transitions, 182 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 15:16:31,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:31,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 57 [2024-11-09 15:16:31,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:16:37,310 INFO L124 PetriNetUnfolderBase]: 63380/86920 cut-off events. [2024-11-09 15:16:37,311 INFO L125 PetriNetUnfolderBase]: For 14843/14843 co-relation queries the response was YES. [2024-11-09 15:16:37,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179311 conditions, 86920 events. 63380/86920 cut-off events. For 14843/14843 co-relation queries the response was YES. Maximal size of possible extension queue 3314. Compared 591173 event pairs, 49271 based on Foata normal form. 1364/86238 useless extension candidates. Maximal degree in co-relation 113765. Up to 61554 conditions per place. [2024-11-09 15:16:37,928 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 38 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2024-11-09 15:16:37,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 66 transitions, 282 flow [2024-11-09 15:16:37,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:16:37,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:16:37,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2024-11-09 15:16:37,929 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-11-09 15:16:37,929 INFO L175 Difference]: Start difference. First operand has 80 places, 57 transitions, 182 flow. Second operand 4 states and 144 transitions. [2024-11-09 15:16:37,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 66 transitions, 282 flow [2024-11-09 15:16:38,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 66 transitions, 280 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:16:38,943 INFO L231 Difference]: Finished difference. Result has 81 places, 56 transitions, 184 flow [2024-11-09 15:16:38,943 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=81, PETRI_TRANSITIONS=56} [2024-11-09 15:16:38,944 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 5 predicate places. [2024-11-09 15:16:38,944 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 56 transitions, 184 flow [2024-11-09 15:16:38,944 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 15:16:38,944 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:16:38,944 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-09 15:16:38,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-09 15:16:38,944 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 15:16:38,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:16:38,944 INFO L85 PathProgramCache]: Analyzing trace with hash 2055230492, now seen corresponding path program 1 times [2024-11-09 15:16:38,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:16:38,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284746474] [2024-11-09 15:16:38,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:16:38,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:16:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:16:38,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:16:38,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:16:38,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284746474] [2024-11-09 15:16:38,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284746474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:16:38,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:16:38,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:16:38,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831218238] [2024-11-09 15:16:38,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:16:38,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:16:38,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:16:38,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:16:38,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:16:38,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 57 [2024-11-09 15:16:38,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 56 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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 15:16:38,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:16:38,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 57 [2024-11-09 15:16:38,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand