./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-theta/exponential-64.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-theta/exponential-64.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c5877a70884380b10e463fa3cfc6b55a5014f8a8b2ecd81a270409b479a9f5bc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:58:47,108 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:58:47,193 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:58:47,198 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:58:47,198 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:58:47,228 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:58:47,229 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:58:47,230 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:58:47,231 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:58:47,232 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:58:47,233 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:58:47,234 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:58:47,234 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:58:47,236 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:58:47,237 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:58:47,238 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:58:47,238 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:58:47,238 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:58:47,238 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:58:47,239 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:58:47,239 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:58:47,243 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:58:47,244 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:58:47,244 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:58:47,244 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:58:47,244 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:58:47,244 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:58:47,245 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:58:47,245 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:58:47,245 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:58:47,246 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:58:47,246 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:58:47,246 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:58:47,246 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:58:47,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:58:47,247 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:58:47,247 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:58:47,247 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:58:47,247 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:58:47,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:58:47,248 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:58:47,250 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:58:47,251 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:58:47,251 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:58:47,252 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5877a70884380b10e463fa3cfc6b55a5014f8a8b2ecd81a270409b479a9f5bc [2024-11-17 07:58:47,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:58:47,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:58:47,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:58:47,548 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:58:47,548 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:58:47,550 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/exponential-64.i [2024-11-17 07:58:49,055 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:58:49,321 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:58:49,322 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/exponential-64.i [2024-11-17 07:58:49,344 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f901eba8/df6008411bfe4f20ba24613cfcade6a1/FLAGaab6209fe [2024-11-17 07:58:49,362 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f901eba8/df6008411bfe4f20ba24613cfcade6a1 [2024-11-17 07:58:49,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:58:49,367 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:58:49,368 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:58:49,368 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:58:49,373 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:58:49,373 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:58:49" (1/1) ... [2024-11-17 07:58:49,374 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71ebcf5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:58:49, skipping insertion in model container [2024-11-17 07:58:49,375 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:58:49" (1/1) ... [2024-11-17 07:58:49,434 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:58:49,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:58:49,796 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:58:49,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:58:49,914 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:58:49,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:58:49 WrapperNode [2024-11-17 07:58:49,915 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:58:49,916 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:58:49,916 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:58:49,916 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:58:49,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:58:49" (1/1) ... [2024-11-17 07:58:49,941 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:58:49" (1/1) ... [2024-11-17 07:58:49,972 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 65 [2024-11-17 07:58:49,972 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:58:49,973 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:58:49,973 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:58:49,973 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:58:49,981 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:58:49" (1/1) ... [2024-11-17 07:58:49,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:58:49" (1/1) ... [2024-11-17 07:58:49,984 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:58:49" (1/1) ... [2024-11-17 07:58:49,998 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-17 07:58:49,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:58:49" (1/1) ... [2024-11-17 07:58:49,999 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:58:49" (1/1) ... [2024-11-17 07:58:50,003 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:58:49" (1/1) ... [2024-11-17 07:58:50,004 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:58:49" (1/1) ... [2024-11-17 07:58:50,006 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:58:49" (1/1) ... [2024-11-17 07:58:50,007 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:58:49" (1/1) ... [2024-11-17 07:58:50,010 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:58:50,011 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:58:50,011 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:58:50,012 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:58:50,013 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:58:49" (1/1) ... [2024-11-17 07:58:50,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:58:50,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:58:50,059 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) [2024-11-17 07:58:50,067 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 [2024-11-17 07:58:50,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:58:50,124 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-17 07:58:50,125 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-17 07:58:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-17 07:58:50,125 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-17 07:58:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:58:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:58:50,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:58:50,128 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:58:50,298 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:58:50,301 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:58:50,558 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:58:50,558 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:58:50,708 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:58:50,708 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:58:50,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:58:50 BoogieIcfgContainer [2024-11-17 07:58:50,709 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:58:50,713 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:58:50,713 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:58:50,718 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:58:50,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:58:49" (1/3) ... [2024-11-17 07:58:50,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb934ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:58:50, skipping insertion in model container [2024-11-17 07:58:50,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:58:49" (2/3) ... [2024-11-17 07:58:50,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb934ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:58:50, skipping insertion in model container [2024-11-17 07:58:50,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:58:50" (3/3) ... [2024-11-17 07:58:50,721 INFO L112 eAbstractionObserver]: Analyzing ICFG exponential-64.i [2024-11-17 07:58:50,738 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:58:50,738 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-17 07:58:50,738 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:58:50,790 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 07:58:50,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 31 transitions, 70 flow [2024-11-17 07:58:50,861 INFO L124 PetriNetUnfolderBase]: 6/44 cut-off events. [2024-11-17 07:58:50,861 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:58:50,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 44 events. 6/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 29. Up to 4 conditions per place. [2024-11-17 07:58:50,864 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 31 transitions, 70 flow [2024-11-17 07:58:50,868 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 27 transitions, 61 flow [2024-11-17 07:58:50,877 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:58:50,885 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;@79d66655, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:58:50,885 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-17 07:58:50,895 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:58:50,896 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-17 07:58:50,896 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:58:50,896 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:50,897 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:58:50,898 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-17 07:58:50,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:50,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1674465225, now seen corresponding path program 1 times [2024-11-17 07:58:50,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:50,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877830497] [2024-11-17 07:58:50,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:50,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:51,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:58:51,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:51,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877830497] [2024-11-17 07:58:51,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877830497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:58:51,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:58:51,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:58:51,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273124425] [2024-11-17 07:58:51,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:58:51,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 07:58:51,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:51,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 07:58:51,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 07:58:51,122 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 31 [2024-11-17 07:58:51,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 61 flow. Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 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) [2024-11-17 07:58:51,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:51,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 31 [2024-11-17 07:58:51,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:51,228 INFO L124 PetriNetUnfolderBase]: 78/191 cut-off events. [2024-11-17 07:58:51,230 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:58:51,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 191 events. 78/191 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 810 event pairs, 68 based on Foata normal form. 10/183 useless extension candidates. Maximal degree in co-relation 317. Up to 143 conditions per place. [2024-11-17 07:58:51,235 INFO L140 encePairwiseOnDemand]: 30/31 looper letters, 14 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2024-11-17 07:58:51,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 87 flow [2024-11-17 07:58:51,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 07:58:51,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 07:58:51,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 43 transitions. [2024-11-17 07:58:51,250 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6935483870967742 [2024-11-17 07:58:51,251 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 61 flow. Second operand 2 states and 43 transitions. [2024-11-17 07:58:51,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 87 flow [2024-11-17 07:58:51,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 86 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:58:51,257 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 58 flow [2024-11-17 07:58:51,259 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2024-11-17 07:58:51,263 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2024-11-17 07:58:51,266 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 58 flow [2024-11-17 07:58:51,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 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) [2024-11-17 07:58:51,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:51,267 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:51,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:58:51,267 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-17 07:58:51,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:51,268 INFO L85 PathProgramCache]: Analyzing trace with hash 341784357, now seen corresponding path program 1 times [2024-11-17 07:58:51,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:51,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444392910] [2024-11-17 07:58:51,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:51,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:51,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:58:51,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:51,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444392910] [2024-11-17 07:58:51,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444392910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:58:51,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:58:51,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:58:51,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727733379] [2024-11-17 07:58:51,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:58:51,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:58:51,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:51,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:58:51,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:58:51,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 31 [2024-11-17 07:58:51,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-11-17 07:58:51,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:51,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 31 [2024-11-17 07:58:51,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:51,543 INFO L124 PetriNetUnfolderBase]: 89/230 cut-off events. [2024-11-17 07:58:51,543 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:58:51,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 230 events. 89/230 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1008 event pairs, 20 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 398. Up to 115 conditions per place. [2024-11-17 07:58:51,548 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 18 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2024-11-17 07:58:51,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 108 flow [2024-11-17 07:58:51,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:58:51,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:58:51,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-11-17 07:58:51,551 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6451612903225806 [2024-11-17 07:58:51,551 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 58 flow. Second operand 3 states and 60 transitions. [2024-11-17 07:58:51,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 108 flow [2024-11-17 07:58:51,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:58:51,554 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 66 flow [2024-11-17 07:58:51,554 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2024-11-17 07:58:51,555 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2024-11-17 07:58:51,556 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 66 flow [2024-11-17 07:58:51,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-11-17 07:58:51,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:51,557 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:51,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 07:58:51,559 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-17 07:58:51,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:51,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2053971092, now seen corresponding path program 1 times [2024-11-17 07:58:51,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:51,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896649271] [2024-11-17 07:58:51,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:51,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:51,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:58:51,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:51,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896649271] [2024-11-17 07:58:51,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896649271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:58:51,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:58:51,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:58:51,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353824339] [2024-11-17 07:58:51,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:58:51,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:58:51,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:51,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:58:51,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:58:51,668 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 31 [2024-11-17 07:58:51,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-17 07:58:51,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:51,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 31 [2024-11-17 07:58:51,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:51,774 INFO L124 PetriNetUnfolderBase]: 77/215 cut-off events. [2024-11-17 07:58:51,775 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-17 07:58:51,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 396 conditions, 215 events. 77/215 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 965 event pairs, 8 based on Foata normal form. 18/223 useless extension candidates. Maximal degree in co-relation 390. Up to 94 conditions per place. [2024-11-17 07:58:51,777 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 20 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2024-11-17 07:58:51,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 126 flow [2024-11-17 07:58:51,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:58:51,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:58:51,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-11-17 07:58:51,779 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5887096774193549 [2024-11-17 07:58:51,779 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 66 flow. Second operand 4 states and 73 transitions. [2024-11-17 07:58:51,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 126 flow [2024-11-17 07:58:51,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:58:51,781 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 64 flow [2024-11-17 07:58:51,782 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2024-11-17 07:58:51,782 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2024-11-17 07:58:51,783 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 64 flow [2024-11-17 07:58:51,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-17 07:58:51,783 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:51,783 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:51,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:58:51,784 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-17 07:58:51,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:51,784 INFO L85 PathProgramCache]: Analyzing trace with hash 250008638, now seen corresponding path program 1 times [2024-11-17 07:58:51,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:51,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107555677] [2024-11-17 07:58:51,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:51,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:58:51,801 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 07:58:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:58:51,842 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 07:58:51,843 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 07:58:51,845 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-17 07:58:51,847 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-17 07:58:51,848 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-17 07:58:51,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-17 07:58:51,850 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-17 07:58:51,850 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-17 07:58:51,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:58:51,851 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-17 07:58:51,856 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 07:58:51,857 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 07:58:51,880 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 07:58:51,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 39 transitions, 98 flow [2024-11-17 07:58:51,893 INFO L124 PetriNetUnfolderBase]: 9/72 cut-off events. [2024-11-17 07:58:51,894 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-17 07:58:51,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 72 events. 9/72 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 132 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 61. Up to 6 conditions per place. [2024-11-17 07:58:51,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 39 transitions, 98 flow [2024-11-17 07:58:51,895 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 35 transitions, 88 flow [2024-11-17 07:58:51,899 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:58:51,900 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;@79d66655, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:58:51,900 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-17 07:58:51,907 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:58:51,907 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-17 07:58:51,907 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:58:51,907 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:51,907 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:58:51,908 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-17 07:58:51,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:51,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1466747287, now seen corresponding path program 1 times [2024-11-17 07:58:51,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:51,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28730316] [2024-11-17 07:58:51,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:51,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:51,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:58:51,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:51,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28730316] [2024-11-17 07:58:51,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28730316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:58:51,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:58:51,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:58:51,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349014024] [2024-11-17 07:58:51,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:58:51,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 07:58:51,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:51,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 07:58:51,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 07:58:51,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-11-17 07:58:51,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 88 flow. Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2024-11-17 07:58:51,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:51,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-11-17 07:58:51,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:52,282 INFO L124 PetriNetUnfolderBase]: 1491/2545 cut-off events. [2024-11-17 07:58:52,282 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2024-11-17 07:58:52,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4762 conditions, 2545 events. 1491/2545 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 15276 event pairs, 1400 based on Foata normal form. 91/2482 useless extension candidates. Maximal degree in co-relation 1312. Up to 2096 conditions per place. [2024-11-17 07:58:52,315 INFO L140 encePairwiseOnDemand]: 38/39 looper letters, 20 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2024-11-17 07:58:52,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 34 transitions, 126 flow [2024-11-17 07:58:52,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 07:58:52,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 07:58:52,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 53 transitions. [2024-11-17 07:58:52,317 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6794871794871795 [2024-11-17 07:58:52,318 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 88 flow. Second operand 2 states and 53 transitions. [2024-11-17 07:58:52,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 34 transitions, 126 flow [2024-11-17 07:58:52,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 34 transitions, 125 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:58:52,324 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 85 flow [2024-11-17 07:58:52,324 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=85, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2024-11-17 07:58:52,325 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-11-17 07:58:52,325 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 85 flow [2024-11-17 07:58:52,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2024-11-17 07:58:52,325 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:52,325 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:52,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:58:52,326 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-17 07:58:52,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:52,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1748444332, now seen corresponding path program 1 times [2024-11-17 07:58:52,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:52,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257893446] [2024-11-17 07:58:52,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:52,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:52,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:58:52,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:52,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257893446] [2024-11-17 07:58:52,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257893446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:58:52,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:58:52,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:58:52,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576448392] [2024-11-17 07:58:52,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:58:52,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:58:52,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:52,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:58:52,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:58:52,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 39 [2024-11-17 07:58:52,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-17 07:58:52,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:52,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 39 [2024-11-17 07:58:52,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:52,680 INFO L124 PetriNetUnfolderBase]: 1718/2990 cut-off events. [2024-11-17 07:58:52,680 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-11-17 07:58:52,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5522 conditions, 2990 events. 1718/2990 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 18645 event pairs, 740 based on Foata normal form. 0/2765 useless extension candidates. Maximal degree in co-relation 5516. Up to 2365 conditions per place. [2024-11-17 07:58:52,706 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 27 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2024-11-17 07:58:52,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 159 flow [2024-11-17 07:58:52,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:58:52,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:58:52,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-11-17 07:58:52,711 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2024-11-17 07:58:52,711 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 85 flow. Second operand 3 states and 75 transitions. [2024-11-17 07:58:52,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 159 flow [2024-11-17 07:58:52,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 159 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:58:52,713 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 97 flow [2024-11-17 07:58:52,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-11-17 07:58:52,716 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-11-17 07:58:52,716 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 97 flow [2024-11-17 07:58:52,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-17 07:58:52,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:52,717 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:52,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:58:52,717 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-17 07:58:52,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:52,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1577739487, now seen corresponding path program 1 times [2024-11-17 07:58:52,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:52,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233636955] [2024-11-17 07:58:52,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:52,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:52,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:58:52,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:52,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233636955] [2024-11-17 07:58:52,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233636955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:58:52,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:58:52,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:58:52,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544949547] [2024-11-17 07:58:52,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:58:52,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:58:52,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:52,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:58:52,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:58:52,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-11-17 07:58:52,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:52,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:52,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-11-17 07:58:52,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:53,099 INFO L124 PetriNetUnfolderBase]: 1922/3206 cut-off events. [2024-11-17 07:58:53,100 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-11-17 07:58:53,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6179 conditions, 3206 events. 1922/3206 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 19464 event pairs, 836 based on Foata normal form. 18/3124 useless extension candidates. Maximal degree in co-relation 6171. Up to 2641 conditions per place. [2024-11-17 07:58:53,129 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 31 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-11-17 07:58:53,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 187 flow [2024-11-17 07:58:53,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:58:53,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:58:53,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-11-17 07:58:53,130 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2024-11-17 07:58:53,130 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 97 flow. Second operand 4 states and 92 transitions. [2024-11-17 07:58:53,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 187 flow [2024-11-17 07:58:53,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 185 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:58:53,135 INFO L231 Difference]: Finished difference. Result has 50 places, 36 transitions, 113 flow [2024-11-17 07:58:53,135 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=50, PETRI_TRANSITIONS=36} [2024-11-17 07:58:53,136 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2024-11-17 07:58:53,137 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 36 transitions, 113 flow [2024-11-17 07:58:53,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:53,137 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:53,138 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:53,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 07:58:53,138 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-17 07:58:53,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:53,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1311464812, now seen corresponding path program 1 times [2024-11-17 07:58:53,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:53,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663110707] [2024-11-17 07:58:53,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:53,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:53,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:58:53,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:53,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663110707] [2024-11-17 07:58:53,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663110707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:58:53,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:58:53,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:58:53,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489313949] [2024-11-17 07:58:53,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:58:53,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:58:53,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:53,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:58:53,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:58:53,232 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-11-17 07:58:53,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:53,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:53,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-11-17 07:58:53,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:53,688 INFO L124 PetriNetUnfolderBase]: 2402/3893 cut-off events. [2024-11-17 07:58:53,688 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2024-11-17 07:58:53,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7706 conditions, 3893 events. 2402/3893 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 22671 event pairs, 1856 based on Foata normal form. 90/3818 useless extension candidates. Maximal degree in co-relation 7696. Up to 2729 conditions per place. [2024-11-17 07:58:53,717 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 39 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2024-11-17 07:58:53,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 54 transitions, 233 flow [2024-11-17 07:58:53,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:58:53,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:58:53,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-11-17 07:58:53,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6282051282051282 [2024-11-17 07:58:53,718 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 113 flow. Second operand 4 states and 98 transitions. [2024-11-17 07:58:53,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 54 transitions, 233 flow [2024-11-17 07:58:53,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 54 transitions, 229 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:58:53,721 INFO L231 Difference]: Finished difference. Result has 53 places, 38 transitions, 131 flow [2024-11-17 07:58:53,721 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=53, PETRI_TRANSITIONS=38} [2024-11-17 07:58:53,724 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-11-17 07:58:53,724 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 38 transitions, 131 flow [2024-11-17 07:58:53,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:58:53,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:53,725 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:53,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 07:58:53,725 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-17 07:58:53,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:53,726 INFO L85 PathProgramCache]: Analyzing trace with hash 2056689059, now seen corresponding path program 1 times [2024-11-17 07:58:53,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:53,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345462578] [2024-11-17 07:58:53,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:53,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:53,854 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:58:53,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:53,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345462578] [2024-11-17 07:58:53,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345462578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:58:53,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765373579] [2024-11-17 07:58:53,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:53,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:53,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:58:53,858 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) [2024-11-17 07:58:53,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:58:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:53,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:58:53,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:58:54,002 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:58:54,003 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:58:54,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765373579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:58:54,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:58:54,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:58:54,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90385064] [2024-11-17 07:58:54,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:58:54,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:58:54,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:54,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:58:54,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:58:54,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-11-17 07:58:54,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 38 transitions, 131 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2024-11-17 07:58:54,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:54,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-11-17 07:58:54,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:54,436 INFO L124 PetriNetUnfolderBase]: 2162/3704 cut-off events. [2024-11-17 07:58:54,436 INFO L125 PetriNetUnfolderBase]: For 1140/1140 co-relation queries the response was YES. [2024-11-17 07:58:54,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7956 conditions, 3704 events. 2162/3704 cut-off events. For 1140/1140 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 22952 event pairs, 728 based on Foata normal form. 81/3748 useless extension candidates. Maximal degree in co-relation 7944. Up to 2385 conditions per place. [2024-11-17 07:58:54,467 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 38 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-11-17 07:58:54,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 55 transitions, 249 flow [2024-11-17 07:58:54,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:58:54,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:58:54,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-11-17 07:58:54,469 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-11-17 07:58:54,469 INFO L175 Difference]: Start difference. First operand has 53 places, 38 transitions, 131 flow. Second operand 6 states and 126 transitions. [2024-11-17 07:58:54,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 55 transitions, 249 flow [2024-11-17 07:58:54,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 247 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:58:54,482 INFO L231 Difference]: Finished difference. Result has 56 places, 37 transitions, 135 flow [2024-11-17 07:58:54,482 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=135, PETRI_PLACES=56, PETRI_TRANSITIONS=37} [2024-11-17 07:58:54,482 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2024-11-17 07:58:54,483 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 37 transitions, 135 flow [2024-11-17 07:58:54,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2024-11-17 07:58:54,483 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:54,483 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:54,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-17 07:58:54,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:54,685 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-17 07:58:54,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:54,686 INFO L85 PathProgramCache]: Analyzing trace with hash -667148433, now seen corresponding path program 1 times [2024-11-17 07:58:54,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:54,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854981191] [2024-11-17 07:58:54,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:54,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:54,758 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:58:54,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:54,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854981191] [2024-11-17 07:58:54,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854981191] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:58:54,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470315238] [2024-11-17 07:58:54,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:54,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:54,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:58:54,761 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) [2024-11-17 07:58:54,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:58:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:54,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:58:54,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:58:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:58:54,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:58:54,956 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:58:54,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470315238] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:58:54,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:58:54,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-17 07:58:54,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766393964] [2024-11-17 07:58:54,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:58:54,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:58:54,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:54,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:58:54,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:58:54,985 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-11-17 07:58:54,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 37 transitions, 135 flow. Second operand has 12 states, 12 states have (on average 16.75) internal successors, (201), 12 states have internal predecessors, (201), 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) [2024-11-17 07:58:54,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:54,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-11-17 07:58:54,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:55,406 INFO L124 PetriNetUnfolderBase]: 1946/3650 cut-off events. [2024-11-17 07:58:55,406 INFO L125 PetriNetUnfolderBase]: For 1336/1336 co-relation queries the response was YES. [2024-11-17 07:58:55,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7696 conditions, 3650 events. 1946/3650 cut-off events. For 1336/1336 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 24074 event pairs, 80 based on Foata normal form. 81/3721 useless extension candidates. Maximal degree in co-relation 7684. Up to 1863 conditions per place. [2024-11-17 07:58:55,469 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 51 selfloop transitions, 5 changer transitions 0/68 dead transitions. [2024-11-17 07:58:55,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 319 flow [2024-11-17 07:58:55,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:58:55,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:58:55,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-11-17 07:58:55,471 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5531135531135531 [2024-11-17 07:58:55,472 INFO L175 Difference]: Start difference. First operand has 56 places, 37 transitions, 135 flow. Second operand 7 states and 151 transitions. [2024-11-17 07:58:55,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 319 flow [2024-11-17 07:58:55,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 68 transitions, 306 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-17 07:58:55,481 INFO L231 Difference]: Finished difference. Result has 56 places, 36 transitions, 128 flow [2024-11-17 07:58:55,482 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=128, PETRI_PLACES=56, PETRI_TRANSITIONS=36} [2024-11-17 07:58:55,483 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2024-11-17 07:58:55,484 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 36 transitions, 128 flow [2024-11-17 07:58:55,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.75) internal successors, (201), 12 states have internal predecessors, (201), 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) [2024-11-17 07:58:55,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:55,485 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:55,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 07:58:55,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-17 07:58:55,687 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-17 07:58:55,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:55,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1702234120, now seen corresponding path program 1 times [2024-11-17 07:58:55,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:55,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367946236] [2024-11-17 07:58:55,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:55,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:55,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 07:58:55,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:55,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367946236] [2024-11-17 07:58:55,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367946236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:58:55,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107996728] [2024-11-17 07:58:55,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:55,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:55,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:58:55,783 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) [2024-11-17 07:58:55,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 07:58:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:55,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:58:55,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:58:55,963 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 07:58:55,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:58:56,023 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 07:58:56,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107996728] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:58:56,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:58:56,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-17 07:58:56,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157078183] [2024-11-17 07:58:56,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:58:56,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 07:58:56,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:56,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 07:58:56,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-17 07:58:56,055 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-11-17 07:58:56,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 36 transitions, 128 flow. Second operand has 11 states, 11 states have (on average 15.454545454545455) internal successors, (170), 11 states have internal predecessors, (170), 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) [2024-11-17 07:58:56,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:56,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-11-17 07:58:56,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:56,308 INFO L124 PetriNetUnfolderBase]: 944/1658 cut-off events. [2024-11-17 07:58:56,309 INFO L125 PetriNetUnfolderBase]: For 690/690 co-relation queries the response was YES. [2024-11-17 07:58:56,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3521 conditions, 1658 events. 944/1658 cut-off events. For 690/690 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9338 event pairs, 80 based on Foata normal form. 90/1738 useless extension candidates. Maximal degree in co-relation 3511. Up to 594 conditions per place. [2024-11-17 07:58:56,320 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 41 selfloop transitions, 5 changer transitions 0/53 dead transitions. [2024-11-17 07:58:56,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 53 transitions, 236 flow [2024-11-17 07:58:56,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:58:56,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:58:56,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-11-17 07:58:56,321 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5091575091575091 [2024-11-17 07:58:56,322 INFO L175 Difference]: Start difference. First operand has 56 places, 36 transitions, 128 flow. Second operand 7 states and 139 transitions. [2024-11-17 07:58:56,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 53 transitions, 236 flow [2024-11-17 07:58:56,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 53 transitions, 224 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-17 07:58:56,324 INFO L231 Difference]: Finished difference. Result has 47 places, 26 transitions, 88 flow [2024-11-17 07:58:56,325 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=88, PETRI_PLACES=47, PETRI_TRANSITIONS=26} [2024-11-17 07:58:56,325 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-11-17 07:58:56,326 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 26 transitions, 88 flow [2024-11-17 07:58:56,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.454545454545455) internal successors, (170), 11 states have internal predecessors, (170), 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) [2024-11-17 07:58:56,327 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:56,327 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:56,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 07:58:56,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:58:56,528 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-17 07:58:56,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:56,529 INFO L85 PathProgramCache]: Analyzing trace with hash 2089910164, now seen corresponding path program 1 times [2024-11-17 07:58:56,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:56,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402001829] [2024-11-17 07:58:56,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:56,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:58:56,541 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 07:58:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:58:56,555 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 07:58:56,555 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 07:58:56,555 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-17 07:58:56,556 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-17 07:58:56,556 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-17 07:58:56,556 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-17 07:58:56,556 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-17 07:58:56,556 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-17 07:58:56,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 07:58:56,557 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:56,557 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 07:58:56,558 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-17 07:58:56,584 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 07:58:56,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 47 transitions, 130 flow [2024-11-17 07:58:56,597 INFO L124 PetriNetUnfolderBase]: 12/100 cut-off events. [2024-11-17 07:58:56,597 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-17 07:58:56,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 100 events. 12/100 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 97. Up to 8 conditions per place. [2024-11-17 07:58:56,598 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 47 transitions, 130 flow [2024-11-17 07:58:56,598 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 43 transitions, 119 flow [2024-11-17 07:58:56,600 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:58:56,600 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;@79d66655, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:58:56,600 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-17 07:58:56,602 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:58:56,602 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-17 07:58:56,602 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:58:56,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:56,602 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:58:56,602 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-17 07:58:56,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:56,603 INFO L85 PathProgramCache]: Analyzing trace with hash -76324855, now seen corresponding path program 1 times [2024-11-17 07:58:56,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:56,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624128271] [2024-11-17 07:58:56,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:56,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:56,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:58:56,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:56,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624128271] [2024-11-17 07:58:56,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624128271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:58:56,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:58:56,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:58:56,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690116524] [2024-11-17 07:58:56,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:58:56,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 07:58:56,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:56,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 07:58:56,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 07:58:56,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2024-11-17 07:58:56,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 119 flow. Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 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) [2024-11-17 07:58:56,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:56,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2024-11-17 07:58:56,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:58:59,392 INFO L124 PetriNetUnfolderBase]: 20688/30049 cut-off events. [2024-11-17 07:58:59,392 INFO L125 PetriNetUnfolderBase]: For 2383/2383 co-relation queries the response was YES. [2024-11-17 07:58:59,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57621 conditions, 30049 events. 20688/30049 cut-off events. For 2383/2383 co-relation queries the response was YES. Maximal size of possible extension queue 1170. Compared 204050 event pairs, 19868 based on Foata normal form. 820/29500 useless extension candidates. Maximal degree in co-relation 16771. Up to 26153 conditions per place. [2024-11-17 07:58:59,667 INFO L140 encePairwiseOnDemand]: 46/47 looper letters, 26 selfloop transitions, 0 changer transitions 0/42 dead transitions. [2024-11-17 07:58:59,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 42 transitions, 169 flow [2024-11-17 07:58:59,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 07:58:59,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 07:58:59,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 63 transitions. [2024-11-17 07:58:59,669 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6702127659574468 [2024-11-17 07:58:59,669 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 119 flow. Second operand 2 states and 63 transitions. [2024-11-17 07:58:59,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 42 transitions, 169 flow [2024-11-17 07:58:59,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 42 transitions, 164 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-17 07:58:59,680 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 112 flow [2024-11-17 07:58:59,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=112, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2024-11-17 07:58:59,681 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-11-17 07:58:59,681 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 112 flow [2024-11-17 07:58:59,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 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) [2024-11-17 07:58:59,681 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:58:59,682 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:58:59,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 07:58:59,682 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-17 07:58:59,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:58:59,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1901866811, now seen corresponding path program 1 times [2024-11-17 07:58:59,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:58:59,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377142199] [2024-11-17 07:58:59,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:58:59,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:58:59,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:58:59,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:58:59,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:58:59,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377142199] [2024-11-17 07:58:59,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377142199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:58:59,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:58:59,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:58:59,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897277964] [2024-11-17 07:58:59,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:58:59,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:58:59,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:58:59,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:58:59,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:58:59,712 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-17 07:58:59,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-11-17 07:58:59,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:58:59,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-17 07:58:59,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:59:02,151 INFO L124 PetriNetUnfolderBase]: 23831/33797 cut-off events. [2024-11-17 07:59:02,151 INFO L125 PetriNetUnfolderBase]: For 1243/1243 co-relation queries the response was YES. [2024-11-17 07:59:02,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65005 conditions, 33797 events. 23831/33797 cut-off events. For 1243/1243 co-relation queries the response was YES. Maximal size of possible extension queue 1303. Compared 221592 event pairs, 14672 based on Foata normal form. 0/31952 useless extension candidates. Maximal degree in co-relation 64997. Up to 30067 conditions per place. [2024-11-17 07:59:02,414 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-11-17 07:59:02,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 50 transitions, 198 flow [2024-11-17 07:59:02,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:59:02,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:59:02,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-11-17 07:59:02,415 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-11-17 07:59:02,415 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 112 flow. Second operand 3 states and 87 transitions. [2024-11-17 07:59:02,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 50 transitions, 198 flow [2024-11-17 07:59:02,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 50 transitions, 198 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:59:02,420 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 124 flow [2024-11-17 07:59:02,420 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2024-11-17 07:59:02,421 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-11-17 07:59:02,422 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 124 flow [2024-11-17 07:59:02,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-11-17 07:59:02,422 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:59:02,422 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:59:02,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-17 07:59:02,423 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-17 07:59:02,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:59:02,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1110139474, now seen corresponding path program 1 times [2024-11-17 07:59:02,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:59:02,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655809257] [2024-11-17 07:59:02,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:59:02,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:59:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:59:02,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:59:02,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:59:02,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655809257] [2024-11-17 07:59:02,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655809257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:59:02,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:59:02,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:59:02,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512605073] [2024-11-17 07:59:02,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:59:02,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:59:02,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:59:02,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:59:02,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:59:02,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-11-17 07:59:02,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-11-17 07:59:02,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:59:02,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-11-17 07:59:02,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:59:05,122 INFO L124 PetriNetUnfolderBase]: 26951/37340 cut-off events. [2024-11-17 07:59:05,123 INFO L125 PetriNetUnfolderBase]: For 2062/2062 co-relation queries the response was YES. [2024-11-17 07:59:05,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73687 conditions, 37340 events. 26951/37340 cut-off events. For 2062/2062 co-relation queries the response was YES. Maximal size of possible extension queue 1442. Compared 238153 event pairs, 16712 based on Foata normal form. 18/36367 useless extension candidates. Maximal degree in co-relation 73677. Up to 33988 conditions per place. [2024-11-17 07:59:05,417 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 37 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2024-11-17 07:59:05,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 54 transitions, 226 flow [2024-11-17 07:59:05,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:59:05,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:59:05,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-11-17 07:59:05,419 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2024-11-17 07:59:05,419 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 124 flow. Second operand 4 states and 106 transitions. [2024-11-17 07:59:05,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 54 transitions, 226 flow [2024-11-17 07:59:05,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 54 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:59:05,422 INFO L231 Difference]: Finished difference. Result has 62 places, 44 transitions, 140 flow [2024-11-17 07:59:05,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=62, PETRI_TRANSITIONS=44} [2024-11-17 07:59:05,423 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-11-17 07:59:05,423 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 44 transitions, 140 flow [2024-11-17 07:59:05,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-11-17 07:59:05,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:59:05,424 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:59:05,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-17 07:59:05,424 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-17 07:59:05,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:59:05,425 INFO L85 PathProgramCache]: Analyzing trace with hash -336536370, now seen corresponding path program 1 times [2024-11-17 07:59:05,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:59:05,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408060003] [2024-11-17 07:59:05,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:59:05,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:59:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:59:05,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:59:05,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:59:05,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408060003] [2024-11-17 07:59:05,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408060003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:59:05,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:59:05,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:59:05,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414306188] [2024-11-17 07:59:05,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:59:05,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:59:05,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:59:05,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:59:05,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:59:05,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-11-17 07:59:05,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 44 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:59:05,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:59:05,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-11-17 07:59:05,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:59:08,619 INFO L124 PetriNetUnfolderBase]: 33263/46787 cut-off events. [2024-11-17 07:59:08,619 INFO L125 PetriNetUnfolderBase]: For 2775/2775 co-relation queries the response was YES. [2024-11-17 07:59:08,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92641 conditions, 46787 events. 33263/46787 cut-off events. For 2775/2775 co-relation queries the response was YES. Maximal size of possible extension queue 1286. Compared 306456 event pairs, 26156 based on Foata normal form. 819/46147 useless extension candidates. Maximal degree in co-relation 92629. Up to 34076 conditions per place. [2024-11-17 07:59:09,350 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 53 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2024-11-17 07:59:09,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 304 flow [2024-11-17 07:59:09,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:59:09,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:59:09,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-11-17 07:59:09,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-11-17 07:59:09,353 INFO L175 Difference]: Start difference. First operand has 62 places, 44 transitions, 140 flow. Second operand 4 states and 120 transitions. [2024-11-17 07:59:09,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 70 transitions, 304 flow [2024-11-17 07:59:09,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 300 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:59:09,360 INFO L231 Difference]: Finished difference. Result has 65 places, 46 transitions, 158 flow [2024-11-17 07:59:09,360 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=65, PETRI_TRANSITIONS=46} [2024-11-17 07:59:09,362 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2024-11-17 07:59:09,362 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 46 transitions, 158 flow [2024-11-17 07:59:09,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:59:09,363 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:59:09,363 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:59:09,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-17 07:59:09,363 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-17 07:59:09,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:59:09,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1780236867, now seen corresponding path program 1 times [2024-11-17 07:59:09,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:59:09,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638655635] [2024-11-17 07:59:09,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:59:09,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:59:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:59:09,442 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:59:09,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:59:09,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638655635] [2024-11-17 07:59:09,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638655635] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:59:09,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66932538] [2024-11-17 07:59:09,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:59:09,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:59:09,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:59:09,445 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) [2024-11-17 07:59:09,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 07:59:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:59:09,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:59:09,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:59:09,555 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:59:09,556 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:59:09,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66932538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:59:09,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:59:09,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-17 07:59:09,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032742146] [2024-11-17 07:59:09,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:59:09,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:59:09,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:59:09,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:59:09,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:59:09,567 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-11-17 07:59:09,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 46 transitions, 158 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2024-11-17 07:59:09,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:59:09,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-11-17 07:59:09,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:59:12,303 INFO L124 PetriNetUnfolderBase]: 30107/42044 cut-off events. [2024-11-17 07:59:12,303 INFO L125 PetriNetUnfolderBase]: For 11382/11868 co-relation queries the response was YES. [2024-11-17 07:59:12,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90524 conditions, 42044 events. 30107/42044 cut-off events. For 11382/11868 co-relation queries the response was YES. Maximal size of possible extension queue 1346. Compared 271975 event pairs, 13445 based on Foata normal form. 810/42412 useless extension candidates. Maximal degree in co-relation 90510. Up to 30087 conditions per place. [2024-11-17 07:59:12,708 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 48 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2024-11-17 07:59:12,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 304 flow [2024-11-17 07:59:12,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:59:12,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:59:12,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-11-17 07:59:12,710 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-11-17 07:59:12,710 INFO L175 Difference]: Start difference. First operand has 65 places, 46 transitions, 158 flow. Second operand 6 states and 148 transitions. [2024-11-17 07:59:12,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 304 flow [2024-11-17 07:59:13,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:59:13,197 INFO L231 Difference]: Finished difference. Result has 68 places, 45 transitions, 162 flow [2024-11-17 07:59:13,198 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=68, PETRI_TRANSITIONS=45} [2024-11-17 07:59:13,198 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 13 predicate places. [2024-11-17 07:59:13,198 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 45 transitions, 162 flow [2024-11-17 07:59:13,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2024-11-17 07:59:13,198 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:59:13,198 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:59:13,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-17 07:59:13,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-17 07:59:13,399 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-17 07:59:13,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:59:13,400 INFO L85 PathProgramCache]: Analyzing trace with hash 647232196, now seen corresponding path program 1 times [2024-11-17 07:59:13,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:59:13,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617264285] [2024-11-17 07:59:13,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:59:13,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:59:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:59:13,463 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:59:13,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:59:13,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617264285] [2024-11-17 07:59:13,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617264285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:59:13,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564892929] [2024-11-17 07:59:13,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:59:13,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:59:13,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:59:13,466 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) [2024-11-17 07:59:13,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 07:59:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:59:13,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:59:13,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:59:13,569 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:59:13,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:59:13,625 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:59:13,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564892929] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:59:13,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:59:13,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-17 07:59:13,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944298213] [2024-11-17 07:59:13,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:59:13,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:59:13,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:59:13,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:59:13,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:59:13,648 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-11-17 07:59:13,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 45 transitions, 162 flow. Second operand has 12 states, 12 states have (on average 18.75) internal successors, (225), 12 states have internal predecessors, (225), 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) [2024-11-17 07:59:13,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:59:13,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-11-17 07:59:13,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:59:16,363 INFO L124 PetriNetUnfolderBase]: 26975/42449 cut-off events. [2024-11-17 07:59:16,363 INFO L125 PetriNetUnfolderBase]: For 13522/13522 co-relation queries the response was YES. [2024-11-17 07:59:16,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88293 conditions, 42449 events. 26975/42449 cut-off events. For 13522/13522 co-relation queries the response was YES. Maximal size of possible extension queue 1344. Compared 327020 event pairs, 728 based on Foata normal form. 810/43168 useless extension candidates. Maximal degree in co-relation 88279. Up to 22599 conditions per place. [2024-11-17 07:59:16,679 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 88 selfloop transitions, 7 changer transitions 0/109 dead transitions. [2024-11-17 07:59:16,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 109 transitions, 510 flow [2024-11-17 07:59:16,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 07:59:16,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-17 07:59:16,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-11-17 07:59:16,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-17 07:59:16,681 INFO L175 Difference]: Start difference. First operand has 68 places, 45 transitions, 162 flow. Second operand 9 states and 235 transitions. [2024-11-17 07:59:16,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 109 transitions, 510 flow [2024-11-17 07:59:16,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 109 transitions, 493 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-17 07:59:16,873 INFO L231 Difference]: Finished difference. Result has 70 places, 46 transitions, 167 flow [2024-11-17 07:59:16,873 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=167, PETRI_PLACES=70, PETRI_TRANSITIONS=46} [2024-11-17 07:59:16,873 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-11-17 07:59:16,873 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 46 transitions, 167 flow [2024-11-17 07:59:16,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.75) internal successors, (225), 12 states have internal predecessors, (225), 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) [2024-11-17 07:59:16,874 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:59:16,874 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:59:16,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 07:59:17,078 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,SelfDestructingSolverStorable17 [2024-11-17 07:59:17,079 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-17 07:59:17,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:59:17,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1679877590, now seen corresponding path program 1 times [2024-11-17 07:59:17,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:59:17,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554396521] [2024-11-17 07:59:17,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:59:17,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:59:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:59:17,146 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 07:59:17,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:59:17,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554396521] [2024-11-17 07:59:17,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554396521] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:59:17,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770812382] [2024-11-17 07:59:17,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:59:17,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:59:17,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:59:17,149 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) [2024-11-17 07:59:17,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 07:59:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:59:17,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:59:17,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:59:17,295 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 07:59:17,295 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:59:17,335 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 07:59:17,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770812382] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:59:17,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:59:17,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-17 07:59:17,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458451664] [2024-11-17 07:59:17,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:59:17,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 07:59:17,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:59:17,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 07:59:17,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-17 07:59:17,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-11-17 07:59:17,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 46 transitions, 167 flow. Second operand has 11 states, 11 states have (on average 17.454545454545453) internal successors, (192), 11 states have internal predecessors, (192), 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) [2024-11-17 07:59:17,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:59:17,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-11-17 07:59:17,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:59:20,611 INFO L124 PetriNetUnfolderBase]: 28889/42881 cut-off events. [2024-11-17 07:59:20,611 INFO L125 PetriNetUnfolderBase]: For 11418/11418 co-relation queries the response was YES. [2024-11-17 07:59:20,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90187 conditions, 42881 events. 28889/42881 cut-off events. For 11418/11418 co-relation queries the response was YES. Maximal size of possible extension queue 1352. Compared 301645 event pairs, 2672 based on Foata normal form. 90/42718 useless extension candidates. Maximal degree in co-relation 90175. Up to 22600 conditions per place. [2024-11-17 07:59:20,886 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 67 selfloop transitions, 7 changer transitions 0/87 dead transitions. [2024-11-17 07:59:20,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 87 transitions, 397 flow [2024-11-17 07:59:20,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:59:20,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:59:20,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-11-17 07:59:20,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5440729483282675 [2024-11-17 07:59:20,887 INFO L175 Difference]: Start difference. First operand has 70 places, 46 transitions, 167 flow. Second operand 7 states and 179 transitions. [2024-11-17 07:59:20,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 87 transitions, 397 flow [2024-11-17 07:59:21,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 87 transitions, 383 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-17 07:59:21,056 INFO L231 Difference]: Finished difference. Result has 74 places, 47 transitions, 183 flow [2024-11-17 07:59:21,056 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=183, PETRI_PLACES=74, PETRI_TRANSITIONS=47} [2024-11-17 07:59:21,057 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 19 predicate places. [2024-11-17 07:59:21,057 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 47 transitions, 183 flow [2024-11-17 07:59:21,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.454545454545453) internal successors, (192), 11 states have internal predecessors, (192), 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) [2024-11-17 07:59:21,057 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:59:21,057 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:59:21,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-17 07:59:21,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:59:21,258 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-17 07:59:21,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:59:21,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1144632762, now seen corresponding path program 1 times [2024-11-17 07:59:21,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:59:21,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446390829] [2024-11-17 07:59:21,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:59:21,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:59:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:59:21,274 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 07:59:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 07:59:21,296 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 07:59:21,297 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 07:59:21,297 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-17 07:59:21,297 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-17 07:59:21,297 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-17 07:59:21,297 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-17 07:59:21,297 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-17 07:59:21,297 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-17 07:59:21,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-17 07:59:21,297 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:59:21,298 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 07:59:21,298 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-17 07:59:21,323 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 07:59:21,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 55 transitions, 166 flow [2024-11-17 07:59:21,332 INFO L124 PetriNetUnfolderBase]: 15/128 cut-off events. [2024-11-17 07:59:21,332 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-17 07:59:21,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 128 events. 15/128 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 240 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 135. Up to 10 conditions per place. [2024-11-17 07:59:21,333 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 55 transitions, 166 flow [2024-11-17 07:59:21,334 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 51 transitions, 154 flow [2024-11-17 07:59:21,335 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:59:21,335 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;@79d66655, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:59:21,335 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-17 07:59:21,336 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:59:21,337 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2024-11-17 07:59:21,337 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:59:21,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:59:21,337 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:59:21,337 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-17 07:59:21,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:59:21,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1550765225, now seen corresponding path program 1 times [2024-11-17 07:59:21,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:59:21,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759828502] [2024-11-17 07:59:21,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:59:21,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:59:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:59:21,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:59:21,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:59:21,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759828502] [2024-11-17 07:59:21,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759828502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:59:21,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:59:21,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:59:21,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197650201] [2024-11-17 07:59:21,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:59:21,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 07:59:21,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:59:21,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 07:59:21,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 07:59:21,348 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2024-11-17 07:59:21,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 51 transitions, 154 flow. Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:59:21,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:59:21,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2024-11-17 07:59:21,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand