./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/fib_unsafe-10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/fib_unsafe-10.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 89d9c43e2f37f1bac8114d01260f8a993f33530b50231d4afed1f3cf3859d385 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:19:50,594 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:19:50,650 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:19:50,654 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:19:50,654 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:19:50,677 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:19:50,679 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:19:50,679 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:19:50,679 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:19:50,680 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:19:50,680 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:19:50,680 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:19:50,681 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:19:50,681 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:19:50,681 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:19:50,681 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:19:50,681 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:19:50,681 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:19:50,681 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:19:50,681 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:19:50,682 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:19:50,682 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:19:50,682 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:19:50,682 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:19:50,682 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:19:50,683 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:19:50,683 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:19:50,683 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:19:50,683 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:19:50,683 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:19:50,683 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:19:50,683 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:19:50,683 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:19:50,683 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:19:50,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:19:50,683 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:19:50,683 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:19:50,683 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:19:50,683 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:19:50,683 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:19:50,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:19:50,683 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:19:50,684 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:19:50,684 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:19:50,684 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:19:50,684 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 89d9c43e2f37f1bac8114d01260f8a993f33530b50231d4afed1f3cf3859d385 [2025-03-09 06:19:50,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:19:50,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:19:50,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:19:50,910 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:19:50,911 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:19:50,911 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_unsafe-10.i [2025-03-09 06:19:52,049 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b667a34a7/8416918f122c470bb0e37dbd775dc52d/FLAGc77869581 [2025-03-09 06:19:52,332 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:19:52,333 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-10.i [2025-03-09 06:19:52,347 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b667a34a7/8416918f122c470bb0e37dbd775dc52d/FLAGc77869581 [2025-03-09 06:19:52,622 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b667a34a7/8416918f122c470bb0e37dbd775dc52d [2025-03-09 06:19:52,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:19:52,625 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:19:52,626 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:19:52,626 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:19:52,629 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:19:52,629 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:19:52" (1/1) ... [2025-03-09 06:19:52,630 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c0e8fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:52, skipping insertion in model container [2025-03-09 06:19:52,630 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:19:52" (1/1) ... [2025-03-09 06:19:52,648 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:19:52,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:19:52,830 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:19:52,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:19:52,888 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:19:52,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:52 WrapperNode [2025-03-09 06:19:52,889 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:19:52,889 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:19:52,890 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:19:52,890 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:19:52,894 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:52" (1/1) ... [2025-03-09 06:19:52,905 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:52" (1/1) ... [2025-03-09 06:19:52,919 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 69 [2025-03-09 06:19:52,919 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:19:52,920 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:19:52,920 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:19:52,920 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:19:52,925 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:52" (1/1) ... [2025-03-09 06:19:52,925 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:52" (1/1) ... [2025-03-09 06:19:52,927 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:52" (1/1) ... [2025-03-09 06:19:52,942 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]. [2025-03-09 06:19:52,944 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:52" (1/1) ... [2025-03-09 06:19:52,944 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:52" (1/1) ... [2025-03-09 06:19:52,947 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:52" (1/1) ... [2025-03-09 06:19:52,951 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:52" (1/1) ... [2025-03-09 06:19:52,951 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:52" (1/1) ... [2025-03-09 06:19:52,952 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:52" (1/1) ... [2025-03-09 06:19:52,953 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:19:52,954 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:19:52,954 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:19:52,954 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:19:52,954 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:52" (1/1) ... [2025-03-09 06:19:52,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:19:52,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:52,980 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) [2025-03-09 06:19:52,981 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 [2025-03-09 06:19:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-03-09 06:19:52,996 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-03-09 06:19:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-03-09 06:19:52,996 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-03-09 06:19:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 06:19:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:19:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:19:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 06:19:52,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:19:52,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:19:52,997 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:19:53,080 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:19:53,081 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:19:53,223 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:19:53,223 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:19:53,293 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:19:53,293 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:19:53,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:19:53 BoogieIcfgContainer [2025-03-09 06:19:53,293 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:19:53,295 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:19:53,295 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:19:53,298 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:19:53,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:19:52" (1/3) ... [2025-03-09 06:19:53,299 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44daf4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:19:53, skipping insertion in model container [2025-03-09 06:19:53,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:19:52" (2/3) ... [2025-03-09 06:19:53,299 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44daf4c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:19:53, skipping insertion in model container [2025-03-09 06:19:53,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:19:53" (3/3) ... [2025-03-09 06:19:53,300 INFO L128 eAbstractionObserver]: Analyzing ICFG fib_unsafe-10.i [2025-03-09 06:19:53,309 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:19:53,310 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fib_unsafe-10.i that has 3 procedures, 42 locations, 1 initial locations, 3 loop locations, and 12 error locations. [2025-03-09 06:19:53,310 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:19:53,352 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 06:19:53,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 96 flow [2025-03-09 06:19:53,401 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2025-03-09 06:19:53,403 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:19:53,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 42 events. 3/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 120 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2025-03-09 06:19:53,405 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 96 flow [2025-03-09 06:19:53,410 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 42 transitions, 90 flow [2025-03-09 06:19:53,415 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:19:53,422 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;@5a932d2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:19:53,422 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2025-03-09 06:19:53,426 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:19:53,427 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-03-09 06:19:53,427 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:19:53,427 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:53,427 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:53,427 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:53,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:53,431 INFO L85 PathProgramCache]: Analyzing trace with hash 575390525, now seen corresponding path program 1 times [2025-03-09 06:19:53,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:53,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124296532] [2025-03-09 06:19:53,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:53,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:53,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-09 06:19:53,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-09 06:19:53,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:53,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:53,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:53,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:53,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124296532] [2025-03-09 06:19:53,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124296532] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:53,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:53,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:19:53,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125361367] [2025-03-09 06:19:53,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:53,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:19:53,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:53,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:19:53,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:19:53,668 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:53,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2025-03-09 06:19:53,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:53,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:53,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:53,863 INFO L124 PetriNetUnfolderBase]: 785/1522 cut-off events. [2025-03-09 06:19:53,863 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-09 06:19:53,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2733 conditions, 1522 events. 785/1522 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 9427 event pairs, 188 based on Foata normal form. 0/1146 useless extension candidates. Maximal degree in co-relation 2717. Up to 612 conditions per place. [2025-03-09 06:19:53,874 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 49 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2025-03-09 06:19:53,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 71 transitions, 259 flow [2025-03-09 06:19:53,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:19:53,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:19:53,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2025-03-09 06:19:53,882 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2025-03-09 06:19:53,883 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 90 flow. Second operand 4 states and 134 transitions. [2025-03-09 06:19:53,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 71 transitions, 259 flow [2025-03-09 06:19:53,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 71 transitions, 256 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:19:53,888 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 119 flow [2025-03-09 06:19:53,891 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2025-03-09 06:19:53,893 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2025-03-09 06:19:53,894 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 119 flow [2025-03-09 06:19:53,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2025-03-09 06:19:53,895 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:53,895 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:53,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:19:53,896 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:53,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:53,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1129395496, now seen corresponding path program 1 times [2025-03-09 06:19:53,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:53,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475580074] [2025-03-09 06:19:53,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:53,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:53,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:19:53,916 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:19:53,916 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:53,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:53,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:53,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:53,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475580074] [2025-03-09 06:19:53,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475580074] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:53,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:53,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:19:53,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262326602] [2025-03-09 06:19:53,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:53,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:19:53,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:53,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:19:53,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:19:53,973 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2025-03-09 06:19:53,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:53,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:53,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2025-03-09 06:19:53,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:54,193 INFO L124 PetriNetUnfolderBase]: 1425/2717 cut-off events. [2025-03-09 06:19:54,194 INFO L125 PetriNetUnfolderBase]: For 407/407 co-relation queries the response was YES. [2025-03-09 06:19:54,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5725 conditions, 2717 events. 1425/2717 cut-off events. For 407/407 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 19076 event pairs, 486 based on Foata normal form. 53/2299 useless extension candidates. Maximal degree in co-relation 5707. Up to 1217 conditions per place. [2025-03-09 06:19:54,232 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 46 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2025-03-09 06:19:54,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 64 transitions, 273 flow [2025-03-09 06:19:54,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:19:54,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:19:54,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-03-09 06:19:54,235 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7348484848484849 [2025-03-09 06:19:54,235 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 119 flow. Second operand 3 states and 97 transitions. [2025-03-09 06:19:54,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 64 transitions, 273 flow [2025-03-09 06:19:54,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 64 transitions, 273 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:19:54,237 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 131 flow [2025-03-09 06:19:54,237 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2025-03-09 06:19:54,239 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2025-03-09 06:19:54,239 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 131 flow [2025-03-09 06:19:54,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:54,240 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:54,240 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:54,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 06:19:54,240 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:54,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:54,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1100476575, now seen corresponding path program 1 times [2025-03-09 06:19:54,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:54,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081413730] [2025-03-09 06:19:54,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:54,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:54,250 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:19:54,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:19:54,257 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:54,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:54,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:54,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:54,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081413730] [2025-03-09 06:19:54,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081413730] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:54,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:54,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:19:54,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039673399] [2025-03-09 06:19:54,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:54,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:19:54,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:54,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:19:54,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:19:54,331 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-09 06:19:54,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:54,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:54,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-09 06:19:54,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:54,568 INFO L124 PetriNetUnfolderBase]: 1745/3008 cut-off events. [2025-03-09 06:19:54,568 INFO L125 PetriNetUnfolderBase]: For 544/594 co-relation queries the response was YES. [2025-03-09 06:19:54,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6811 conditions, 3008 events. 1745/3008 cut-off events. For 544/594 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 18988 event pairs, 453 based on Foata normal form. 144/2630 useless extension candidates. Maximal degree in co-relation 6790. Up to 1535 conditions per place. [2025-03-09 06:19:54,581 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 63 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2025-03-09 06:19:54,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 80 transitions, 361 flow [2025-03-09 06:19:54,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:19:54,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:19:54,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2025-03-09 06:19:54,583 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2025-03-09 06:19:54,583 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 131 flow. Second operand 4 states and 128 transitions. [2025-03-09 06:19:54,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 80 transitions, 361 flow [2025-03-09 06:19:54,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 357 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:19:54,585 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 153 flow [2025-03-09 06:19:54,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2025-03-09 06:19:54,586 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2025-03-09 06:19:54,586 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 153 flow [2025-03-09 06:19:54,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:54,586 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:54,586 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:54,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 06:19:54,586 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:54,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:54,587 INFO L85 PathProgramCache]: Analyzing trace with hash -651521824, now seen corresponding path program 1 times [2025-03-09 06:19:54,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:54,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911114168] [2025-03-09 06:19:54,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:54,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:54,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:19:54,597 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:19:54,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:54,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:54,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:54,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:54,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911114168] [2025-03-09 06:19:54,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911114168] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:54,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:54,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:19:54,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044941840] [2025-03-09 06:19:54,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:54,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:19:54,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:54,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:19:54,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:19:54,641 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2025-03-09 06:19:54,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:54,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:54,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2025-03-09 06:19:54,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:54,806 INFO L124 PetriNetUnfolderBase]: 1381/2582 cut-off events. [2025-03-09 06:19:54,807 INFO L125 PetriNetUnfolderBase]: For 724/910 co-relation queries the response was YES. [2025-03-09 06:19:54,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5976 conditions, 2582 events. 1381/2582 cut-off events. For 724/910 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17917 event pairs, 468 based on Foata normal form. 102/2213 useless extension candidates. Maximal degree in co-relation 5952. Up to 1179 conditions per place. [2025-03-09 06:19:54,820 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 48 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2025-03-09 06:19:54,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 318 flow [2025-03-09 06:19:54,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:19:54,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:19:54,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-03-09 06:19:54,821 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7348484848484849 [2025-03-09 06:19:54,821 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 153 flow. Second operand 3 states and 97 transitions. [2025-03-09 06:19:54,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 318 flow [2025-03-09 06:19:54,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 67 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:19:54,847 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 159 flow [2025-03-09 06:19:54,847 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2025-03-09 06:19:54,847 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2025-03-09 06:19:54,847 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 159 flow [2025-03-09 06:19:54,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:54,848 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:54,848 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:54,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:19:54,848 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:54,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:54,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1304196917, now seen corresponding path program 1 times [2025-03-09 06:19:54,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:54,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137565182] [2025-03-09 06:19:54,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:54,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:54,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:19:54,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:19:54,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:54,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:54,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:54,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:54,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137565182] [2025-03-09 06:19:54,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137565182] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:54,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:54,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:19:54,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669139652] [2025-03-09 06:19:54,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:54,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:19:54,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:54,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:19:54,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:19:54,901 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-09 06:19:54,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:54,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:54,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-09 06:19:54,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:55,250 INFO L124 PetriNetUnfolderBase]: 2577/4479 cut-off events. [2025-03-09 06:19:55,250 INFO L125 PetriNetUnfolderBase]: For 1559/2051 co-relation queries the response was YES. [2025-03-09 06:19:55,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10688 conditions, 4479 events. 2577/4479 cut-off events. For 1559/2051 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 30852 event pairs, 577 based on Foata normal form. 317/4073 useless extension candidates. Maximal degree in co-relation 10662. Up to 2501 conditions per place. [2025-03-09 06:19:55,269 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2025-03-09 06:19:55,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 83 transitions, 413 flow [2025-03-09 06:19:55,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:19:55,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:19:55,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-03-09 06:19:55,271 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2025-03-09 06:19:55,271 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 159 flow. Second operand 4 states and 124 transitions. [2025-03-09 06:19:55,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 83 transitions, 413 flow [2025-03-09 06:19:55,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 83 transitions, 405 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:19:55,275 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 179 flow [2025-03-09 06:19:55,275 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2025-03-09 06:19:55,276 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2025-03-09 06:19:55,277 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 179 flow [2025-03-09 06:19:55,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:19:55,277 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:55,277 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:55,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:19:55,277 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:55,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:55,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1277660195, now seen corresponding path program 1 times [2025-03-09 06:19:55,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:55,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096080428] [2025-03-09 06:19:55,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:55,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:55,286 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:19:55,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:19:55,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:55,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:55,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:55,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:55,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096080428] [2025-03-09 06:19:55,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096080428] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:55,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:55,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:19:55,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259635999] [2025-03-09 06:19:55,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:55,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:19:55,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:55,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:19:55,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:19:55,336 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2025-03-09 06:19:55,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2025-03-09 06:19:55,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:55,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2025-03-09 06:19:55,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:55,569 INFO L124 PetriNetUnfolderBase]: 1777/3395 cut-off events. [2025-03-09 06:19:55,570 INFO L125 PetriNetUnfolderBase]: For 1293/1827 co-relation queries the response was YES. [2025-03-09 06:19:55,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8347 conditions, 3395 events. 1777/3395 cut-off events. For 1293/1827 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 24843 event pairs, 227 based on Foata normal form. 355/3109 useless extension candidates. Maximal degree in co-relation 8319. Up to 1937 conditions per place. [2025-03-09 06:19:55,582 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2025-03-09 06:19:55,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 451 flow [2025-03-09 06:19:55,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:19:55,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:19:55,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-03-09 06:19:55,583 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2025-03-09 06:19:55,583 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 179 flow. Second operand 4 states and 124 transitions. [2025-03-09 06:19:55,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 451 flow [2025-03-09 06:19:55,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:19:55,585 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 197 flow [2025-03-09 06:19:55,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2025-03-09 06:19:55,586 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2025-03-09 06:19:55,586 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 197 flow [2025-03-09 06:19:55,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2025-03-09 06:19:55,586 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:55,586 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:55,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 06:19:55,587 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:55,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:55,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1749870056, now seen corresponding path program 1 times [2025-03-09 06:19:55,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:55,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134046406] [2025-03-09 06:19:55,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:55,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:55,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:19:55,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:19:55,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:55,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:55,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:55,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:55,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134046406] [2025-03-09 06:19:55,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134046406] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:55,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:55,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:19:55,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084582984] [2025-03-09 06:19:55,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:55,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:19:55,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:55,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:19:55,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:19:55,661 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:55,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2025-03-09 06:19:55,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:55,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:55,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:55,855 INFO L124 PetriNetUnfolderBase]: 1279/2491 cut-off events. [2025-03-09 06:19:55,855 INFO L125 PetriNetUnfolderBase]: For 1526/1863 co-relation queries the response was YES. [2025-03-09 06:19:55,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6742 conditions, 2491 events. 1279/2491 cut-off events. For 1526/1863 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 16934 event pairs, 183 based on Foata normal form. 40/2168 useless extension candidates. Maximal degree in co-relation 6711. Up to 954 conditions per place. [2025-03-09 06:19:55,866 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 69 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2025-03-09 06:19:55,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 94 transitions, 513 flow [2025-03-09 06:19:55,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:19:55,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:19:55,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2025-03-09 06:19:55,867 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2025-03-09 06:19:55,867 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 197 flow. Second operand 5 states and 160 transitions. [2025-03-09 06:19:55,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 94 transitions, 513 flow [2025-03-09 06:19:55,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 94 transitions, 503 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:19:55,871 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 217 flow [2025-03-09 06:19:55,871 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2025-03-09 06:19:55,871 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2025-03-09 06:19:55,872 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 217 flow [2025-03-09 06:19:55,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2025-03-09 06:19:55,872 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:55,872 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:55,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:19:55,872 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:55,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:55,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1115148775, now seen corresponding path program 1 times [2025-03-09 06:19:55,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:55,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786624934] [2025-03-09 06:19:55,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:55,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:55,877 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:19:55,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:19:55,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:55,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:55,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:55,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:55,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786624934] [2025-03-09 06:19:55,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786624934] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:55,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:55,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:19:55,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244658450] [2025-03-09 06:19:55,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:55,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:19:55,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:55,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:19:55,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:19:55,917 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:55,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2025-03-09 06:19:55,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:55,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:55,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:56,112 INFO L124 PetriNetUnfolderBase]: 1331/2637 cut-off events. [2025-03-09 06:19:56,113 INFO L125 PetriNetUnfolderBase]: For 1957/2223 co-relation queries the response was YES. [2025-03-09 06:19:56,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7445 conditions, 2637 events. 1331/2637 cut-off events. For 1957/2223 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 18315 event pairs, 255 based on Foata normal form. 82/2540 useless extension candidates. Maximal degree in co-relation 7412. Up to 1260 conditions per place. [2025-03-09 06:19:56,126 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 69 selfloop transitions, 7 changer transitions 0/95 dead transitions. [2025-03-09 06:19:56,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 95 transitions, 534 flow [2025-03-09 06:19:56,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:19:56,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:19:56,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2025-03-09 06:19:56,127 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7318181818181818 [2025-03-09 06:19:56,127 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 217 flow. Second operand 5 states and 161 transitions. [2025-03-09 06:19:56,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 95 transitions, 534 flow [2025-03-09 06:19:56,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 95 transitions, 523 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:19:56,133 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 242 flow [2025-03-09 06:19:56,133 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2025-03-09 06:19:56,133 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2025-03-09 06:19:56,133 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 242 flow [2025-03-09 06:19:56,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2025-03-09 06:19:56,133 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:56,133 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:56,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 06:19:56,133 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:56,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:56,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1114810856, now seen corresponding path program 1 times [2025-03-09 06:19:56,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:56,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494417408] [2025-03-09 06:19:56,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:56,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:56,139 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:19:56,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:19:56,142 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:56,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:56,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:56,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:56,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494417408] [2025-03-09 06:19:56,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494417408] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:56,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:56,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:19:56,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840616138] [2025-03-09 06:19:56,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:56,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:19:56,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:56,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:19:56,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:19:56,195 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:56,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2025-03-09 06:19:56,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:56,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:56,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:56,426 INFO L124 PetriNetUnfolderBase]: 1187/2365 cut-off events. [2025-03-09 06:19:56,427 INFO L125 PetriNetUnfolderBase]: For 2368/2607 co-relation queries the response was YES. [2025-03-09 06:19:56,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6984 conditions, 2365 events. 1187/2365 cut-off events. For 2368/2607 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16128 event pairs, 303 based on Foata normal form. 80/2290 useless extension candidates. Maximal degree in co-relation 6950. Up to 1384 conditions per place. [2025-03-09 06:19:56,441 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 56 selfloop transitions, 5 changer transitions 0/80 dead transitions. [2025-03-09 06:19:56,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 80 transitions, 464 flow [2025-03-09 06:19:56,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:19:56,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:19:56,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2025-03-09 06:19:56,442 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6636363636363637 [2025-03-09 06:19:56,443 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 242 flow. Second operand 5 states and 146 transitions. [2025-03-09 06:19:56,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 80 transitions, 464 flow [2025-03-09 06:19:56,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 80 transitions, 449 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-03-09 06:19:56,448 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 243 flow [2025-03-09 06:19:56,449 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=71, PETRI_TRANSITIONS=54} [2025-03-09 06:19:56,449 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2025-03-09 06:19:56,449 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 243 flow [2025-03-09 06:19:56,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2025-03-09 06:19:56,450 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:56,450 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:56,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 06:19:56,450 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:56,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:56,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1114810855, now seen corresponding path program 1 times [2025-03-09 06:19:56,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:56,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389341879] [2025-03-09 06:19:56,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:56,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:56,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:19:56,457 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:19:56,457 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:56,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:56,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:56,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:56,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389341879] [2025-03-09 06:19:56,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389341879] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:56,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:56,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:19:56,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562743937] [2025-03-09 06:19:56,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:56,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:19:56,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:56,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:19:56,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:19:56,508 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:19:56,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 54 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2025-03-09 06:19:56,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:56,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:19:56,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:56,739 INFO L124 PetriNetUnfolderBase]: 1235/2453 cut-off events. [2025-03-09 06:19:56,739 INFO L125 PetriNetUnfolderBase]: For 2793/3041 co-relation queries the response was YES. [2025-03-09 06:19:56,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7311 conditions, 2453 events. 1235/2453 cut-off events. For 2793/3041 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 16657 event pairs, 295 based on Foata normal form. 80/2434 useless extension candidates. Maximal degree in co-relation 7276. Up to 1400 conditions per place. [2025-03-09 06:19:56,769 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 66 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2025-03-09 06:19:56,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 92 transitions, 538 flow [2025-03-09 06:19:56,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:19:56,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:19:56,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2025-03-09 06:19:56,770 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7136363636363636 [2025-03-09 06:19:56,770 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 243 flow. Second operand 5 states and 157 transitions. [2025-03-09 06:19:56,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 92 transitions, 538 flow [2025-03-09 06:19:56,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 92 transitions, 524 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 06:19:56,774 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 265 flow [2025-03-09 06:19:56,774 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=265, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2025-03-09 06:19:56,774 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2025-03-09 06:19:56,775 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 265 flow [2025-03-09 06:19:56,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2025-03-09 06:19:56,775 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:56,775 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:56,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-09 06:19:56,775 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:56,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:56,776 INFO L85 PathProgramCache]: Analyzing trace with hash 774894829, now seen corresponding path program 1 times [2025-03-09 06:19:56,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:56,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392005970] [2025-03-09 06:19:56,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:56,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:56,779 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:19:56,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:19:56,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:56,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:56,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:56,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:56,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392005970] [2025-03-09 06:19:56,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392005970] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:19:56,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785298733] [2025-03-09 06:19:56,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:56,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:56,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:56,833 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) [2025-03-09 06:19:56,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 06:19:56,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:19:56,875 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:19:56,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:56,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:56,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:19:56,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:19:56,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:56,966 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:19:56,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785298733] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:56,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:19:56,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2025-03-09 06:19:56,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097999119] [2025-03-09 06:19:56,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:56,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:19:56,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:56,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:19:56,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:19:56,975 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2025-03-09 06:19:56,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 265 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2025-03-09 06:19:56,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:56,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2025-03-09 06:19:56,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:57,133 INFO L124 PetriNetUnfolderBase]: 1235/2574 cut-off events. [2025-03-09 06:19:57,133 INFO L125 PetriNetUnfolderBase]: For 4215/4546 co-relation queries the response was YES. [2025-03-09 06:19:57,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7678 conditions, 2574 events. 1235/2574 cut-off events. For 4215/4546 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 18608 event pairs, 187 based on Foata normal form. 188/2677 useless extension candidates. Maximal degree in co-relation 7643. Up to 1444 conditions per place. [2025-03-09 06:19:57,146 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 57 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2025-03-09 06:19:57,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 515 flow [2025-03-09 06:19:57,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:19:57,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:19:57,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2025-03-09 06:19:57,148 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6306818181818182 [2025-03-09 06:19:57,148 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 265 flow. Second operand 4 states and 111 transitions. [2025-03-09 06:19:57,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 515 flow [2025-03-09 06:19:57,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 77 transitions, 495 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-03-09 06:19:57,152 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 254 flow [2025-03-09 06:19:57,153 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2025-03-09 06:19:57,153 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2025-03-09 06:19:57,153 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 254 flow [2025-03-09 06:19:57,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2025-03-09 06:19:57,153 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:57,153 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:57,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 06:19:57,358 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,SelfDestructingSolverStorable10 [2025-03-09 06:19:57,358 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:57,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:57,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1305596489, now seen corresponding path program 1 times [2025-03-09 06:19:57,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:57,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931989089] [2025-03-09 06:19:57,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:57,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:57,362 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:19:57,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:19:57,364 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:57,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:57,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:57,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:57,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931989089] [2025-03-09 06:19:57,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931989089] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:19:57,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312952205] [2025-03-09 06:19:57,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:57,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:57,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:57,403 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) [2025-03-09 06:19:57,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 06:19:57,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:19:57,447 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:19:57,447 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:57,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:57,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:19:57,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:19:57,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:57,473 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:19:57,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312952205] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:57,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:19:57,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-09 06:19:57,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839549947] [2025-03-09 06:19:57,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:57,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:19:57,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:57,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:19:57,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:19:57,483 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-09 06:19:57,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 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) [2025-03-09 06:19:57,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:57,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-09 06:19:57,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:57,747 INFO L124 PetriNetUnfolderBase]: 1657/2934 cut-off events. [2025-03-09 06:19:57,747 INFO L125 PetriNetUnfolderBase]: For 4829/5215 co-relation queries the response was YES. [2025-03-09 06:19:57,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9348 conditions, 2934 events. 1657/2934 cut-off events. For 4829/5215 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 19080 event pairs, 359 based on Foata normal form. 154/2976 useless extension candidates. Maximal degree in co-relation 9313. Up to 1194 conditions per place. [2025-03-09 06:19:57,765 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 90 selfloop transitions, 5 changer transitions 0/109 dead transitions. [2025-03-09 06:19:57,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 109 transitions, 696 flow [2025-03-09 06:19:57,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:19:57,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:19:57,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2025-03-09 06:19:57,767 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6439393939393939 [2025-03-09 06:19:57,767 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 254 flow. Second operand 6 states and 170 transitions. [2025-03-09 06:19:57,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 109 transitions, 696 flow [2025-03-09 06:19:57,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 109 transitions, 690 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:19:57,773 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 257 flow [2025-03-09 06:19:57,773 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=257, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2025-03-09 06:19:57,773 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2025-03-09 06:19:57,774 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 257 flow [2025-03-09 06:19:57,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 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) [2025-03-09 06:19:57,774 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:57,774 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:57,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 06:19:57,974 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,SelfDestructingSolverStorable11 [2025-03-09 06:19:57,974 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:57,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:57,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1748063893, now seen corresponding path program 1 times [2025-03-09 06:19:57,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:57,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825316033] [2025-03-09 06:19:57,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:57,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:57,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:19:57,981 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:19:57,981 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:57,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:58,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:58,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:58,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825316033] [2025-03-09 06:19:58,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825316033] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:19:58,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581981058] [2025-03-09 06:19:58,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:58,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:58,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:58,029 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) [2025-03-09 06:19:58,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 06:19:58,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:19:58,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:19:58,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:58,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:58,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:19:58,076 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:19:58,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:58,144 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:19:58,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:19:58,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581981058] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:19:58,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:19:58,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2025-03-09 06:19:58,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104936196] [2025-03-09 06:19:58,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:19:58,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 06:19:58,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:58,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 06:19:58,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:19:58,198 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2025-03-09 06:19:58,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 257 flow. Second operand has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 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) [2025-03-09 06:19:58,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:58,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2025-03-09 06:19:58,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:58,656 INFO L124 PetriNetUnfolderBase]: 3515/6816 cut-off events. [2025-03-09 06:19:58,656 INFO L125 PetriNetUnfolderBase]: For 12491/13229 co-relation queries the response was YES. [2025-03-09 06:19:58,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20669 conditions, 6816 events. 3515/6816 cut-off events. For 12491/13229 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 52554 event pairs, 187 based on Foata normal form. 399/7130 useless extension candidates. Maximal degree in co-relation 20634. Up to 1445 conditions per place. [2025-03-09 06:19:58,684 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 135 selfloop transitions, 5 changer transitions 0/156 dead transitions. [2025-03-09 06:19:58,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 156 transitions, 1105 flow [2025-03-09 06:19:58,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:19:58,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:19:58,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2025-03-09 06:19:58,685 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7386363636363636 [2025-03-09 06:19:58,685 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 257 flow. Second operand 6 states and 195 transitions. [2025-03-09 06:19:58,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 156 transitions, 1105 flow [2025-03-09 06:19:58,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 156 transitions, 1096 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:19:58,691 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 288 flow [2025-03-09 06:19:58,691 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2025-03-09 06:19:58,692 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2025-03-09 06:19:58,692 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 288 flow [2025-03-09 06:19:58,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 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) [2025-03-09 06:19:58,692 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:58,692 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:58,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-09 06:19:58,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:58,893 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:58,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:58,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1818785722, now seen corresponding path program 1 times [2025-03-09 06:19:58,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:58,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36992898] [2025-03-09 06:19:58,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:58,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:58,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:19:58,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:19:58,899 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:58,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:58,914 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:19:58,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:58,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36992898] [2025-03-09 06:19:58,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36992898] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:58,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:19:58,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:19:58,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328555890] [2025-03-09 06:19:58,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:58,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:19:58,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:58,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:19:58,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:19:58,920 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2025-03-09 06:19:58,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2025-03-09 06:19:58,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:58,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2025-03-09 06:19:58,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:19:59,395 INFO L124 PetriNetUnfolderBase]: 5001/8505 cut-off events. [2025-03-09 06:19:59,395 INFO L125 PetriNetUnfolderBase]: For 15687/16715 co-relation queries the response was YES. [2025-03-09 06:19:59,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27806 conditions, 8505 events. 5001/8505 cut-off events. For 15687/16715 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 59225 event pairs, 2581 based on Foata normal form. 390/8728 useless extension candidates. Maximal degree in co-relation 27768. Up to 4789 conditions per place. [2025-03-09 06:19:59,434 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 82 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2025-03-09 06:19:59,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 101 transitions, 696 flow [2025-03-09 06:19:59,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:19:59,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:19:59,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2025-03-09 06:19:59,435 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6647727272727273 [2025-03-09 06:19:59,435 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 288 flow. Second operand 4 states and 117 transitions. [2025-03-09 06:19:59,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 101 transitions, 696 flow [2025-03-09 06:19:59,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 101 transitions, 660 flow, removed 13 selfloop flow, removed 3 redundant places. [2025-03-09 06:19:59,445 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 288 flow [2025-03-09 06:19:59,445 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2025-03-09 06:19:59,446 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2025-03-09 06:19:59,446 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 288 flow [2025-03-09 06:19:59,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2025-03-09 06:19:59,446 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:19:59,446 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:19:59,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-09 06:19:59,446 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:19:59,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:19:59,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1619614784, now seen corresponding path program 1 times [2025-03-09 06:19:59,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:19:59,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485321672] [2025-03-09 06:19:59,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:59,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:19:59,451 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:19:59,453 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:19:59,453 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:59,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:59,498 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:19:59,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:19:59,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485321672] [2025-03-09 06:19:59,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485321672] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:19:59,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137478254] [2025-03-09 06:19:59,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:19:59,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:19:59,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:19:59,500 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) [2025-03-09 06:19:59,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 06:19:59,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:19:59,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:19:59,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:19:59,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:19:59,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:19:59,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:19:59,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:19:59,569 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:19:59,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137478254] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:19:59,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:19:59,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-09 06:19:59,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817654291] [2025-03-09 06:19:59,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:19:59,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:19:59,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:19:59,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:19:59,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:19:59,578 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-09 06:19:59,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 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) [2025-03-09 06:19:59,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:19:59,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-09 06:19:59,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:20:00,028 INFO L124 PetriNetUnfolderBase]: 4507/7873 cut-off events. [2025-03-09 06:20:00,028 INFO L125 PetriNetUnfolderBase]: For 15589/16012 co-relation queries the response was YES. [2025-03-09 06:20:00,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25268 conditions, 7873 events. 4507/7873 cut-off events. For 15589/16012 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 56470 event pairs, 999 based on Foata normal form. 198/7823 useless extension candidates. Maximal degree in co-relation 25230. Up to 3212 conditions per place. [2025-03-09 06:20:00,112 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 96 selfloop transitions, 5 changer transitions 0/114 dead transitions. [2025-03-09 06:20:00,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 114 transitions, 787 flow [2025-03-09 06:20:00,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:20:00,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:20:00,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2025-03-09 06:20:00,113 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2025-03-09 06:20:00,113 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 288 flow. Second operand 6 states and 164 transitions. [2025-03-09 06:20:00,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 114 transitions, 787 flow [2025-03-09 06:20:00,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 114 transitions, 773 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:20:00,123 INFO L231 Difference]: Finished difference. Result has 81 places, 56 transitions, 286 flow [2025-03-09 06:20:00,123 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=81, PETRI_TRANSITIONS=56} [2025-03-09 06:20:00,123 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2025-03-09 06:20:00,123 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 56 transitions, 286 flow [2025-03-09 06:20:00,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 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) [2025-03-09 06:20:00,124 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:20:00,124 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:20:00,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-09 06:20:00,324 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,SelfDestructingSolverStorable14 [2025-03-09 06:20:00,324 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:20:00,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:20:00,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1644594424, now seen corresponding path program 1 times [2025-03-09 06:20:00,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:20:00,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649758259] [2025-03-09 06:20:00,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:00,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:20:00,328 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:20:00,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:20:00,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:00,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:00,368 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:20:00,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:20:00,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649758259] [2025-03-09 06:20:00,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649758259] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:20:00,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468621841] [2025-03-09 06:20:00,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:00,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:20:00,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:20:00,371 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) [2025-03-09 06:20:00,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 06:20:00,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:20:00,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:20:00,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:00,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:00,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:20:00,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:20:00,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:20:00,433 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:20:00,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468621841] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:20:00,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:20:00,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-09 06:20:00,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960450233] [2025-03-09 06:20:00,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:20:00,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:20:00,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:20:00,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:20:00,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:20:00,443 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 44 [2025-03-09 06:20:00,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 56 transitions, 286 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:20:00,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:20:00,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 44 [2025-03-09 06:20:00,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:20:00,885 INFO L124 PetriNetUnfolderBase]: 3819/6874 cut-off events. [2025-03-09 06:20:00,885 INFO L125 PetriNetUnfolderBase]: For 14623/14830 co-relation queries the response was YES. [2025-03-09 06:20:00,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22408 conditions, 6874 events. 3819/6874 cut-off events. For 14623/14830 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 50458 event pairs, 187 based on Foata normal form. 228/6810 useless extension candidates. Maximal degree in co-relation 22369. Up to 3648 conditions per place. [2025-03-09 06:20:00,908 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 99 selfloop transitions, 8 changer transitions 0/121 dead transitions. [2025-03-09 06:20:00,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 121 transitions, 901 flow [2025-03-09 06:20:00,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:20:00,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:20:00,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2025-03-09 06:20:00,909 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6325757575757576 [2025-03-09 06:20:00,909 INFO L175 Difference]: Start difference. First operand has 81 places, 56 transitions, 286 flow. Second operand 6 states and 167 transitions. [2025-03-09 06:20:00,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 121 transitions, 901 flow [2025-03-09 06:20:00,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 121 transitions, 893 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:20:00,916 INFO L231 Difference]: Finished difference. Result has 82 places, 55 transitions, 293 flow [2025-03-09 06:20:00,916 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=293, PETRI_PLACES=82, PETRI_TRANSITIONS=55} [2025-03-09 06:20:00,917 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 36 predicate places. [2025-03-09 06:20:00,917 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 55 transitions, 293 flow [2025-03-09 06:20:00,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:20:00,917 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:20:00,917 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:20:00,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 06:20:01,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-09 06:20:01,117 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:20:01,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:20:01,118 INFO L85 PathProgramCache]: Analyzing trace with hash -642971787, now seen corresponding path program 1 times [2025-03-09 06:20:01,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:20:01,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888918292] [2025-03-09 06:20:01,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:01,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:20:01,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:20:01,123 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:20:01,123 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:01,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:01,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:20:01,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:20:01,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888918292] [2025-03-09 06:20:01,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888918292] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:20:01,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258752459] [2025-03-09 06:20:01,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:01,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:20:01,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:20:01,177 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) [2025-03-09 06:20:01,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 06:20:01,211 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:20:01,220 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:20:01,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:01,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:01,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:20:01,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:20:01,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:20:01,282 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:20:01,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:20:01,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258752459] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:20:01,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:20:01,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2025-03-09 06:20:01,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394532633] [2025-03-09 06:20:01,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:20:01,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-09 06:20:01,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:20:01,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-09 06:20:01,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2025-03-09 06:20:01,337 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:20:01,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 55 transitions, 293 flow. Second operand has 14 states, 14 states have (on average 21.642857142857142) internal successors, (303), 14 states have internal predecessors, (303), 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) [2025-03-09 06:20:01,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:20:01,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:20:01,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:20:02,017 INFO L124 PetriNetUnfolderBase]: 4661/8863 cut-off events. [2025-03-09 06:20:02,017 INFO L125 PetriNetUnfolderBase]: For 20308/20722 co-relation queries the response was YES. [2025-03-09 06:20:02,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29715 conditions, 8863 events. 4661/8863 cut-off events. For 20308/20722 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 67541 event pairs, 175 based on Foata normal form. 594/9454 useless extension candidates. Maximal degree in co-relation 29676. Up to 1870 conditions per place. [2025-03-09 06:20:02,061 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 147 selfloop transitions, 20 changer transitions 0/182 dead transitions. [2025-03-09 06:20:02,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 182 transitions, 1351 flow [2025-03-09 06:20:02,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 06:20:02,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 06:20:02,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 349 transitions. [2025-03-09 06:20:02,063 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6609848484848485 [2025-03-09 06:20:02,063 INFO L175 Difference]: Start difference. First operand has 82 places, 55 transitions, 293 flow. Second operand 12 states and 349 transitions. [2025-03-09 06:20:02,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 182 transitions, 1351 flow [2025-03-09 06:20:02,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 182 transitions, 1321 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 06:20:02,084 INFO L231 Difference]: Finished difference. Result has 92 places, 64 transitions, 436 flow [2025-03-09 06:20:02,084 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=436, PETRI_PLACES=92, PETRI_TRANSITIONS=64} [2025-03-09 06:20:02,084 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2025-03-09 06:20:02,084 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 64 transitions, 436 flow [2025-03-09 06:20:02,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.642857142857142) internal successors, (303), 14 states have internal predecessors, (303), 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) [2025-03-09 06:20:02,084 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:20:02,084 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:20:02,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-09 06:20:02,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-09 06:20:02,285 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:20:02,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:20:02,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1537557922, now seen corresponding path program 1 times [2025-03-09 06:20:02,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:20:02,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114363500] [2025-03-09 06:20:02,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:02,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:20:02,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:20:02,291 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:20:02,291 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:02,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:02,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:20:02,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:20:02,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114363500] [2025-03-09 06:20:02,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114363500] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:20:02,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842325828] [2025-03-09 06:20:02,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:02,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:20:02,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:20:02,331 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) [2025-03-09 06:20:02,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 06:20:02,363 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:20:02,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:20:02,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:02,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:02,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:20:02,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:20:02,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:20:02,435 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:20:02,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:20:02,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842325828] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:20:02,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:20:02,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2025-03-09 06:20:02,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722187646] [2025-03-09 06:20:02,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:20:02,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-09 06:20:02,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:20:02,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-09 06:20:02,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2025-03-09 06:20:02,492 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:20:02,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 64 transitions, 436 flow. Second operand has 14 states, 14 states have (on average 21.642857142857142) internal successors, (303), 14 states have internal predecessors, (303), 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) [2025-03-09 06:20:02,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:20:02,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:20:02,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:20:04,666 INFO L124 PetriNetUnfolderBase]: 12859/25293 cut-off events. [2025-03-09 06:20:04,666 INFO L125 PetriNetUnfolderBase]: For 108270/109456 co-relation queries the response was YES. [2025-03-09 06:20:04,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92833 conditions, 25293 events. 12859/25293 cut-off events. For 108270/109456 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 231114 event pairs, 571 based on Foata normal form. 1674/26876 useless extension candidates. Maximal degree in co-relation 92788. Up to 5827 conditions per place. [2025-03-09 06:20:04,792 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 356 selfloop transitions, 54 changer transitions 0/425 dead transitions. [2025-03-09 06:20:04,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 425 transitions, 3448 flow [2025-03-09 06:20:04,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-09 06:20:04,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-03-09 06:20:04,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 748 transitions. [2025-03-09 06:20:04,794 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2025-03-09 06:20:04,794 INFO L175 Difference]: Start difference. First operand has 92 places, 64 transitions, 436 flow. Second operand 24 states and 748 transitions. [2025-03-09 06:20:04,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 425 transitions, 3448 flow [2025-03-09 06:20:04,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 425 transitions, 3319 flow, removed 53 selfloop flow, removed 6 redundant places. [2025-03-09 06:20:04,927 INFO L231 Difference]: Finished difference. Result has 122 places, 110 transitions, 1065 flow [2025-03-09 06:20:04,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1065, PETRI_PLACES=122, PETRI_TRANSITIONS=110} [2025-03-09 06:20:04,927 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 76 predicate places. [2025-03-09 06:20:04,927 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 110 transitions, 1065 flow [2025-03-09 06:20:04,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.642857142857142) internal successors, (303), 14 states have internal predecessors, (303), 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) [2025-03-09 06:20:04,928 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:20:04,928 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:20:04,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-09 06:20:05,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:20:05,129 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:20:05,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:20:05,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1331549010, now seen corresponding path program 1 times [2025-03-09 06:20:05,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:20:05,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687053241] [2025-03-09 06:20:05,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:05,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:20:05,132 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:20:05,135 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:20:05,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:05,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:05,151 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-09 06:20:05,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:20:05,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687053241] [2025-03-09 06:20:05,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687053241] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:20:05,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:20:05,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:20:05,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766105093] [2025-03-09 06:20:05,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:20:05,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:20:05,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:20:05,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:20:05,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:20:05,158 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2025-03-09 06:20:05,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 110 transitions, 1065 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) [2025-03-09 06:20:05,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:20:05,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2025-03-09 06:20:05,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:20:07,992 INFO L124 PetriNetUnfolderBase]: 20427/34219 cut-off events. [2025-03-09 06:20:07,992 INFO L125 PetriNetUnfolderBase]: For 169964/171158 co-relation queries the response was YES. [2025-03-09 06:20:08,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138688 conditions, 34219 events. 20427/34219 cut-off events. For 169964/171158 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 283639 event pairs, 7233 based on Foata normal form. 1188/35029 useless extension candidates. Maximal degree in co-relation 138630. Up to 15315 conditions per place. [2025-03-09 06:20:08,261 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 171 selfloop transitions, 6 changer transitions 0/188 dead transitions. [2025-03-09 06:20:08,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 188 transitions, 2157 flow [2025-03-09 06:20:08,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:20:08,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:20:08,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2025-03-09 06:20:08,262 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6193181818181818 [2025-03-09 06:20:08,262 INFO L175 Difference]: Start difference. First operand has 122 places, 110 transitions, 1065 flow. Second operand 4 states and 109 transitions. [2025-03-09 06:20:08,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 188 transitions, 2157 flow [2025-03-09 06:20:08,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 188 transitions, 1810 flow, removed 145 selfloop flow, removed 8 redundant places. [2025-03-09 06:20:08,783 INFO L231 Difference]: Finished difference. Result has 117 places, 110 transitions, 862 flow [2025-03-09 06:20:08,784 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=862, PETRI_PLACES=117, PETRI_TRANSITIONS=110} [2025-03-09 06:20:08,784 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 71 predicate places. [2025-03-09 06:20:08,784 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 862 flow [2025-03-09 06:20:08,784 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) [2025-03-09 06:20:08,784 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:20:08,784 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:20:08,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-09 06:20:08,784 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:20:08,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:20:08,784 INFO L85 PathProgramCache]: Analyzing trace with hash -557180205, now seen corresponding path program 1 times [2025-03-09 06:20:08,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:20:08,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274096719] [2025-03-09 06:20:08,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:08,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:20:08,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:20:08,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:20:08,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:08,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:08,802 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-09 06:20:08,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:20:08,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274096719] [2025-03-09 06:20:08,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274096719] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:20:08,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:20:08,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:20:08,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054778296] [2025-03-09 06:20:08,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:20:08,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:20:08,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:20:08,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:20:08,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:20:08,806 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2025-03-09 06:20:08,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 110 transitions, 862 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2025-03-09 06:20:08,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:20:08,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2025-03-09 06:20:08,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:20:11,158 INFO L124 PetriNetUnfolderBase]: 15774/26140 cut-off events. [2025-03-09 06:20:11,159 INFO L125 PetriNetUnfolderBase]: For 149659/149659 co-relation queries the response was YES. [2025-03-09 06:20:11,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104079 conditions, 26140 events. 15774/26140 cut-off events. For 149659/149659 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 209055 event pairs, 2818 based on Foata normal form. 858/26839 useless extension candidates. Maximal degree in co-relation 104024. Up to 13905 conditions per place. [2025-03-09 06:20:11,326 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 242 selfloop transitions, 9 changer transitions 0/264 dead transitions. [2025-03-09 06:20:11,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 264 transitions, 2764 flow [2025-03-09 06:20:11,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:20:11,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:20:11,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2025-03-09 06:20:11,327 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2025-03-09 06:20:11,327 INFO L175 Difference]: Start difference. First operand has 117 places, 110 transitions, 862 flow. Second operand 4 states and 110 transitions. [2025-03-09 06:20:11,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 264 transitions, 2764 flow [2025-03-09 06:20:11,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 264 transitions, 2748 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-03-09 06:20:11,514 INFO L231 Difference]: Finished difference. Result has 117 places, 110 transitions, 872 flow [2025-03-09 06:20:11,514 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=872, PETRI_PLACES=117, PETRI_TRANSITIONS=110} [2025-03-09 06:20:11,515 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 71 predicate places. [2025-03-09 06:20:11,515 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 110 transitions, 872 flow [2025-03-09 06:20:11,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2025-03-09 06:20:11,515 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:20:11,515 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:20:11,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-09 06:20:11,515 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:20:11,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:20:11,515 INFO L85 PathProgramCache]: Analyzing trace with hash -620850343, now seen corresponding path program 1 times [2025-03-09 06:20:11,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:20:11,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696404726] [2025-03-09 06:20:11,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:11,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:20:11,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-09 06:20:11,521 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-09 06:20:11,521 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:11,521 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:11,576 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:20:11,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:20:11,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696404726] [2025-03-09 06:20:11,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696404726] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:20:11,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724660273] [2025-03-09 06:20:11,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:11,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:20:11,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:20:11,579 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) [2025-03-09 06:20:11,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 06:20:11,607 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-09 06:20:11,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-09 06:20:11,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:11,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:11,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:20:11,618 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:20:11,697 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:20:11,697 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:20:11,768 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:20:11,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724660273] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:20:11,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:20:11,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2025-03-09 06:20:11,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293608689] [2025-03-09 06:20:11,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:20:11,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-09 06:20:11,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:20:11,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-09 06:20:11,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2025-03-09 06:20:11,769 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:20:11,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 110 transitions, 872 flow. Second operand has 17 states, 17 states have (on average 21.529411764705884) internal successors, (366), 17 states have internal predecessors, (366), 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) [2025-03-09 06:20:11,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:20:11,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:20:11,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:20:14,896 INFO L124 PetriNetUnfolderBase]: 17303/33357 cut-off events. [2025-03-09 06:20:14,896 INFO L125 PetriNetUnfolderBase]: For 182106/182106 co-relation queries the response was YES. [2025-03-09 06:20:15,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128710 conditions, 33357 events. 17303/33357 cut-off events. For 182106/182106 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 309067 event pairs, 615 based on Foata normal form. 1484/34772 useless extension candidates. Maximal degree in co-relation 128654. Up to 10117 conditions per place. [2025-03-09 06:20:15,136 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 330 selfloop transitions, 56 changer transitions 0/401 dead transitions. [2025-03-09 06:20:15,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 401 transitions, 3465 flow [2025-03-09 06:20:15,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-09 06:20:15,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-09 06:20:15,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 649 transitions. [2025-03-09 06:20:15,138 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2025-03-09 06:20:15,138 INFO L175 Difference]: Start difference. First operand has 117 places, 110 transitions, 872 flow. Second operand 21 states and 649 transitions. [2025-03-09 06:20:15,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 401 transitions, 3465 flow [2025-03-09 06:20:15,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 401 transitions, 3241 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-03-09 06:20:15,721 INFO L231 Difference]: Finished difference. Result has 139 places, 126 transitions, 1198 flow [2025-03-09 06:20:15,721 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1198, PETRI_PLACES=139, PETRI_TRANSITIONS=126} [2025-03-09 06:20:15,721 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 93 predicate places. [2025-03-09 06:20:15,721 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 126 transitions, 1198 flow [2025-03-09 06:20:15,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 21.529411764705884) internal successors, (366), 17 states have internal predecessors, (366), 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) [2025-03-09 06:20:15,722 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:20:15,722 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:20:15,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-09 06:20:15,922 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,SelfDestructingSolverStorable20 [2025-03-09 06:20:15,922 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:20:15,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:20:15,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1384304146, now seen corresponding path program 1 times [2025-03-09 06:20:15,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:20:15,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234348897] [2025-03-09 06:20:15,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:15,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:20:15,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-09 06:20:15,930 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 06:20:15,930 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:15,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:15,995 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:20:15,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:20:15,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234348897] [2025-03-09 06:20:15,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234348897] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:20:15,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656953062] [2025-03-09 06:20:15,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:15,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:20:15,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:20:15,997 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) [2025-03-09 06:20:15,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 06:20:16,030 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-09 06:20:16,041 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 06:20:16,041 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:16,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:16,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 06:20:16,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:20:16,150 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:20:16,150 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:20:16,231 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:20:16,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656953062] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:20:16,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:20:16,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2025-03-09 06:20:16,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340054310] [2025-03-09 06:20:16,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:20:16,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-09 06:20:16,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:20:16,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-09 06:20:16,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2025-03-09 06:20:16,232 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:20:16,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 126 transitions, 1198 flow. Second operand has 20 states, 20 states have (on average 21.45) internal successors, (429), 20 states have internal predecessors, (429), 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) [2025-03-09 06:20:16,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:20:16,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:20:16,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:20:23,054 INFO L124 PetriNetUnfolderBase]: 33363/64531 cut-off events. [2025-03-09 06:20:23,055 INFO L125 PetriNetUnfolderBase]: For 632635/632635 co-relation queries the response was YES. [2025-03-09 06:20:23,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255057 conditions, 64531 events. 33363/64531 cut-off events. For 632635/632635 co-relation queries the response was YES. Maximal size of possible extension queue 1702. Compared 647349 event pairs, 1627 based on Foata normal form. 4180/68598 useless extension candidates. Maximal degree in co-relation 254994. Up to 9339 conditions per place. [2025-03-09 06:20:23,635 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 563 selfloop transitions, 124 changer transitions 0/702 dead transitions. [2025-03-09 06:20:23,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 702 transitions, 6147 flow [2025-03-09 06:20:23,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-09 06:20:23,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-03-09 06:20:23,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1156 transitions. [2025-03-09 06:20:23,637 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7100737100737101 [2025-03-09 06:20:23,637 INFO L175 Difference]: Start difference. First operand has 139 places, 126 transitions, 1198 flow. Second operand 37 states and 1156 transitions. [2025-03-09 06:20:23,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 702 transitions, 6147 flow [2025-03-09 06:20:25,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 702 transitions, 6033 flow, removed 37 selfloop flow, removed 12 redundant places. [2025-03-09 06:20:25,614 INFO L231 Difference]: Finished difference. Result has 177 places, 188 transitions, 2324 flow [2025-03-09 06:20:25,614 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2324, PETRI_PLACES=177, PETRI_TRANSITIONS=188} [2025-03-09 06:20:25,614 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 131 predicate places. [2025-03-09 06:20:25,614 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 188 transitions, 2324 flow [2025-03-09 06:20:25,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 21.45) internal successors, (429), 20 states have internal predecessors, (429), 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) [2025-03-09 06:20:25,614 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:20:25,614 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:20:25,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-09 06:20:25,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:20:25,815 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-03-09 06:20:25,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:20:25,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1107482249, now seen corresponding path program 1 times [2025-03-09 06:20:25,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:20:25,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079957569] [2025-03-09 06:20:25,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:25,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:20:25,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-09 06:20:25,822 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 06:20:25,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:25,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:25,890 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:20:25,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:20:25,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079957569] [2025-03-09 06:20:25,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079957569] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:20:25,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381279438] [2025-03-09 06:20:25,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:20:25,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:20:25,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:20:25,894 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) [2025-03-09 06:20:25,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 06:20:25,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-09 06:20:25,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 06:20:25,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:20:25,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:20:25,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 06:20:25,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:20:26,045 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:20:26,046 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:20:26,147 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:20:26,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381279438] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:20:26,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:20:26,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2025-03-09 06:20:26,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048422720] [2025-03-09 06:20:26,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:20:26,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-09 06:20:26,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:20:26,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-09 06:20:26,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2025-03-09 06:20:26,149 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2025-03-09 06:20:26,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 188 transitions, 2324 flow. Second operand has 23 states, 23 states have (on average 21.391304347826086) internal successors, (492), 23 states have internal predecessors, (492), 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) [2025-03-09 06:20:26,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:20:26,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2025-03-09 06:20:26,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:20:41,920 INFO L124 PetriNetUnfolderBase]: 66011/129277 cut-off events. [2025-03-09 06:20:41,920 INFO L125 PetriNetUnfolderBase]: For 1962248/1962248 co-relation queries the response was YES. [2025-03-09 06:20:43,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546998 conditions, 129277 events. 66011/129277 cut-off events. For 1962248/1962248 co-relation queries the response was YES. Maximal size of possible extension queue 3311. Compared 1434023 event pairs, 2111 based on Foata normal form. 4510/133674 useless extension candidates. Maximal degree in co-relation 546918. Up to 16887 conditions per place. [2025-03-09 06:20:43,815 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 622 selfloop transitions, 256 changer transitions 0/893 dead transitions. [2025-03-09 06:20:43,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 893 transitions, 9419 flow [2025-03-09 06:20:43,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-03-09 06:20:43,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2025-03-09 06:20:43,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1222 transitions. [2025-03-09 06:20:43,818 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7121212121212122 [2025-03-09 06:20:43,818 INFO L175 Difference]: Start difference. First operand has 177 places, 188 transitions, 2324 flow. Second operand 39 states and 1222 transitions. [2025-03-09 06:20:43,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 893 transitions, 9419 flow