./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.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 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:17:21,346 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:17:21,401 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:17:21,405 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:17:21,406 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:17:21,432 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:17:21,432 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:17:21,433 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:17:21,433 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:17:21,434 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:17:21,434 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:17:21,434 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:17:21,435 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:17:21,435 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:17:21,435 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:17:21,436 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:17:21,436 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:17:21,436 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:17:21,438 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:17:21,438 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:17:21,440 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:17:21,440 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:17:21,440 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:17:21,440 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:17:21,440 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:17:21,441 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:17:21,441 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:17:21,441 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:17:21,441 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:17:21,441 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:17:21,441 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:17:21,442 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:17:21,442 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:17:21,442 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:17:21,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:17:21,442 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:17:21,442 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:17:21,443 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:17:21,443 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:17:21,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:17:21,443 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:17:21,444 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:17:21,444 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:17:21,445 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:17:21,445 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 [2024-11-10 22:17:21,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:17:21,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:17:21,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:17:21,661 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:17:21,661 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:17:21,662 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2024-11-10 22:17:22,823 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:17:23,016 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:17:23,018 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2024-11-10 22:17:23,031 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1084df48/c644d909fa844b4185278618d5d5b5d5/FLAGa302d2b04 [2024-11-10 22:17:23,043 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1084df48/c644d909fa844b4185278618d5d5b5d5 [2024-11-10 22:17:23,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:17:23,048 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:17:23,051 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:17:23,052 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:17:23,056 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:17:23,057 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:17:23" (1/1) ... [2024-11-10 22:17:23,057 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@212fdd15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:23, skipping insertion in model container [2024-11-10 22:17:23,058 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:17:23" (1/1) ... [2024-11-10 22:17:23,094 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:17:23,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:17:23,413 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:17:23,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:17:23,485 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:17:23,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:23 WrapperNode [2024-11-10 22:17:23,486 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:17:23,487 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:17:23,487 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:17:23,487 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:17:23,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:23" (1/1) ... [2024-11-10 22:17:23,499 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:23" (1/1) ... [2024-11-10 22:17:23,514 INFO L138 Inliner]: procedures = 165, calls = 24, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 106 [2024-11-10 22:17:23,514 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:17:23,515 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:17:23,515 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:17:23,515 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:17:23,522 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:23" (1/1) ... [2024-11-10 22:17:23,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:23" (1/1) ... [2024-11-10 22:17:23,526 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:23" (1/1) ... [2024-11-10 22:17:23,534 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-10 22:17:23,535 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:23" (1/1) ... [2024-11-10 22:17:23,535 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:23" (1/1) ... [2024-11-10 22:17:23,538 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:23" (1/1) ... [2024-11-10 22:17:23,539 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:23" (1/1) ... [2024-11-10 22:17:23,540 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:23" (1/1) ... [2024-11-10 22:17:23,540 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:23" (1/1) ... [2024-11-10 22:17:23,542 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:17:23,543 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:17:23,543 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:17:23,543 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:17:23,543 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:23" (1/1) ... [2024-11-10 22:17:23,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:17:23,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:23,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 22:17:23,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 22:17:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2024-11-10 22:17:23,613 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2024-11-10 22:17:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 22:17:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:17:23,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:17:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:17:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 22:17:23,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:17:23,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:17:23,616 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:17:23,716 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:17:23,718 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:17:23,886 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:17:23,887 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:17:24,020 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:17:24,020 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:17:24,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:17:24 BoogieIcfgContainer [2024-11-10 22:17:24,020 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:17:24,022 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:17:24,022 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:17:24,025 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:17:24,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:17:23" (1/3) ... [2024-11-10 22:17:24,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f8ab96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:17:24, skipping insertion in model container [2024-11-10 22:17:24,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:17:23" (2/3) ... [2024-11-10 22:17:24,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f8ab96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:17:24, skipping insertion in model container [2024-11-10 22:17:24,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:17:24" (3/3) ... [2024-11-10 22:17:24,027 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2024-11-10 22:17:24,038 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:17:24,038 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-10 22:17:24,038 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:17:24,074 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 22:17:24,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 47 transitions, 98 flow [2024-11-10 22:17:24,120 INFO L124 PetriNetUnfolderBase]: 8/46 cut-off events. [2024-11-10 22:17:24,120 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:17:24,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 46 events. 8/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 98 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-11-10 22:17:24,124 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 47 transitions, 98 flow [2024-11-10 22:17:24,128 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 46 transitions, 95 flow [2024-11-10 22:17:24,137 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:17:24,145 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;@45605ca0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:17:24,145 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-10 22:17:24,154 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:17:24,156 INFO L124 PetriNetUnfolderBase]: 5/27 cut-off events. [2024-11-10 22:17:24,156 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:17:24,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:24,157 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:24,157 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-10 22:17:24,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:24,161 INFO L85 PathProgramCache]: Analyzing trace with hash -590588586, now seen corresponding path program 1 times [2024-11-10 22:17:24,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:24,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636065912] [2024-11-10 22:17:24,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:24,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:24,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:24,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:24,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636065912] [2024-11-10 22:17:24,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636065912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:24,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:17:24,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:17:24,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590943623] [2024-11-10 22:17:24,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:24,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:17:24,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:24,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:17:24,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:17:24,507 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-10 22:17:24,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 46 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:24,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:24,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-10 22:17:24,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:24,677 INFO L124 PetriNetUnfolderBase]: 198/478 cut-off events. [2024-11-10 22:17:24,678 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:17:24,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840 conditions, 478 events. 198/478 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2300 event pairs, 15 based on Foata normal form. 87/502 useless extension candidates. Maximal degree in co-relation 831. Up to 244 conditions per place. [2024-11-10 22:17:24,684 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 46 selfloop transitions, 8 changer transitions 1/72 dead transitions. [2024-11-10 22:17:24,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 72 transitions, 257 flow [2024-11-10 22:17:24,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:17:24,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:17:24,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-11-10 22:17:24,696 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6978723404255319 [2024-11-10 22:17:24,697 INFO L175 Difference]: Start difference. First operand has 42 places, 46 transitions, 95 flow. Second operand 5 states and 164 transitions. [2024-11-10 22:17:24,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 72 transitions, 257 flow [2024-11-10 22:17:24,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 72 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:17:24,704 INFO L231 Difference]: Finished difference. Result has 47 places, 48 transitions, 152 flow [2024-11-10 22:17:24,705 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=47, PETRI_TRANSITIONS=48} [2024-11-10 22:17:24,709 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2024-11-10 22:17:24,709 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 48 transitions, 152 flow [2024-11-10 22:17:24,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:24,710 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:24,710 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:24,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:17:24,711 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-10 22:17:24,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:24,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1237288902, now seen corresponding path program 1 times [2024-11-10 22:17:24,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:24,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949216461] [2024-11-10 22:17:24,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:24,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:24,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:24,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:24,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949216461] [2024-11-10 22:17:24,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949216461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:24,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:17:24,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:17:24,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960958927] [2024-11-10 22:17:24,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:24,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:17:24,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:24,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:17:24,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:17:24,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-11-10 22:17:24,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 48 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:24,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:24,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-11-10 22:17:24,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:24,941 INFO L124 PetriNetUnfolderBase]: 214/543 cut-off events. [2024-11-10 22:17:24,942 INFO L125 PetriNetUnfolderBase]: For 234/241 co-relation queries the response was YES. [2024-11-10 22:17:24,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1191 conditions, 543 events. 214/543 cut-off events. For 234/241 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2699 event pairs, 48 based on Foata normal form. 13/531 useless extension candidates. Maximal degree in co-relation 1177. Up to 287 conditions per place. [2024-11-10 22:17:24,946 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 53 selfloop transitions, 4 changer transitions 1/77 dead transitions. [2024-11-10 22:17:24,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 77 transitions, 358 flow [2024-11-10 22:17:24,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:17:24,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:17:24,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-11-10 22:17:24,948 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6914893617021277 [2024-11-10 22:17:24,948 INFO L175 Difference]: Start difference. First operand has 47 places, 48 transitions, 152 flow. Second operand 4 states and 130 transitions. [2024-11-10 22:17:24,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 77 transitions, 358 flow [2024-11-10 22:17:24,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 358 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:17:24,951 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 192 flow [2024-11-10 22:17:24,951 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2024-11-10 22:17:24,952 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2024-11-10 22:17:24,952 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 192 flow [2024-11-10 22:17:24,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:24,952 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:24,952 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:24,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 22:17:24,953 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-10 22:17:24,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:24,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1274906355, now seen corresponding path program 1 times [2024-11-10 22:17:24,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:24,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563339748] [2024-11-10 22:17:24,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:24,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:25,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:25,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:25,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563339748] [2024-11-10 22:17:25,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563339748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:25,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:17:25,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:17:25,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107093965] [2024-11-10 22:17:25,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:25,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:17:25,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:25,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:17:25,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:17:25,032 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 47 [2024-11-10 22:17:25,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:25,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:25,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 47 [2024-11-10 22:17:25,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:25,095 INFO L124 PetriNetUnfolderBase]: 97/322 cut-off events. [2024-11-10 22:17:25,095 INFO L125 PetriNetUnfolderBase]: For 228/236 co-relation queries the response was YES. [2024-11-10 22:17:25,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 723 conditions, 322 events. 97/322 cut-off events. For 228/236 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1493 event pairs, 27 based on Foata normal form. 11/324 useless extension candidates. Maximal degree in co-relation 706. Up to 111 conditions per place. [2024-11-10 22:17:25,097 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 28 selfloop transitions, 5 changer transitions 3/57 dead transitions. [2024-11-10 22:17:25,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 282 flow [2024-11-10 22:17:25,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:17:25,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:17:25,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-11-10 22:17:25,098 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6737588652482269 [2024-11-10 22:17:25,099 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 192 flow. Second operand 3 states and 95 transitions. [2024-11-10 22:17:25,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 282 flow [2024-11-10 22:17:25,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 273 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:17:25,100 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 160 flow [2024-11-10 22:17:25,101 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-11-10 22:17:25,102 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2024-11-10 22:17:25,103 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 160 flow [2024-11-10 22:17:25,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:25,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:25,103 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:25,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 22:17:25,103 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-10 22:17:25,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:25,104 INFO L85 PathProgramCache]: Analyzing trace with hash -438765633, now seen corresponding path program 1 times [2024-11-10 22:17:25,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:25,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13945333] [2024-11-10 22:17:25,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:25,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:25,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:25,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:25,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13945333] [2024-11-10 22:17:25,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13945333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:17:25,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27001111] [2024-11-10 22:17:25,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:25,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:25,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:25,193 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:17:25,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:17:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:25,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:17:25,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:25,358 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:25,358 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:17:25,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27001111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:25,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:17:25,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:17:25,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237309053] [2024-11-10 22:17:25,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:25,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:17:25,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:25,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:17:25,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:17:25,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-10 22:17:25,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:25,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:25,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-10 22:17:25,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:25,532 INFO L124 PetriNetUnfolderBase]: 151/438 cut-off events. [2024-11-10 22:17:25,532 INFO L125 PetriNetUnfolderBase]: For 329/346 co-relation queries the response was YES. [2024-11-10 22:17:25,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 438 events. 151/438 cut-off events. For 329/346 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1928 event pairs, 17 based on Foata normal form. 13/439 useless extension candidates. Maximal degree in co-relation 1053. Up to 119 conditions per place. [2024-11-10 22:17:25,537 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 60 selfloop transitions, 19 changer transitions 4/98 dead transitions. [2024-11-10 22:17:25,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 98 transitions, 529 flow [2024-11-10 22:17:25,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:17:25,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:17:25,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-11-10 22:17:25,543 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5446808510638298 [2024-11-10 22:17:25,543 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 160 flow. Second operand 10 states and 256 transitions. [2024-11-10 22:17:25,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 98 transitions, 529 flow [2024-11-10 22:17:25,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 98 transitions, 512 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:17:25,547 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 301 flow [2024-11-10 22:17:25,547 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=301, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2024-11-10 22:17:25,548 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2024-11-10 22:17:25,548 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 301 flow [2024-11-10 22:17:25,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:25,549 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:25,549 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:25,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:17:25,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:25,754 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-10 22:17:25,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:25,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1771891303, now seen corresponding path program 1 times [2024-11-10 22:17:25,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:25,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682579353] [2024-11-10 22:17:25,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:25,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:25,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:25,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:25,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682579353] [2024-11-10 22:17:25,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682579353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:25,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:17:25,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:17:25,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627947421] [2024-11-10 22:17:25,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:25,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:17:25,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:25,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:17:25,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:17:25,806 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-10 22:17:25,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 301 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:25,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:25,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-10 22:17:25,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:25,907 INFO L124 PetriNetUnfolderBase]: 180/525 cut-off events. [2024-11-10 22:17:25,908 INFO L125 PetriNetUnfolderBase]: For 1059/1084 co-relation queries the response was YES. [2024-11-10 22:17:25,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1466 conditions, 525 events. 180/525 cut-off events. For 1059/1084 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2373 event pairs, 60 based on Foata normal form. 9/529 useless extension candidates. Maximal degree in co-relation 1441. Up to 221 conditions per place. [2024-11-10 22:17:25,911 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 51 selfloop transitions, 11 changer transitions 0/78 dead transitions. [2024-11-10 22:17:25,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 78 transitions, 562 flow [2024-11-10 22:17:25,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:17:25,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:17:25,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-11-10 22:17:25,913 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-11-10 22:17:25,913 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 301 flow. Second operand 4 states and 108 transitions. [2024-11-10 22:17:25,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 78 transitions, 562 flow [2024-11-10 22:17:25,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 78 transitions, 531 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-11-10 22:17:25,918 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 342 flow [2024-11-10 22:17:25,920 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=342, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-11-10 22:17:25,920 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2024-11-10 22:17:25,921 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 342 flow [2024-11-10 22:17:25,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:25,921 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:25,922 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:25,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:17:25,922 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-10 22:17:25,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:25,925 INFO L85 PathProgramCache]: Analyzing trace with hash -716832512, now seen corresponding path program 1 times [2024-11-10 22:17:25,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:25,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828172155] [2024-11-10 22:17:25,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:25,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 22:17:25,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:25,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828172155] [2024-11-10 22:17:25,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828172155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:25,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:17:25,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:17:25,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731701586] [2024-11-10 22:17:25,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:25,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:17:25,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:25,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:17:25,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:17:25,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-11-10 22:17:25,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:25,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:25,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-11-10 22:17:25,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:26,030 INFO L124 PetriNetUnfolderBase]: 175/538 cut-off events. [2024-11-10 22:17:26,031 INFO L125 PetriNetUnfolderBase]: For 1210/1221 co-relation queries the response was YES. [2024-11-10 22:17:26,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1511 conditions, 538 events. 175/538 cut-off events. For 1210/1221 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2465 event pairs, 71 based on Foata normal form. 11/543 useless extension candidates. Maximal degree in co-relation 1485. Up to 249 conditions per place. [2024-11-10 22:17:26,034 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 36 selfloop transitions, 9 changer transitions 0/67 dead transitions. [2024-11-10 22:17:26,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 67 transitions, 473 flow [2024-11-10 22:17:26,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:17:26,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:17:26,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-11-10 22:17:26,035 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6453900709219859 [2024-11-10 22:17:26,035 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 342 flow. Second operand 3 states and 91 transitions. [2024-11-10 22:17:26,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 67 transitions, 473 flow [2024-11-10 22:17:26,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 67 transitions, 461 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-10 22:17:26,039 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 359 flow [2024-11-10 22:17:26,039 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=359, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2024-11-10 22:17:26,039 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2024-11-10 22:17:26,039 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 359 flow [2024-11-10 22:17:26,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:26,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:26,040 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:26,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:17:26,040 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-10 22:17:26,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:26,041 INFO L85 PathProgramCache]: Analyzing trace with hash 905944727, now seen corresponding path program 1 times [2024-11-10 22:17:26,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:26,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16181215] [2024-11-10 22:17:26,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:26,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:26,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:26,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:26,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16181215] [2024-11-10 22:17:26,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16181215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:26,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:17:26,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:17:26,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201796721] [2024-11-10 22:17:26,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:26,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:17:26,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:26,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:17:26,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 22:17:26,136 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-10 22:17:26,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 359 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:26,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:26,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-10 22:17:26,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:26,287 INFO L124 PetriNetUnfolderBase]: 229/659 cut-off events. [2024-11-10 22:17:26,287 INFO L125 PetriNetUnfolderBase]: For 2021/2049 co-relation queries the response was YES. [2024-11-10 22:17:26,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1994 conditions, 659 events. 229/659 cut-off events. For 2021/2049 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3060 event pairs, 48 based on Foata normal form. 19/672 useless extension candidates. Maximal degree in co-relation 1966. Up to 297 conditions per place. [2024-11-10 22:17:26,290 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 63 selfloop transitions, 13 changer transitions 7/96 dead transitions. [2024-11-10 22:17:26,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 96 transitions, 740 flow [2024-11-10 22:17:26,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 22:17:26,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 22:17:26,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-11-10 22:17:26,291 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-11-10 22:17:26,291 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 359 flow. Second operand 8 states and 187 transitions. [2024-11-10 22:17:26,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 96 transitions, 740 flow [2024-11-10 22:17:26,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 96 transitions, 719 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-10 22:17:26,295 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 432 flow [2024-11-10 22:17:26,295 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=432, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2024-11-10 22:17:26,296 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 33 predicate places. [2024-11-10 22:17:26,296 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 432 flow [2024-11-10 22:17:26,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:26,296 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:26,296 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:26,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:17:26,297 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-10 22:17:26,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:26,297 INFO L85 PathProgramCache]: Analyzing trace with hash -579678801, now seen corresponding path program 1 times [2024-11-10 22:17:26,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:26,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108377738] [2024-11-10 22:17:26,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:26,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:26,349 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:26,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:26,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108377738] [2024-11-10 22:17:26,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108377738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:17:26,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198943945] [2024-11-10 22:17:26,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:26,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:26,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:26,352 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:17:26,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:17:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:26,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:17:26,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:26,444 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:26,445 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:17:26,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198943945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:26,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:17:26,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:17:26,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448624825] [2024-11-10 22:17:26,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:26,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:17:26,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:26,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:17:26,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:17:26,455 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-11-10 22:17:26,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 432 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:26,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:26,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-11-10 22:17:26,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:26,598 INFO L124 PetriNetUnfolderBase]: 218/649 cut-off events. [2024-11-10 22:17:26,598 INFO L125 PetriNetUnfolderBase]: For 1621/1633 co-relation queries the response was YES. [2024-11-10 22:17:26,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1877 conditions, 649 events. 218/649 cut-off events. For 1621/1633 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2965 event pairs, 20 based on Foata normal form. 28/654 useless extension candidates. Maximal degree in co-relation 1845. Up to 233 conditions per place. [2024-11-10 22:17:26,602 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 59 selfloop transitions, 12 changer transitions 5/97 dead transitions. [2024-11-10 22:17:26,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 97 transitions, 746 flow [2024-11-10 22:17:26,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:17:26,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:17:26,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2024-11-10 22:17:26,619 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6347517730496454 [2024-11-10 22:17:26,620 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 432 flow. Second operand 6 states and 179 transitions. [2024-11-10 22:17:26,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 97 transitions, 746 flow [2024-11-10 22:17:26,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 97 transitions, 736 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-10 22:17:26,624 INFO L231 Difference]: Finished difference. Result has 77 places, 61 transitions, 444 flow [2024-11-10 22:17:26,624 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=444, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2024-11-10 22:17:26,624 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 35 predicate places. [2024-11-10 22:17:26,625 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 444 flow [2024-11-10 22:17:26,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:26,625 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:26,625 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-10 22:17:26,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 22:17:26,825 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,SelfDestructingSolverStorable7 [2024-11-10 22:17:26,827 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-10 22:17:26,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:26,828 INFO L85 PathProgramCache]: Analyzing trace with hash -790173435, now seen corresponding path program 1 times [2024-11-10 22:17:26,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:26,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787974540] [2024-11-10 22:17:26,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:26,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:26,891 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:26,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:26,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787974540] [2024-11-10 22:17:26,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787974540] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:17:26,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918807153] [2024-11-10 22:17:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:26,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:26,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:26,894 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:17:26,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:17:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:26,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:17:26,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:26,990 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:26,991 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:17:27,041 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:27,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918807153] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:17:27,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:17:27,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 22:17:27,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588648226] [2024-11-10 22:17:27,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:17:27,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:17:27,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:27,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:17:27,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:17:27,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-11-10 22:17:27,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 61 transitions, 444 flow. Second operand has 12 states, 12 states have (on average 23.333333333333332) internal successors, (280), 12 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:27,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:27,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-11-10 22:17:27,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:27,341 INFO L124 PetriNetUnfolderBase]: 484/1368 cut-off events. [2024-11-10 22:17:27,341 INFO L125 PetriNetUnfolderBase]: For 4839/4855 co-relation queries the response was YES. [2024-11-10 22:17:27,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4366 conditions, 1368 events. 484/1368 cut-off events. For 4839/4855 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 7586 event pairs, 64 based on Foata normal form. 53/1407 useless extension candidates. Maximal degree in co-relation 4334. Up to 369 conditions per place. [2024-11-10 22:17:27,349 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 113 selfloop transitions, 21 changer transitions 22/177 dead transitions. [2024-11-10 22:17:27,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 177 transitions, 1455 flow [2024-11-10 22:17:27,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:17:27,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:17:27,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 317 transitions. [2024-11-10 22:17:27,351 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.674468085106383 [2024-11-10 22:17:27,351 INFO L175 Difference]: Start difference. First operand has 77 places, 61 transitions, 444 flow. Second operand 10 states and 317 transitions. [2024-11-10 22:17:27,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 177 transitions, 1455 flow [2024-11-10 22:17:27,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 177 transitions, 1430 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-10 22:17:27,359 INFO L231 Difference]: Finished difference. Result has 88 places, 77 transitions, 686 flow [2024-11-10 22:17:27,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=686, PETRI_PLACES=88, PETRI_TRANSITIONS=77} [2024-11-10 22:17:27,360 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 46 predicate places. [2024-11-10 22:17:27,360 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 77 transitions, 686 flow [2024-11-10 22:17:27,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.333333333333332) internal successors, (280), 12 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:27,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:27,360 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:27,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:17:27,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:27,561 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-10 22:17:27,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:27,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1453558677, now seen corresponding path program 1 times [2024-11-10 22:17:27,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:27,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611379086] [2024-11-10 22:17:27,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:27,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:27,658 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:27,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:27,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611379086] [2024-11-10 22:17:27,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611379086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:17:27,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:17:27,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 22:17:27,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885925859] [2024-11-10 22:17:27,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:17:27,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:17:27,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:27,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:17:27,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 22:17:27,678 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-10 22:17:27,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 77 transitions, 686 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:27,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:27,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-10 22:17:27,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:27,879 INFO L124 PetriNetUnfolderBase]: 584/1584 cut-off events. [2024-11-10 22:17:27,879 INFO L125 PetriNetUnfolderBase]: For 9253/9290 co-relation queries the response was YES. [2024-11-10 22:17:27,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5729 conditions, 1584 events. 584/1584 cut-off events. For 9253/9290 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 9068 event pairs, 58 based on Foata normal form. 38/1615 useless extension candidates. Maximal degree in co-relation 5692. Up to 502 conditions per place. [2024-11-10 22:17:27,889 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 76 selfloop transitions, 50 changer transitions 0/138 dead transitions. [2024-11-10 22:17:27,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 138 transitions, 1534 flow [2024-11-10 22:17:27,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 22:17:27,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 22:17:27,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-11-10 22:17:27,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4787234042553192 [2024-11-10 22:17:27,890 INFO L175 Difference]: Start difference. First operand has 88 places, 77 transitions, 686 flow. Second operand 8 states and 180 transitions. [2024-11-10 22:17:27,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 138 transitions, 1534 flow [2024-11-10 22:17:27,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 138 transitions, 1506 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-10 22:17:27,901 INFO L231 Difference]: Finished difference. Result has 96 places, 96 transitions, 1151 flow [2024-11-10 22:17:27,901 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1151, PETRI_PLACES=96, PETRI_TRANSITIONS=96} [2024-11-10 22:17:27,902 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 54 predicate places. [2024-11-10 22:17:27,902 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 96 transitions, 1151 flow [2024-11-10 22:17:27,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:27,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:27,903 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:27,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 22:17:27,903 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-10 22:17:27,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:27,904 INFO L85 PathProgramCache]: Analyzing trace with hash 648627386, now seen corresponding path program 1 times [2024-11-10 22:17:27,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:27,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537636679] [2024-11-10 22:17:27,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:27,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:27,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:27,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537636679] [2024-11-10 22:17:27,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537636679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:17:27,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972206155] [2024-11-10 22:17:27,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:27,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:27,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:27,988 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:17:27,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:17:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:28,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:17:28,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:28,098 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:28,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:17:28,136 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:28,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972206155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:17:28,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:17:28,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-10 22:17:28,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194902556] [2024-11-10 22:17:28,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:17:28,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:17:28,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:28,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:17:28,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:17:28,171 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-10 22:17:28,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 96 transitions, 1151 flow. Second operand has 12 states, 12 states have (on average 18.5) internal successors, (222), 12 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:28,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:28,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-10 22:17:28,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:28,571 INFO L124 PetriNetUnfolderBase]: 715/1981 cut-off events. [2024-11-10 22:17:28,572 INFO L125 PetriNetUnfolderBase]: For 17167/17244 co-relation queries the response was YES. [2024-11-10 22:17:28,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7894 conditions, 1981 events. 715/1981 cut-off events. For 17167/17244 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 11026 event pairs, 95 based on Foata normal form. 104/2075 useless extension candidates. Maximal degree in co-relation 7851. Up to 455 conditions per place. [2024-11-10 22:17:28,583 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 111 selfloop transitions, 87 changer transitions 31/241 dead transitions. [2024-11-10 22:17:28,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 241 transitions, 3036 flow [2024-11-10 22:17:28,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-10 22:17:28,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-10 22:17:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 443 transitions. [2024-11-10 22:17:28,585 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44883485309017224 [2024-11-10 22:17:28,585 INFO L175 Difference]: Start difference. First operand has 96 places, 96 transitions, 1151 flow. Second operand 21 states and 443 transitions. [2024-11-10 22:17:28,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 241 transitions, 3036 flow [2024-11-10 22:17:28,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 241 transitions, 2828 flow, removed 71 selfloop flow, removed 3 redundant places. [2024-11-10 22:17:28,602 INFO L231 Difference]: Finished difference. Result has 116 places, 131 transitions, 1844 flow [2024-11-10 22:17:28,603 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1844, PETRI_PLACES=116, PETRI_TRANSITIONS=131} [2024-11-10 22:17:28,603 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 74 predicate places. [2024-11-10 22:17:28,603 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 131 transitions, 1844 flow [2024-11-10 22:17:28,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.5) internal successors, (222), 12 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:28,603 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:28,603 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 2, 1, 1, 1, 1] [2024-11-10 22:17:28,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 22:17:28,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:28,804 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-10 22:17:28,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:28,804 INFO L85 PathProgramCache]: Analyzing trace with hash 189968238, now seen corresponding path program 1 times [2024-11-10 22:17:28,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:28,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491958229] [2024-11-10 22:17:28,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:28,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:28,914 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 44 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:17:28,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:28,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491958229] [2024-11-10 22:17:28,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491958229] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:17:28,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297485645] [2024-11-10 22:17:28,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:28,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:28,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:28,917 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:17:28,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:17:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:28,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 22:17:28,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:29,043 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 44 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:17:29,044 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:17:29,137 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 44 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:17:29,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297485645] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:17:29,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:17:29,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-10 22:17:29,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527037009] [2024-11-10 22:17:29,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:17:29,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 22:17:29,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:29,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 22:17:29,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-10 22:17:29,172 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-10 22:17:29,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 131 transitions, 1844 flow. Second operand has 18 states, 18 states have (on average 20.72222222222222) internal successors, (373), 18 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:29,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:29,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-10 22:17:29,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:29,671 INFO L124 PetriNetUnfolderBase]: 719/2180 cut-off events. [2024-11-10 22:17:29,671 INFO L125 PetriNetUnfolderBase]: For 19231/19315 co-relation queries the response was YES. [2024-11-10 22:17:29,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9059 conditions, 2180 events. 719/2180 cut-off events. For 19231/19315 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 13025 event pairs, 256 based on Foata normal form. 19/2188 useless extension candidates. Maximal degree in co-relation 9012. Up to 1016 conditions per place. [2024-11-10 22:17:29,685 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 224 selfloop transitions, 75 changer transitions 10/321 dead transitions. [2024-11-10 22:17:29,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 321 transitions, 3973 flow [2024-11-10 22:17:29,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-10 22:17:29,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-10 22:17:29,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 744 transitions. [2024-11-10 22:17:29,688 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-11-10 22:17:29,688 INFO L175 Difference]: Start difference. First operand has 116 places, 131 transitions, 1844 flow. Second operand 31 states and 744 transitions. [2024-11-10 22:17:29,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 321 transitions, 3973 flow [2024-11-10 22:17:29,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 321 transitions, 3672 flow, removed 82 selfloop flow, removed 8 redundant places. [2024-11-10 22:17:29,714 INFO L231 Difference]: Finished difference. Result has 148 places, 170 transitions, 2455 flow [2024-11-10 22:17:29,714 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1648, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2455, PETRI_PLACES=148, PETRI_TRANSITIONS=170} [2024-11-10 22:17:29,715 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 106 predicate places. [2024-11-10 22:17:29,715 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 170 transitions, 2455 flow [2024-11-10 22:17:29,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 20.72222222222222) internal successors, (373), 18 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:29,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:29,715 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-11-10 22:17:29,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 22:17:29,919 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,SelfDestructingSolverStorable11 [2024-11-10 22:17:29,920 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-10 22:17:29,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:29,920 INFO L85 PathProgramCache]: Analyzing trace with hash 2145274126, now seen corresponding path program 2 times [2024-11-10 22:17:29,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:29,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450733308] [2024-11-10 22:17:29,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:29,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:30,055 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:30,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:30,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450733308] [2024-11-10 22:17:30,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450733308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:17:30,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857535108] [2024-11-10 22:17:30,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:17:30,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:30,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:30,057 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:17:30,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:17:30,125 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:17:30,126 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:17:30,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 22:17:30,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:30,190 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:30,190 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:17:30,342 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:30,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857535108] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:17:30,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:17:30,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-10 22:17:30,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379413476] [2024-11-10 22:17:30,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:17:30,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-10 22:17:30,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:30,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-10 22:17:30,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-10 22:17:30,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-11-10 22:17:30,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 170 transitions, 2455 flow. Second operand has 24 states, 24 states have (on average 23.416666666666668) internal successors, (562), 24 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:30,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:30,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-11-10 22:17:30,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:31,446 INFO L124 PetriNetUnfolderBase]: 1857/5649 cut-off events. [2024-11-10 22:17:31,447 INFO L125 PetriNetUnfolderBase]: For 46007/46163 co-relation queries the response was YES. [2024-11-10 22:17:31,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21755 conditions, 5649 events. 1857/5649 cut-off events. For 46007/46163 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 35771 event pairs, 115 based on Foata normal form. 341/5948 useless extension candidates. Maximal degree in co-relation 21698. Up to 719 conditions per place. [2024-11-10 22:17:31,483 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 456 selfloop transitions, 135 changer transitions 96/709 dead transitions. [2024-11-10 22:17:31,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 709 transitions, 9704 flow [2024-11-10 22:17:31,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-10 22:17:31,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-10 22:17:31,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 694 transitions. [2024-11-10 22:17:31,484 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6711798839458414 [2024-11-10 22:17:31,485 INFO L175 Difference]: Start difference. First operand has 148 places, 170 transitions, 2455 flow. Second operand 22 states and 694 transitions. [2024-11-10 22:17:31,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 709 transitions, 9704 flow [2024-11-10 22:17:31,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 709 transitions, 9459 flow, removed 73 selfloop flow, removed 4 redundant places. [2024-11-10 22:17:31,555 INFO L231 Difference]: Finished difference. Result has 175 places, 244 transitions, 4025 flow [2024-11-10 22:17:31,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2329, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4025, PETRI_PLACES=175, PETRI_TRANSITIONS=244} [2024-11-10 22:17:31,556 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 133 predicate places. [2024-11-10 22:17:31,556 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 244 transitions, 4025 flow [2024-11-10 22:17:31,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 23.416666666666668) internal successors, (562), 24 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:31,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:31,556 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 7, 7, 7, 4, 1, 1, 1, 1] [2024-11-10 22:17:31,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 22:17:31,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:31,761 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-10 22:17:31,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:31,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1682279598, now seen corresponding path program 2 times [2024-11-10 22:17:31,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:31,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160255186] [2024-11-10 22:17:31,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:31,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:32,101 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 232 proven. 266 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-10 22:17:32,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:32,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160255186] [2024-11-10 22:17:32,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160255186] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:17:32,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561463935] [2024-11-10 22:17:32,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:17:32,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:32,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:32,108 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:17:32,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 22:17:32,200 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:17:32,201 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:17:32,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-10 22:17:32,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:32,330 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 40 proven. 443 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-10 22:17:32,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:17:32,604 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 40 proven. 443 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-10 22:17:32,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561463935] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:17:32,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:17:32,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2024-11-10 22:17:32,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887492384] [2024-11-10 22:17:32,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:17:32,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-10 22:17:32,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:32,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-10 22:17:32,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2024-11-10 22:17:32,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-10 22:17:32,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 244 transitions, 4025 flow. Second operand has 34 states, 34 states have (on average 20.676470588235293) internal successors, (703), 34 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:32,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:32,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-10 22:17:32,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:34,312 INFO L124 PetriNetUnfolderBase]: 2135/6405 cut-off events. [2024-11-10 22:17:34,312 INFO L125 PetriNetUnfolderBase]: For 67296/67530 co-relation queries the response was YES. [2024-11-10 22:17:34,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27624 conditions, 6405 events. 2135/6405 cut-off events. For 67296/67530 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 41729 event pairs, 902 based on Foata normal form. 45/6411 useless extension candidates. Maximal degree in co-relation 27557. Up to 3223 conditions per place. [2024-11-10 22:17:34,354 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 488 selfloop transitions, 151 changer transitions 26/677 dead transitions. [2024-11-10 22:17:34,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 677 transitions, 9111 flow [2024-11-10 22:17:34,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-10 22:17:34,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2024-11-10 22:17:34,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 1602 transitions. [2024-11-10 22:17:34,359 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5087329310892347 [2024-11-10 22:17:34,359 INFO L175 Difference]: Start difference. First operand has 175 places, 244 transitions, 4025 flow. Second operand 67 states and 1602 transitions. [2024-11-10 22:17:34,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 677 transitions, 9111 flow [2024-11-10 22:17:34,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 677 transitions, 8712 flow, removed 139 selfloop flow, removed 9 redundant places. [2024-11-10 22:17:34,460 INFO L231 Difference]: Finished difference. Result has 250 places, 324 transitions, 5700 flow [2024-11-10 22:17:34,460 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3756, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=5700, PETRI_PLACES=250, PETRI_TRANSITIONS=324} [2024-11-10 22:17:34,461 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 208 predicate places. [2024-11-10 22:17:34,461 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 324 transitions, 5700 flow [2024-11-10 22:17:34,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 20.676470588235293) internal successors, (703), 34 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:34,461 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:34,461 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 8, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:34,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 22:17:34,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:34,663 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-10 22:17:34,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:34,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1877367192, now seen corresponding path program 1 times [2024-11-10 22:17:34,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:34,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779957648] [2024-11-10 22:17:34,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:34,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:34,876 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 236 proven. 42 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-11-10 22:17:34,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:34,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779957648] [2024-11-10 22:17:34,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779957648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:17:34,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178591982] [2024-11-10 22:17:34,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:34,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:34,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:34,879 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:17:34,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 22:17:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:34,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 22:17:34,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:35,027 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 236 proven. 37 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2024-11-10 22:17:35,027 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:17:35,109 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 236 proven. 37 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2024-11-10 22:17:35,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178591982] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:17:35,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:17:35,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2024-11-10 22:17:35,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549614623] [2024-11-10 22:17:35,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:17:35,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-10 22:17:35,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:35,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-10 22:17:35,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-11-10 22:17:35,136 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-10 22:17:35,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 324 transitions, 5700 flow. Second operand has 16 states, 16 states have (on average 19.25) internal successors, (308), 16 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:35,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:35,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-10 22:17:35,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:37,479 INFO L124 PetriNetUnfolderBase]: 3553/10788 cut-off events. [2024-11-10 22:17:37,479 INFO L125 PetriNetUnfolderBase]: For 115627/115928 co-relation queries the response was YES. [2024-11-10 22:17:37,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45643 conditions, 10788 events. 3553/10788 cut-off events. For 115627/115928 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 78587 event pairs, 719 based on Foata normal form. 248/11004 useless extension candidates. Maximal degree in co-relation 45555. Up to 2291 conditions per place. [2024-11-10 22:17:37,564 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 387 selfloop transitions, 331 changer transitions 18/748 dead transitions. [2024-11-10 22:17:37,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 748 transitions, 11886 flow [2024-11-10 22:17:37,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-10 22:17:37,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-10 22:17:37,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 776 transitions. [2024-11-10 22:17:37,567 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44623346751006326 [2024-11-10 22:17:37,567 INFO L175 Difference]: Start difference. First operand has 250 places, 324 transitions, 5700 flow. Second operand 37 states and 776 transitions. [2024-11-10 22:17:37,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 748 transitions, 11886 flow [2024-11-10 22:17:37,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 748 transitions, 11432 flow, removed 185 selfloop flow, removed 25 redundant places. [2024-11-10 22:17:37,853 INFO L231 Difference]: Finished difference. Result has 264 places, 508 transitions, 9261 flow [2024-11-10 22:17:37,854 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5050, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9261, PETRI_PLACES=264, PETRI_TRANSITIONS=508} [2024-11-10 22:17:37,854 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 222 predicate places. [2024-11-10 22:17:37,854 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 508 transitions, 9261 flow [2024-11-10 22:17:37,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.25) internal successors, (308), 16 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:37,854 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:37,855 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 7, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:17:37,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 22:17:38,055 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,SelfDestructingSolverStorable14 [2024-11-10 22:17:38,055 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-10 22:17:38,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:38,056 INFO L85 PathProgramCache]: Analyzing trace with hash 887406193, now seen corresponding path program 2 times [2024-11-10 22:17:38,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:38,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329877734] [2024-11-10 22:17:38,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:38,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:38,277 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 262 proven. 83 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-10 22:17:38,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:38,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329877734] [2024-11-10 22:17:38,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329877734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:17:38,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575164548] [2024-11-10 22:17:38,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:17:38,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:38,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:38,280 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:17:38,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 22:17:38,392 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 22:17:38,392 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:17:38,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 22:17:38,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 76 proven. 221 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-10 22:17:38,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:17:38,671 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 76 proven. 221 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-10 22:17:38,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575164548] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:17:38,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:17:38,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-10 22:17:38,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098097677] [2024-11-10 22:17:38,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:17:38,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-10 22:17:38,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:38,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-10 22:17:38,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2024-11-10 22:17:38,710 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-10 22:17:38,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 508 transitions, 9261 flow. Second operand has 24 states, 24 states have (on average 19.0) internal successors, (456), 24 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:38,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:38,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-10 22:17:38,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:17:43,158 INFO L124 PetriNetUnfolderBase]: 5963/17916 cut-off events. [2024-11-10 22:17:43,158 INFO L125 PetriNetUnfolderBase]: For 225051/225483 co-relation queries the response was YES. [2024-11-10 22:17:43,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80982 conditions, 17916 events. 5963/17916 cut-off events. For 225051/225483 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 149691 event pairs, 765 based on Foata normal form. 218/18127 useless extension candidates. Maximal degree in co-relation 80887. Up to 2286 conditions per place. [2024-11-10 22:17:43,301 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 327 selfloop transitions, 844 changer transitions 17/1200 dead transitions. [2024-11-10 22:17:43,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 1200 transitions, 21202 flow [2024-11-10 22:17:43,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-10 22:17:43,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-11-10 22:17:43,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 1150 transitions. [2024-11-10 22:17:43,304 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42926465098917505 [2024-11-10 22:17:43,304 INFO L175 Difference]: Start difference. First operand has 264 places, 508 transitions, 9261 flow. Second operand 57 states and 1150 transitions. [2024-11-10 22:17:43,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 1200 transitions, 21202 flow [2024-11-10 22:17:43,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 1200 transitions, 20808 flow, removed 110 selfloop flow, removed 9 redundant places. [2024-11-10 22:17:43,995 INFO L231 Difference]: Finished difference. Result has 315 places, 893 transitions, 18229 flow [2024-11-10 22:17:43,995 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8848, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=454, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=18229, PETRI_PLACES=315, PETRI_TRANSITIONS=893} [2024-11-10 22:17:43,996 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 273 predicate places. [2024-11-10 22:17:43,996 INFO L471 AbstractCegarLoop]: Abstraction has has 315 places, 893 transitions, 18229 flow [2024-11-10 22:17:43,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 19.0) internal successors, (456), 24 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:43,996 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:17:43,996 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1] [2024-11-10 22:17:44,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 22:17:44,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-10 22:17:44,197 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-10 22:17:44,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:17:44,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1193441298, now seen corresponding path program 3 times [2024-11-10 22:17:44,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:17:44,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884598051] [2024-11-10 22:17:44,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:17:44,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:17:44,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:17:44,561 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 0 proven. 605 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:44,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:17:44,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884598051] [2024-11-10 22:17:44,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884598051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:17:44,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339535378] [2024-11-10 22:17:44,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 22:17:44,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:17:44,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:17:44,563 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:17:44,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 22:17:44,685 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-10 22:17:44,685 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:17:44,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-10 22:17:44,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:17:44,807 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 0 proven. 605 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:44,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:17:45,222 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 0 proven. 605 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:17:45,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339535378] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:17:45,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:17:45,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2024-11-10 22:17:45,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055689335] [2024-11-10 22:17:45,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:17:45,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-10 22:17:45,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:17:45,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-10 22:17:45,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2024-11-10 22:17:45,271 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-11-10 22:17:45,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 893 transitions, 18229 flow. Second operand has 48 states, 48 states have (on average 23.458333333333332) internal successors, (1126), 48 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:17:45,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:17:45,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-11-10 22:17:45,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:18:01,732 INFO L124 PetriNetUnfolderBase]: 14546/45563 cut-off events. [2024-11-10 22:18:01,732 INFO L125 PetriNetUnfolderBase]: For 723074/723879 co-relation queries the response was YES. [2024-11-10 22:18:02,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207974 conditions, 45563 events. 14546/45563 cut-off events. For 723074/723879 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 389690 event pairs, 644 based on Foata normal form. 2270/47500 useless extension candidates. Maximal degree in co-relation 207877. Up to 5274 conditions per place. [2024-11-10 22:18:02,251 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 3657 selfloop transitions, 1417 changer transitions 742/5836 dead transitions. [2024-11-10 22:18:02,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 5836 transitions, 116531 flow [2024-11-10 22:18:02,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-10 22:18:02,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-10 22:18:02,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 1456 transitions. [2024-11-10 22:18:02,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6734505087881592 [2024-11-10 22:18:02,253 INFO L175 Difference]: Start difference. First operand has 315 places, 893 transitions, 18229 flow. Second operand 46 states and 1456 transitions. [2024-11-10 22:18:02,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 5836 transitions, 116531 flow [2024-11-10 22:18:05,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 5836 transitions, 114106 flow, removed 963 selfloop flow, removed 18 redundant places. [2024-11-10 22:18:05,077 INFO L231 Difference]: Finished difference. Result has 366 places, 1761 transitions, 41930 flow [2024-11-10 22:18:05,078 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=17922, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=893, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=614, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=41930, PETRI_PLACES=366, PETRI_TRANSITIONS=1761} [2024-11-10 22:18:05,078 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 324 predicate places. [2024-11-10 22:18:05,078 INFO L471 AbstractCegarLoop]: Abstraction has has 366 places, 1761 transitions, 41930 flow [2024-11-10 22:18:05,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 23.458333333333332) internal successors, (1126), 48 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:18:05,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:18:05,079 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 23, 23, 23, 23, 23, 23, 22, 17, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:18:05,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-10 22:18:05,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-10 22:18:05,279 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-10 22:18:05,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:18:05,280 INFO L85 PathProgramCache]: Analyzing trace with hash 200294665, now seen corresponding path program 3 times [2024-11-10 22:18:05,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:18:05,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664252042] [2024-11-10 22:18:05,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:18:05,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:18:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:18:05,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 968 proven. 192 refuted. 0 times theorem prover too weak. 1147 trivial. 0 not checked. [2024-11-10 22:18:05,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:18:05,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664252042] [2024-11-10 22:18:05,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664252042] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:18:05,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069059234] [2024-11-10 22:18:05,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 22:18:05,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:18:05,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:18:05,638 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:18:05,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 22:18:05,805 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-10 22:18:05,805 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:18:05,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-10 22:18:05,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:18:05,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 88 proven. 985 refuted. 0 times theorem prover too weak. 1234 trivial. 0 not checked. [2024-11-10 22:18:05,977 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:18:06,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 88 proven. 985 refuted. 0 times theorem prover too weak. 1234 trivial. 0 not checked. [2024-11-10 22:18:06,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069059234] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:18:06,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:18:06,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 27 [2024-11-10 22:18:06,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410233048] [2024-11-10 22:18:06,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:18:06,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-10 22:18:06,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:18:06,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-10 22:18:06,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2024-11-10 22:18:06,309 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-10 22:18:06,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 1761 transitions, 41930 flow. Second operand has 28 states, 28 states have (on average 19.071428571428573) internal successors, (534), 28 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:18:06,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:18:06,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-10 22:18:06,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand