./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 3061b6dc 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.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:10:42,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:10:42,858 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:10:42,862 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:10:42,863 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:10:42,896 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:10:42,896 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:10:42,897 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:10:42,898 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:10:42,901 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:10:42,902 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:10:42,902 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:10:42,903 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:10:42,903 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:10:42,903 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:10:42,903 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:10:42,904 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:10:42,904 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:10:42,904 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:10:42,904 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:10:42,904 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:10:42,907 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:10:42,907 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:10:42,907 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:10:42,908 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:10:42,908 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:10:42,908 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:10:42,908 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:10:42,909 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:10:42,909 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:10:42,909 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:10:42,909 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:10:42,909 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:10:42,910 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:10:42,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:10:42,911 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:10:42,911 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:10:42,911 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:10:42,911 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:10:42,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:10:42,912 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:10:42,912 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:10:42,913 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:10:42,913 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:10:42,913 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5877a70884380b10e463fa3cfc6b55a5014f8a8b2ecd81a270409b479a9f5bc [2024-11-19 14:10:43,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:10:43,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:10:43,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:10:43,226 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:10:43,226 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:10:43,227 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/exponential-64.i [2024-11-19 14:10:44,587 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:10:44,879 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:10:44,880 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/exponential-64.i [2024-11-19 14:10:44,898 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc9768ad8/41cac54f10ab47ceac37a4fa10da4b7c/FLAGf460ba816 [2024-11-19 14:10:45,169 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc9768ad8/41cac54f10ab47ceac37a4fa10da4b7c [2024-11-19 14:10:45,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:10:45,173 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:10:45,174 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:10:45,175 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:10:45,181 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:10:45,181 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:10:45" (1/1) ... [2024-11-19 14:10:45,184 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35eca1b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:10:45, skipping insertion in model container [2024-11-19 14:10:45,184 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:10:45" (1/1) ... [2024-11-19 14:10:45,228 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:10:45,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:10:45,637 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:10:45,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:10:45,730 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:10:45,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:10:45 WrapperNode [2024-11-19 14:10:45,731 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:10:45,732 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:10:45,732 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:10:45,732 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:10:45,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:10:45" (1/1) ... [2024-11-19 14:10:45,752 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:10:45" (1/1) ... [2024-11-19 14:10:45,775 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 67 [2024-11-19 14:10:45,776 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:10:45,777 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:10:45,777 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:10:45,777 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:10:45,787 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:10:45" (1/1) ... [2024-11-19 14:10:45,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:10:45" (1/1) ... [2024-11-19 14:10:45,792 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:10:45" (1/1) ... [2024-11-19 14:10:45,810 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]. [2024-11-19 14:10:45,811 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:10:45" (1/1) ... [2024-11-19 14:10:45,811 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:10:45" (1/1) ... [2024-11-19 14:10:45,819 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:10:45" (1/1) ... [2024-11-19 14:10:45,822 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:10:45" (1/1) ... [2024-11-19 14:10:45,824 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:10:45" (1/1) ... [2024-11-19 14:10:45,825 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:10:45" (1/1) ... [2024-11-19 14:10:45,827 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:10:45,828 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:10:45,830 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:10:45,830 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:10:45,831 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:10:45" (1/1) ... [2024-11-19 14:10:45,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:10:45,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:10:45,870 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) [2024-11-19 14:10:45,873 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 [2024-11-19 14:10:45,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:10:45,929 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-19 14:10:45,929 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-19 14:10:45,929 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-19 14:10:45,929 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-19 14:10:45,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:10:45,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:10:45,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:10:45,932 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:10:46,135 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:10:46,137 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:10:46,329 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:10:46,329 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:10:46,428 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:10:46,428 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 14:10:46,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:10:46 BoogieIcfgContainer [2024-11-19 14:10:46,429 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:10:46,431 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:10:46,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:10:46,437 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:10:46,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:10:45" (1/3) ... [2024-11-19 14:10:46,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@128d4e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:10:46, skipping insertion in model container [2024-11-19 14:10:46,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:10:45" (2/3) ... [2024-11-19 14:10:46,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@128d4e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:10:46, skipping insertion in model container [2024-11-19 14:10:46,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:10:46" (3/3) ... [2024-11-19 14:10:46,441 INFO L112 eAbstractionObserver]: Analyzing ICFG exponential-64.i [2024-11-19 14:10:46,458 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:10:46,458 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-19 14:10:46,458 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:10:46,496 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 14:10:46,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 25 transitions, 58 flow [2024-11-19 14:10:46,562 INFO L124 PetriNetUnfolderBase]: 2/32 cut-off events. [2024-11-19 14:10:46,562 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:10:46,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 32 events. 2/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 48 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 23. Up to 4 conditions per place. [2024-11-19 14:10:46,565 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 25 transitions, 58 flow [2024-11-19 14:10:46,568 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 23 transitions, 53 flow [2024-11-19 14:10:46,578 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:10:46,586 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;@539e8c5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:10:46,587 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-19 14:10:46,592 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:10:46,596 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-19 14:10:46,596 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:10:46,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:46,597 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-19 14:10:46,598 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:10:46,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:46,607 INFO L85 PathProgramCache]: Analyzing trace with hash 7174277, now seen corresponding path program 1 times [2024-11-19 14:10:46,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:46,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357142500] [2024-11-19 14:10:46,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:46,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:46,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:10:46,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:46,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357142500] [2024-11-19 14:10:46,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357142500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:10:46,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:10:46,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:10:46,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741985237] [2024-11-19 14:10:46,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:10:46,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:10:46,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:46,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:10:46,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:10:46,921 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 25 [2024-11-19 14:10:46,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:46,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:46,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 25 [2024-11-19 14:10:46,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:47,000 INFO L124 PetriNetUnfolderBase]: 27/91 cut-off events. [2024-11-19 14:10:47,000 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:10:47,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 91 events. 27/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 354 event pairs, 7 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 142. Up to 37 conditions per place. [2024-11-19 14:10:47,004 INFO L140 encePairwiseOnDemand]: 22/25 looper letters, 13 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2024-11-19 14:10:47,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 26 transitions, 89 flow [2024-11-19 14:10:47,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:10:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:10:47,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-19 14:10:47,014 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6933333333333334 [2024-11-19 14:10:47,016 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 53 flow. Second operand 3 states and 52 transitions. [2024-11-19 14:10:47,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 26 transitions, 89 flow [2024-11-19 14:10:47,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:10:47,021 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 60 flow [2024-11-19 14:10:47,022 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2024-11-19 14:10:47,025 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 2 predicate places. [2024-11-19 14:10:47,026 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 60 flow [2024-11-19 14:10:47,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:47,026 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:47,026 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:47,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:10:47,027 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:10:47,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:47,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1019706740, now seen corresponding path program 1 times [2024-11-19 14:10:47,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:47,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410165948] [2024-11-19 14:10:47,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:47,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:47,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:10:47,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:47,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410165948] [2024-11-19 14:10:47,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410165948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:10:47,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:10:47,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:10:47,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449707071] [2024-11-19 14:10:47,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:10:47,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:10:47,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:47,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:10:47,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:10:47,115 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 25 [2024-11-19 14:10:47,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:47,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:47,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 25 [2024-11-19 14:10:47,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:47,204 INFO L124 PetriNetUnfolderBase]: 31/89 cut-off events. [2024-11-19 14:10:47,204 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-19 14:10:47,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 89 events. 31/89 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 355 event pairs, 13 based on Foata normal form. 4/87 useless extension candidates. Maximal degree in co-relation 160. Up to 49 conditions per place. [2024-11-19 14:10:47,208 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 12 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2024-11-19 14:10:47,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 92 flow [2024-11-19 14:10:47,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:10:47,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:10:47,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2024-11-19 14:10:47,211 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-11-19 14:10:47,211 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 60 flow. Second operand 4 states and 56 transitions. [2024-11-19 14:10:47,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 92 flow [2024-11-19 14:10:47,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 88 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:10:47,213 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 60 flow [2024-11-19 14:10:47,213 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2024-11-19 14:10:47,214 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 2 predicate places. [2024-11-19 14:10:47,214 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 60 flow [2024-11-19 14:10:47,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:47,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:47,215 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:47,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 14:10:47,215 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:10:47,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:47,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1546137625, now seen corresponding path program 1 times [2024-11-19 14:10:47,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:47,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081742261] [2024-11-19 14:10:47,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:47,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:47,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:10:47,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:47,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081742261] [2024-11-19 14:10:47,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081742261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:10:47,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:10:47,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:10:47,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599131960] [2024-11-19 14:10:47,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:10:47,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:10:47,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:47,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:10:47,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:10:47,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 25 [2024-11-19 14:10:47,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:47,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:47,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 25 [2024-11-19 14:10:47,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:47,367 INFO L124 PetriNetUnfolderBase]: 27/83 cut-off events. [2024-11-19 14:10:47,368 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-19 14:10:47,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 83 events. 27/83 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 306 event pairs, 3 based on Foata normal form. 4/81 useless extension candidates. Maximal degree in co-relation 150. Up to 37 conditions per place. [2024-11-19 14:10:47,369 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 14 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2024-11-19 14:10:47,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 102 flow [2024-11-19 14:10:47,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:10:47,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:10:47,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-11-19 14:10:47,371 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-11-19 14:10:47,372 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 60 flow. Second operand 4 states and 58 transitions. [2024-11-19 14:10:47,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 102 flow [2024-11-19 14:10:47,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 96 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:10:47,373 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 58 flow [2024-11-19 14:10:47,374 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2024-11-19 14:10:47,374 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2024-11-19 14:10:47,375 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 58 flow [2024-11-19 14:10:47,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:47,375 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:47,375 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:47,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 14:10:47,376 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:10:47,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:47,376 INFO L85 PathProgramCache]: Analyzing trace with hash 220434298, now seen corresponding path program 1 times [2024-11-19 14:10:47,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:47,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158561673] [2024-11-19 14:10:47,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:47,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:10:47,398 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:10:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:10:47,427 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:10:47,428 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 14:10:47,429 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-19 14:10:47,430 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-19 14:10:47,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-19 14:10:47,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-19 14:10:47,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-19 14:10:47,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-19 14:10:47,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:10:47,432 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-19 14:10:47,434 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 14:10:47,434 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-19 14:10:47,464 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 14:10:47,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 33 transitions, 86 flow [2024-11-19 14:10:47,474 INFO L124 PetriNetUnfolderBase]: 3/54 cut-off events. [2024-11-19 14:10:47,474 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 14:10:47,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 54 events. 3/54 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 89 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 49. Up to 6 conditions per place. [2024-11-19 14:10:47,475 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 33 transitions, 86 flow [2024-11-19 14:10:47,475 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 31 transitions, 80 flow [2024-11-19 14:10:47,477 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:10:47,478 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;@539e8c5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:10:47,478 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-19 14:10:47,479 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:10:47,480 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-19 14:10:47,480 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:10:47,480 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:47,480 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-19 14:10:47,480 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:10:47,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:47,481 INFO L85 PathProgramCache]: Analyzing trace with hash 8190149, now seen corresponding path program 1 times [2024-11-19 14:10:47,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:47,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219836288] [2024-11-19 14:10:47,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:47,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:47,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:10:47,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:47,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219836288] [2024-11-19 14:10:47,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219836288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:10:47,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:10:47,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:10:47,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939656357] [2024-11-19 14:10:47,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:10:47,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:10:47,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:47,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:10:47,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:10:47,533 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 33 [2024-11-19 14:10:47,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:47,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:47,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 33 [2024-11-19 14:10:47,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:47,669 INFO L124 PetriNetUnfolderBase]: 247/555 cut-off events. [2024-11-19 14:10:47,673 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-19 14:10:47,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 555 events. 247/555 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3147 event pairs, 99 based on Foata normal form. 0/475 useless extension candidates. Maximal degree in co-relation 418. Up to 369 conditions per place. [2024-11-19 14:10:47,682 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 20 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2024-11-19 14:10:47,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 136 flow [2024-11-19 14:10:47,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:10:47,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:10:47,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-11-19 14:10:47,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7171717171717171 [2024-11-19 14:10:47,685 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 80 flow. Second operand 3 states and 71 transitions. [2024-11-19 14:10:47,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 136 flow [2024-11-19 14:10:47,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:10:47,687 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 91 flow [2024-11-19 14:10:47,687 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2024-11-19 14:10:47,687 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2024-11-19 14:10:47,688 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 91 flow [2024-11-19 14:10:47,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:47,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:47,688 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:47,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 14:10:47,688 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:10:47,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:47,689 INFO L85 PathProgramCache]: Analyzing trace with hash -814131878, now seen corresponding path program 1 times [2024-11-19 14:10:47,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:47,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729390644] [2024-11-19 14:10:47,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:47,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:47,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:10:47,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:47,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729390644] [2024-11-19 14:10:47,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729390644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:10:47,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:10:47,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:10:47,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934225755] [2024-11-19 14:10:47,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:10:47,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:10:47,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:47,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:10:47,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:10:47,758 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2024-11-19 14:10:47,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:47,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:47,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2024-11-19 14:10:47,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:47,841 INFO L124 PetriNetUnfolderBase]: 283/571 cut-off events. [2024-11-19 14:10:47,841 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-19 14:10:47,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1110 conditions, 571 events. 283/571 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3250 event pairs, 191 based on Foata normal form. 20/561 useless extension candidates. Maximal degree in co-relation 466. Up to 333 conditions per place. [2024-11-19 14:10:47,846 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 18 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2024-11-19 14:10:47,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 35 transitions, 141 flow [2024-11-19 14:10:47,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:10:47,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:10:47,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-11-19 14:10:47,848 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-11-19 14:10:47,848 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 91 flow. Second operand 4 states and 78 transitions. [2024-11-19 14:10:47,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 35 transitions, 141 flow [2024-11-19 14:10:47,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 35 transitions, 139 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:10:47,850 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 95 flow [2024-11-19 14:10:47,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2024-11-19 14:10:47,851 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2024-11-19 14:10:47,851 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 95 flow [2024-11-19 14:10:47,851 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) [2024-11-19 14:10:47,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:47,852 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:47,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 14:10:47,852 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:10:47,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:47,852 INFO L85 PathProgramCache]: Analyzing trace with hash 531715834, now seen corresponding path program 1 times [2024-11-19 14:10:47,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:47,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690302296] [2024-11-19 14:10:47,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:47,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:47,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:10:47,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:47,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690302296] [2024-11-19 14:10:47,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690302296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:10:47,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:10:47,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:10:47,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27006832] [2024-11-19 14:10:47,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:10:47,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:10:47,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:47,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:10:47,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:10:47,919 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2024-11-19 14:10:47,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:47,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:47,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2024-11-19 14:10:47,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:48,024 INFO L124 PetriNetUnfolderBase]: 279/561 cut-off events. [2024-11-19 14:10:48,024 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-11-19 14:10:48,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1129 conditions, 561 events. 279/561 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3040 event pairs, 111 based on Foata normal form. 4/527 useless extension candidates. Maximal degree in co-relation 477. Up to 417 conditions per place. [2024-11-19 14:10:48,031 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 22 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2024-11-19 14:10:48,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 161 flow [2024-11-19 14:10:48,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:10:48,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:10:48,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2024-11-19 14:10:48,034 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2024-11-19 14:10:48,034 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 95 flow. Second operand 4 states and 82 transitions. [2024-11-19 14:10:48,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 161 flow [2024-11-19 14:10:48,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 151 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:10:48,036 INFO L231 Difference]: Finished difference. Result has 45 places, 32 transitions, 103 flow [2024-11-19 14:10:48,037 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=45, PETRI_TRANSITIONS=32} [2024-11-19 14:10:48,039 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2024-11-19 14:10:48,039 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 32 transitions, 103 flow [2024-11-19 14:10:48,039 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) [2024-11-19 14:10:48,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:48,040 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:48,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 14:10:48,041 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:10:48,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:48,041 INFO L85 PathProgramCache]: Analyzing trace with hash 507288789, now seen corresponding path program 1 times [2024-11-19 14:10:48,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:48,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668601444] [2024-11-19 14:10:48,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:48,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:48,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:10:48,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:48,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668601444] [2024-11-19 14:10:48,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668601444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:10:48,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:10:48,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:10:48,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618166583] [2024-11-19 14:10:48,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:10:48,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:10:48,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:48,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:10:48,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:10:48,128 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2024-11-19 14:10:48,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 32 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:48,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:48,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2024-11-19 14:10:48,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:48,277 INFO L124 PetriNetUnfolderBase]: 391/735 cut-off events. [2024-11-19 14:10:48,277 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2024-11-19 14:10:48,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1489 conditions, 735 events. 391/735 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4103 event pairs, 299 based on Foata normal form. 20/715 useless extension candidates. Maximal degree in co-relation 624. Up to 502 conditions per place. [2024-11-19 14:10:48,284 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 27 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2024-11-19 14:10:48,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 42 transitions, 183 flow [2024-11-19 14:10:48,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:10:48,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:10:48,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-11-19 14:10:48,286 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2024-11-19 14:10:48,286 INFO L175 Difference]: Start difference. First operand has 45 places, 32 transitions, 103 flow. Second operand 4 states and 86 transitions. [2024-11-19 14:10:48,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 42 transitions, 183 flow [2024-11-19 14:10:48,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 42 transitions, 179 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:10:48,288 INFO L231 Difference]: Finished difference. Result has 48 places, 34 transitions, 121 flow [2024-11-19 14:10:48,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=48, PETRI_TRANSITIONS=34} [2024-11-19 14:10:48,289 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2024-11-19 14:10:48,289 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 34 transitions, 121 flow [2024-11-19 14:10:48,289 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) [2024-11-19 14:10:48,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:48,290 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:48,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 14:10:48,290 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:10:48,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:48,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1349342509, now seen corresponding path program 1 times [2024-11-19 14:10:48,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:48,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410304511] [2024-11-19 14:10:48,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:48,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:48,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:10:48,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:48,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410304511] [2024-11-19 14:10:48,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410304511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:10:48,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107332539] [2024-11-19 14:10:48,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:48,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:10:48,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:10:48,376 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) [2024-11-19 14:10:48,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:10:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:48,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:10:48,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:10:48,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:10:48,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:10:48,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:10:48,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107332539] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:10:48,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:10:48,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 14:10:48,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155283303] [2024-11-19 14:10:48,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:10:48,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 14:10:48,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:48,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 14:10:48,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-19 14:10:48,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2024-11-19 14:10:48,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 34 transitions, 121 flow. Second operand has 11 states, 11 states have (on average 16.363636363636363) internal successors, (180), 11 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:48,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:48,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2024-11-19 14:10:48,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:48,723 INFO L124 PetriNetUnfolderBase]: 187/369 cut-off events. [2024-11-19 14:10:48,723 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-11-19 14:10:48,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 369 events. 187/369 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1844 event pairs, 15 based on Foata normal form. 20/379 useless extension candidates. Maximal degree in co-relation 781. Up to 96 conditions per place. [2024-11-19 14:10:48,726 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 29 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2024-11-19 14:10:48,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 193 flow [2024-11-19 14:10:48,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 14:10:48,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 14:10:48,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-11-19 14:10:48,727 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5643939393939394 [2024-11-19 14:10:48,727 INFO L175 Difference]: Start difference. First operand has 48 places, 34 transitions, 121 flow. Second operand 8 states and 149 transitions. [2024-11-19 14:10:48,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 193 flow [2024-11-19 14:10:48,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 193 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:10:48,729 INFO L231 Difference]: Finished difference. Result has 48 places, 26 transitions, 97 flow [2024-11-19 14:10:48,729 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=97, PETRI_PLACES=48, PETRI_TRANSITIONS=26} [2024-11-19 14:10:48,730 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2024-11-19 14:10:48,730 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 26 transitions, 97 flow [2024-11-19 14:10:48,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.363636363636363) internal successors, (180), 11 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:48,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:48,730 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:48,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:10:48,934 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 [2024-11-19 14:10:48,935 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:10:48,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:48,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1335214088, now seen corresponding path program 1 times [2024-11-19 14:10:48,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:48,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396366876] [2024-11-19 14:10:48,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:48,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:49,009 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:10:49,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:49,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396366876] [2024-11-19 14:10:49,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396366876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:10:49,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904982603] [2024-11-19 14:10:49,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:49,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:10:49,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:10:49,012 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) [2024-11-19 14:10:49,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:10:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:49,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:10:49,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:10:49,106 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:10:49,106 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:10:49,166 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:10:49,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904982603] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:10:49,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:10:49,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-19 14:10:49,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061311452] [2024-11-19 14:10:49,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:10:49,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 14:10:49,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:49,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 14:10:49,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-19 14:10:49,182 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2024-11-19 14:10:49,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 26 transitions, 97 flow. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:49,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:49,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2024-11-19 14:10:49,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:49,282 INFO L124 PetriNetUnfolderBase]: 155/323 cut-off events. [2024-11-19 14:10:49,282 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2024-11-19 14:10:49,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 323 events. 155/323 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1577 event pairs, 15 based on Foata normal form. 16/329 useless extension candidates. Maximal degree in co-relation 712. Up to 96 conditions per place. [2024-11-19 14:10:49,285 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 25 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2024-11-19 14:10:49,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 40 transitions, 181 flow [2024-11-19 14:10:49,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 14:10:49,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 14:10:49,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-11-19 14:10:49,286 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5584415584415584 [2024-11-19 14:10:49,286 INFO L175 Difference]: Start difference. First operand has 48 places, 26 transitions, 97 flow. Second operand 7 states and 129 transitions. [2024-11-19 14:10:49,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 40 transitions, 181 flow [2024-11-19 14:10:49,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 40 transitions, 166 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-19 14:10:49,288 INFO L231 Difference]: Finished difference. Result has 46 places, 25 transitions, 86 flow [2024-11-19 14:10:49,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=86, PETRI_PLACES=46, PETRI_TRANSITIONS=25} [2024-11-19 14:10:49,289 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2024-11-19 14:10:49,289 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 25 transitions, 86 flow [2024-11-19 14:10:49,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:49,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:49,290 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:49,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 14:10:49,493 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 [2024-11-19 14:10:49,494 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:10:49,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:49,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1054474366, now seen corresponding path program 1 times [2024-11-19 14:10:49,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:49,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918995388] [2024-11-19 14:10:49,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:49,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:10:49,504 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:10:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:10:49,521 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:10:49,522 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 14:10:49,522 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-19 14:10:49,522 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-19 14:10:49,522 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-19 14:10:49,523 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-19 14:10:49,523 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-19 14:10:49,523 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-19 14:10:49,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 14:10:49,524 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:49,527 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 14:10:49,527 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-19 14:10:49,548 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 14:10:49,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 41 transitions, 118 flow [2024-11-19 14:10:49,557 INFO L124 PetriNetUnfolderBase]: 4/76 cut-off events. [2024-11-19 14:10:49,559 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-19 14:10:49,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 76 events. 4/76 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 79. Up to 8 conditions per place. [2024-11-19 14:10:49,559 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 41 transitions, 118 flow [2024-11-19 14:10:49,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 111 flow [2024-11-19 14:10:49,560 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:10:49,561 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;@539e8c5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:10:49,561 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-19 14:10:49,562 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:10:49,562 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-19 14:10:49,562 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:10:49,562 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:49,562 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-19 14:10:49,562 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:10:49,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:49,562 INFO L85 PathProgramCache]: Analyzing trace with hash 9452293, now seen corresponding path program 1 times [2024-11-19 14:10:49,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:49,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537131032] [2024-11-19 14:10:49,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:49,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:49,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:10:49,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:49,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537131032] [2024-11-19 14:10:49,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537131032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:10:49,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:10:49,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:10:49,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872000513] [2024-11-19 14:10:49,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:10:49,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:10:49,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:49,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:10:49,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:10:49,595 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2024-11-19 14:10:49,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:49,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:49,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2024-11-19 14:10:49,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:49,876 INFO L124 PetriNetUnfolderBase]: 1575/2859 cut-off events. [2024-11-19 14:10:49,876 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2024-11-19 14:10:49,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5266 conditions, 2859 events. 1575/2859 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 18811 event pairs, 915 based on Foata normal form. 0/2523 useless extension candidates. Maximal degree in co-relation 2330. Up to 2145 conditions per place. [2024-11-19 14:10:49,898 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 24 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2024-11-19 14:10:49,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 175 flow [2024-11-19 14:10:49,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:10:49,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:10:49,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-11-19 14:10:49,900 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7073170731707317 [2024-11-19 14:10:49,900 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 111 flow. Second operand 3 states and 87 transitions. [2024-11-19 14:10:49,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 175 flow [2024-11-19 14:10:49,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 45 transitions, 170 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-19 14:10:49,902 INFO L231 Difference]: Finished difference. Result has 54 places, 40 transitions, 118 flow [2024-11-19 14:10:49,902 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=54, PETRI_TRANSITIONS=40} [2024-11-19 14:10:49,903 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-11-19 14:10:49,903 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 40 transitions, 118 flow [2024-11-19 14:10:49,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:49,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:49,903 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:49,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 14:10:49,903 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:10:49,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:49,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1861794512, now seen corresponding path program 1 times [2024-11-19 14:10:49,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:49,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722348708] [2024-11-19 14:10:49,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:49,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:49,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:10:49,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:49,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722348708] [2024-11-19 14:10:49,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722348708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:10:49,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:10:49,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:10:49,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437761749] [2024-11-19 14:10:49,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:10:49,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:10:49,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:49,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:10:49,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:10:49,933 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-19 14:10:49,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 40 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:49,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:49,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-19 14:10:49,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:50,302 INFO L124 PetriNetUnfolderBase]: 1803/3003 cut-off events. [2024-11-19 14:10:50,303 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2024-11-19 14:10:50,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5848 conditions, 3003 events. 1803/3003 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 18801 event pairs, 1263 based on Foata normal form. 84/2961 useless extension candidates. Maximal degree in co-relation 2578. Up to 1853 conditions per place. [2024-11-19 14:10:50,332 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 24 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-11-19 14:10:50,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 45 transitions, 184 flow [2024-11-19 14:10:50,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:10:50,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:10:50,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-11-19 14:10:50,333 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2024-11-19 14:10:50,333 INFO L175 Difference]: Start difference. First operand has 54 places, 40 transitions, 118 flow. Second operand 4 states and 100 transitions. [2024-11-19 14:10:50,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 45 transitions, 184 flow [2024-11-19 14:10:50,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 45 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:10:50,335 INFO L231 Difference]: Finished difference. Result has 55 places, 39 transitions, 122 flow [2024-11-19 14:10:50,336 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=55, PETRI_TRANSITIONS=39} [2024-11-19 14:10:50,336 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-11-19 14:10:50,336 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 122 flow [2024-11-19 14:10:50,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:50,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:50,337 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:50,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 14:10:50,337 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:10:50,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:50,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1881054707, now seen corresponding path program 1 times [2024-11-19 14:10:50,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:50,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779463238] [2024-11-19 14:10:50,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:50,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:50,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:10:50,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:50,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779463238] [2024-11-19 14:10:50,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779463238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:10:50,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:10:50,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:10:50,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489352863] [2024-11-19 14:10:50,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:10:50,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:10:50,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:50,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:10:50,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:10:50,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-19 14:10:50,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:50,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:50,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-19 14:10:50,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:50,673 INFO L124 PetriNetUnfolderBase]: 1799/2995 cut-off events. [2024-11-19 14:10:50,673 INFO L125 PetriNetUnfolderBase]: For 514/514 co-relation queries the response was YES. [2024-11-19 14:10:50,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5997 conditions, 2995 events. 1799/2995 cut-off events. For 514/514 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 18373 event pairs, 1055 based on Foata normal form. 4/2833 useless extension candidates. Maximal degree in co-relation 2654. Up to 2449 conditions per place. [2024-11-19 14:10:50,710 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 26 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-11-19 14:10:50,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 46 transitions, 196 flow [2024-11-19 14:10:50,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:10:50,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:10:50,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-19 14:10:50,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6219512195121951 [2024-11-19 14:10:50,713 INFO L175 Difference]: Start difference. First operand has 55 places, 39 transitions, 122 flow. Second operand 4 states and 102 transitions. [2024-11-19 14:10:50,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 46 transitions, 196 flow [2024-11-19 14:10:50,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 46 transitions, 186 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:10:50,716 INFO L231 Difference]: Finished difference. Result has 57 places, 40 transitions, 130 flow [2024-11-19 14:10:50,716 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=57, PETRI_TRANSITIONS=40} [2024-11-19 14:10:50,718 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-11-19 14:10:50,718 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 40 transitions, 130 flow [2024-11-19 14:10:50,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:50,718 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:50,718 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:50,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 14:10:50,719 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:10:50,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:50,719 INFO L85 PathProgramCache]: Analyzing trace with hash -2062158869, now seen corresponding path program 1 times [2024-11-19 14:10:50,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:50,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127827939] [2024-11-19 14:10:50,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:50,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:50,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:10:50,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:50,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127827939] [2024-11-19 14:10:50,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127827939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:10:50,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:10:50,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:10:50,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538560843] [2024-11-19 14:10:50,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:10:50,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:10:50,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:50,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:10:50,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:10:50,772 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-19 14:10:50,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 40 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:50,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:50,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-19 14:10:50,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:51,159 INFO L124 PetriNetUnfolderBase]: 2487/3935 cut-off events. [2024-11-19 14:10:51,160 INFO L125 PetriNetUnfolderBase]: For 360/360 co-relation queries the response was YES. [2024-11-19 14:10:51,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7891 conditions, 3935 events. 2487/3935 cut-off events. For 360/360 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 24175 event pairs, 1947 based on Foata normal form. 84/3851 useless extension candidates. Maximal degree in co-relation 3472. Up to 2790 conditions per place. [2024-11-19 14:10:51,198 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 35 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2024-11-19 14:10:51,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 54 transitions, 234 flow [2024-11-19 14:10:51,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:10:51,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:10:51,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-11-19 14:10:51,200 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6707317073170732 [2024-11-19 14:10:51,200 INFO L175 Difference]: Start difference. First operand has 57 places, 40 transitions, 130 flow. Second operand 4 states and 110 transitions. [2024-11-19 14:10:51,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 54 transitions, 234 flow [2024-11-19 14:10:51,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 54 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:10:51,202 INFO L231 Difference]: Finished difference. Result has 60 places, 42 transitions, 148 flow [2024-11-19 14:10:51,202 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=60, PETRI_TRANSITIONS=42} [2024-11-19 14:10:51,203 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2024-11-19 14:10:51,203 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 42 transitions, 148 flow [2024-11-19 14:10:51,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:51,204 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:51,204 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:51,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 14:10:51,204 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:10:51,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:51,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1437635334, now seen corresponding path program 1 times [2024-11-19 14:10:51,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:51,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343485077] [2024-11-19 14:10:51,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:51,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:51,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:10:51,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:51,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343485077] [2024-11-19 14:10:51,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343485077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:10:51,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579933247] [2024-11-19 14:10:51,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:51,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:10:51,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:10:51,251 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) [2024-11-19 14:10:51,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:10:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:51,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:10:51,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:10:51,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:10:51,383 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:10:51,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:10:51,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579933247] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:10:51,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:10:51,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 14:10:51,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965392518] [2024-11-19 14:10:51,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:10:51,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 14:10:51,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:51,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 14:10:51,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-19 14:10:51,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-19 14:10:51,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 42 transitions, 148 flow. Second operand has 11 states, 11 states have (on average 20.363636363636363) internal successors, (224), 11 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:51,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:51,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-19 14:10:51,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:51,828 INFO L124 PetriNetUnfolderBase]: 2091/3379 cut-off events. [2024-11-19 14:10:51,828 INFO L125 PetriNetUnfolderBase]: For 644/644 co-relation queries the response was YES. [2024-11-19 14:10:51,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7324 conditions, 3379 events. 2091/3379 cut-off events. For 644/644 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 20316 event pairs, 255 based on Foata normal form. 20/3325 useless extension candidates. Maximal degree in co-relation 4879. Up to 1345 conditions per place. [2024-11-19 14:10:51,856 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 47 selfloop transitions, 8 changer transitions 0/72 dead transitions. [2024-11-19 14:10:51,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 72 transitions, 324 flow [2024-11-19 14:10:51,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 14:10:51,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 14:10:51,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-11-19 14:10:51,858 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6067073170731707 [2024-11-19 14:10:51,858 INFO L175 Difference]: Start difference. First operand has 60 places, 42 transitions, 148 flow. Second operand 8 states and 199 transitions. [2024-11-19 14:10:51,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 72 transitions, 324 flow [2024-11-19 14:10:51,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 72 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:10:51,866 INFO L231 Difference]: Finished difference. Result has 70 places, 46 transitions, 197 flow [2024-11-19 14:10:51,866 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=197, PETRI_PLACES=70, PETRI_TRANSITIONS=46} [2024-11-19 14:10:51,867 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2024-11-19 14:10:51,867 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 46 transitions, 197 flow [2024-11-19 14:10:51,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.363636363636363) internal successors, (224), 11 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:51,868 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:51,868 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:51,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 14:10:52,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:10:52,069 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:10:52,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:52,069 INFO L85 PathProgramCache]: Analyzing trace with hash 2032764145, now seen corresponding path program 1 times [2024-11-19 14:10:52,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:52,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527486218] [2024-11-19 14:10:52,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:52,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:52,122 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:10:52,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:52,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527486218] [2024-11-19 14:10:52,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527486218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:10:52,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181160288] [2024-11-19 14:10:52,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:52,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:10:52,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:10:52,126 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) [2024-11-19 14:10:52,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:10:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:52,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:10:52,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:10:52,217 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:10:52,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:10:52,269 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:10:52,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181160288] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:10:52,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:10:52,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-19 14:10:52,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991431139] [2024-11-19 14:10:52,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:10:52,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 14:10:52,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:52,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 14:10:52,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-19 14:10:52,283 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-19 14:10:52,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 46 transitions, 197 flow. Second operand has 10 states, 10 states have (on average 20.6) internal successors, (206), 10 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:52,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:52,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-19 14:10:52,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:52,656 INFO L124 PetriNetUnfolderBase]: 1867/3041 cut-off events. [2024-11-19 14:10:52,656 INFO L125 PetriNetUnfolderBase]: For 1374/1374 co-relation queries the response was YES. [2024-11-19 14:10:52,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7084 conditions, 3041 events. 1867/3041 cut-off events. For 1374/1374 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 17904 event pairs, 63 based on Foata normal form. 80/3079 useless extension candidates. Maximal degree in co-relation 4700. Up to 1600 conditions per place. [2024-11-19 14:10:52,680 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 48 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2024-11-19 14:10:52,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 354 flow [2024-11-19 14:10:52,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 14:10:52,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 14:10:52,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-11-19 14:10:52,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5880758807588076 [2024-11-19 14:10:52,682 INFO L175 Difference]: Start difference. First operand has 70 places, 46 transitions, 197 flow. Second operand 9 states and 217 transitions. [2024-11-19 14:10:52,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 354 flow [2024-11-19 14:10:52,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 72 transitions, 340 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-19 14:10:52,690 INFO L231 Difference]: Finished difference. Result has 72 places, 44 transitions, 184 flow [2024-11-19 14:10:52,690 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=184, PETRI_PLACES=72, PETRI_TRANSITIONS=44} [2024-11-19 14:10:52,690 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 20 predicate places. [2024-11-19 14:10:52,690 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 44 transitions, 184 flow [2024-11-19 14:10:52,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.6) internal successors, (206), 10 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:52,691 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:52,691 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:52,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 14:10:52,891 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 [2024-11-19 14:10:52,892 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:10:52,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:52,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1734797716, now seen corresponding path program 1 times [2024-11-19 14:10:52,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:52,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052654285] [2024-11-19 14:10:52,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:52,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:10:52,905 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:10:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:10:52,921 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:10:52,924 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 14:10:52,924 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-19 14:10:52,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-19 14:10:52,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-19 14:10:52,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-19 14:10:52,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-19 14:10:52,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-19 14:10:52,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 14:10:52,925 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:52,927 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 14:10:52,927 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-19 14:10:52,950 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 14:10:52,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 49 transitions, 154 flow [2024-11-19 14:10:52,961 INFO L124 PetriNetUnfolderBase]: 5/98 cut-off events. [2024-11-19 14:10:52,962 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-19 14:10:52,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 98 events. 5/98 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 178 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 111. Up to 10 conditions per place. [2024-11-19 14:10:52,962 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 49 transitions, 154 flow [2024-11-19 14:10:52,963 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 47 transitions, 146 flow [2024-11-19 14:10:52,966 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:10:52,967 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;@539e8c5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:10:52,967 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-19 14:10:52,968 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:10:52,968 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-19 14:10:52,969 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:10:52,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:52,969 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-19 14:10:52,969 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:10:52,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:52,969 INFO L85 PathProgramCache]: Analyzing trace with hash 10960709, now seen corresponding path program 1 times [2024-11-19 14:10:52,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:52,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650206311] [2024-11-19 14:10:52,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:52,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:52,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:10:52,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:52,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650206311] [2024-11-19 14:10:52,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650206311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:10:52,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:10:52,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:10:52,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952598617] [2024-11-19 14:10:52,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:10:52,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:10:52,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:52,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:10:52,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:10:52,988 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 49 [2024-11-19 14:10:52,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:52,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:52,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 49 [2024-11-19 14:10:52,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:54,356 INFO L124 PetriNetUnfolderBase]: 8679/13867 cut-off events. [2024-11-19 14:10:54,357 INFO L125 PetriNetUnfolderBase]: For 2844/2844 co-relation queries the response was YES. [2024-11-19 14:10:54,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26132 conditions, 13867 events. 8679/13867 cut-off events. For 2844/2844 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 98237 event pairs, 5971 based on Foata normal form. 0/12512 useless extension candidates. Maximal degree in co-relation 11866. Up to 11041 conditions per place. [2024-11-19 14:10:54,473 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 28 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2024-11-19 14:10:54,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 53 transitions, 218 flow [2024-11-19 14:10:54,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:10:54,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:10:54,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-19 14:10:54,475 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7006802721088435 [2024-11-19 14:10:54,475 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 146 flow. Second operand 3 states and 103 transitions. [2024-11-19 14:10:54,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 53 transitions, 218 flow [2024-11-19 14:10:54,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 53 transitions, 205 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-19 14:10:54,484 INFO L231 Difference]: Finished difference. Result has 66 places, 48 transitions, 145 flow [2024-11-19 14:10:54,484 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=66, PETRI_TRANSITIONS=48} [2024-11-19 14:10:54,485 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 2 predicate places. [2024-11-19 14:10:54,485 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 48 transitions, 145 flow [2024-11-19 14:10:54,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:54,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:54,485 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:54,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 14:10:54,485 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:10:54,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:54,486 INFO L85 PathProgramCache]: Analyzing trace with hash 132272654, now seen corresponding path program 1 times [2024-11-19 14:10:54,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:54,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854423978] [2024-11-19 14:10:54,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:54,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:54,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:10:54,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:54,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854423978] [2024-11-19 14:10:54,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854423978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:10:54,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:10:54,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:10:54,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964776064] [2024-11-19 14:10:54,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:10:54,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:10:54,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:54,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:10:54,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:10:54,517 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-19 14:10:54,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 48 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:54,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:54,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-19 14:10:54,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:55,890 INFO L124 PetriNetUnfolderBase]: 9931/14779 cut-off events. [2024-11-19 14:10:55,890 INFO L125 PetriNetUnfolderBase]: For 2000/2000 co-relation queries the response was YES. [2024-11-19 14:10:55,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28890 conditions, 14779 events. 9931/14779 cut-off events. For 2000/2000 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 96972 event pairs, 7087 based on Foata normal form. 340/14610 useless extension candidates. Maximal degree in co-relation 13074. Up to 9469 conditions per place. [2024-11-19 14:10:56,008 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 30 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2024-11-19 14:10:56,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 55 transitions, 227 flow [2024-11-19 14:10:56,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:10:56,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:10:56,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-11-19 14:10:56,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6224489795918368 [2024-11-19 14:10:56,009 INFO L175 Difference]: Start difference. First operand has 66 places, 48 transitions, 145 flow. Second operand 4 states and 122 transitions. [2024-11-19 14:10:56,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 55 transitions, 227 flow [2024-11-19 14:10:56,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 55 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:10:56,016 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 149 flow [2024-11-19 14:10:56,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=149, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2024-11-19 14:10:56,016 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 3 predicate places. [2024-11-19 14:10:56,017 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 149 flow [2024-11-19 14:10:56,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:56,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:56,017 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:56,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 14:10:56,017 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:10:56,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:56,018 INFO L85 PathProgramCache]: Analyzing trace with hash -194514656, now seen corresponding path program 1 times [2024-11-19 14:10:56,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:56,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374616251] [2024-11-19 14:10:56,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:56,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:56,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:10:56,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:56,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374616251] [2024-11-19 14:10:56,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374616251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:10:56,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:10:56,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:10:56,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415020013] [2024-11-19 14:10:56,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:10:56,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:10:56,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:56,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:10:56,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:10:56,050 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-19 14:10:56,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:56,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:56,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-19 14:10:56,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:57,283 INFO L124 PetriNetUnfolderBase]: 9927/14769 cut-off events. [2024-11-19 14:10:57,283 INFO L125 PetriNetUnfolderBase]: For 2850/2850 co-relation queries the response was YES. [2024-11-19 14:10:57,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29549 conditions, 14769 events. 9927/14769 cut-off events. For 2850/2850 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 95840 event pairs, 6879 based on Foata normal form. 4/14100 useless extension candidates. Maximal degree in co-relation 13405. Up to 12625 conditions per place. [2024-11-19 14:10:57,393 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 30 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2024-11-19 14:10:57,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 54 transitions, 231 flow [2024-11-19 14:10:57,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:10:57,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:10:57,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-11-19 14:10:57,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6224489795918368 [2024-11-19 14:10:57,395 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 149 flow. Second operand 4 states and 122 transitions. [2024-11-19 14:10:57,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 54 transitions, 231 flow [2024-11-19 14:10:57,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 54 transitions, 221 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:10:57,401 INFO L231 Difference]: Finished difference. Result has 69 places, 48 transitions, 157 flow [2024-11-19 14:10:57,401 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=157, PETRI_PLACES=69, PETRI_TRANSITIONS=48} [2024-11-19 14:10:57,402 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 5 predicate places. [2024-11-19 14:10:57,402 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 48 transitions, 157 flow [2024-11-19 14:10:57,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:57,402 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:57,402 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:57,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 14:10:57,403 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:10:57,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:57,403 INFO L85 PathProgramCache]: Analyzing trace with hash -874879479, now seen corresponding path program 1 times [2024-11-19 14:10:57,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:57,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432498561] [2024-11-19 14:10:57,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:57,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:10:57,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:57,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432498561] [2024-11-19 14:10:57,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432498561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:10:57,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:10:57,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:10:57,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077246244] [2024-11-19 14:10:57,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:10:57,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:10:57,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:57,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:10:57,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:10:57,442 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-19 14:10:57,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 48 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:57,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:57,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-19 14:10:57,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:10:59,247 INFO L124 PetriNetUnfolderBase]: 13687/19551 cut-off events. [2024-11-19 14:10:59,248 INFO L125 PetriNetUnfolderBase]: For 2184/2184 co-relation queries the response was YES. [2024-11-19 14:10:59,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39125 conditions, 19551 events. 13687/19551 cut-off events. For 2184/2184 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 123833 event pairs, 10843 based on Foata normal form. 340/19212 useless extension candidates. Maximal degree in co-relation 17680. Up to 14246 conditions per place. [2024-11-19 14:10:59,381 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 43 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2024-11-19 14:10:59,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 285 flow [2024-11-19 14:10:59,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:10:59,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:10:59,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-11-19 14:10:59,383 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6836734693877551 [2024-11-19 14:10:59,383 INFO L175 Difference]: Start difference. First operand has 69 places, 48 transitions, 157 flow. Second operand 4 states and 134 transitions. [2024-11-19 14:10:59,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 285 flow [2024-11-19 14:10:59,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 66 transitions, 281 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:10:59,395 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 175 flow [2024-11-19 14:10:59,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2024-11-19 14:10:59,396 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 8 predicate places. [2024-11-19 14:10:59,396 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 175 flow [2024-11-19 14:10:59,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:59,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:10:59,396 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:10:59,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 14:10:59,396 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:10:59,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:10:59,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1672658375, now seen corresponding path program 1 times [2024-11-19 14:10:59,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:10:59,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077828142] [2024-11-19 14:10:59,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:59,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:10:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:59,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:10:59,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:10:59,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077828142] [2024-11-19 14:10:59,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077828142] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:10:59,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885243431] [2024-11-19 14:10:59,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:10:59,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:10:59,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:10:59,455 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) [2024-11-19 14:10:59,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 14:10:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:10:59,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:10:59,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:10:59,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:10:59,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:10:59,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:10:59,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885243431] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:10:59,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:10:59,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 14:10:59,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233641893] [2024-11-19 14:10:59,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:10:59,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 14:10:59,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:10:59,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 14:10:59,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-19 14:10:59,648 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-19 14:10:59,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 175 flow. Second operand has 11 states, 11 states have (on average 24.363636363636363) internal successors, (268), 11 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:10:59,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:10:59,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-19 14:10:59,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:01,126 INFO L124 PetriNetUnfolderBase]: 12267/17961 cut-off events. [2024-11-19 14:11:01,126 INFO L125 PetriNetUnfolderBase]: For 3492/3492 co-relation queries the response was YES. [2024-11-19 14:11:01,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38548 conditions, 17961 events. 12267/17961 cut-off events. For 3492/3492 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 116174 event pairs, 2495 based on Foata normal form. 20/17672 useless extension candidates. Maximal degree in co-relation 24837. Up to 8001 conditions per place. [2024-11-19 14:11:01,307 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 53 selfloop transitions, 8 changer transitions 0/82 dead transitions. [2024-11-19 14:11:01,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 82 transitions, 367 flow [2024-11-19 14:11:01,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 14:11:01,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 14:11:01,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 237 transitions. [2024-11-19 14:11:01,309 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6045918367346939 [2024-11-19 14:11:01,309 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 175 flow. Second operand 8 states and 237 transitions. [2024-11-19 14:11:01,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 82 transitions, 367 flow [2024-11-19 14:11:01,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 82 transitions, 365 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:11:01,379 INFO L231 Difference]: Finished difference. Result has 82 places, 54 transitions, 224 flow [2024-11-19 14:11:01,379 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=224, PETRI_PLACES=82, PETRI_TRANSITIONS=54} [2024-11-19 14:11:01,379 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 18 predicate places. [2024-11-19 14:11:01,380 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 54 transitions, 224 flow [2024-11-19 14:11:01,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.363636363636363) internal successors, (268), 11 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:01,380 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:01,380 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:01,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 14:11:01,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-19 14:11:01,581 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:11:01,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:01,582 INFO L85 PathProgramCache]: Analyzing trace with hash 303522530, now seen corresponding path program 1 times [2024-11-19 14:11:01,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:01,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937721611] [2024-11-19 14:11:01,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:01,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:01,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:01,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937721611] [2024-11-19 14:11:01,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937721611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:11:01,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458741501] [2024-11-19 14:11:01,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:01,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:01,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:11:01,642 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) [2024-11-19 14:11:01,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 14:11:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:01,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:11:01,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:11:01,749 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:01,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:11:01,799 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:01,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458741501] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:11:01,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:11:01,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-19 14:11:01,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911606408] [2024-11-19 14:11:01,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:11:01,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 14:11:01,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:01,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 14:11:01,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-19 14:11:01,815 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-19 14:11:01,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 54 transitions, 224 flow. Second operand has 10 states, 10 states have (on average 24.6) internal successors, (246), 10 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:01,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:01,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-19 14:11:01,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:03,215 INFO L124 PetriNetUnfolderBase]: 11019/16377 cut-off events. [2024-11-19 14:11:03,215 INFO L125 PetriNetUnfolderBase]: For 6398/6398 co-relation queries the response was YES. [2024-11-19 14:11:03,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37062 conditions, 16377 events. 11019/16377 cut-off events. For 6398/6398 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 106692 event pairs, 255 based on Foata normal form. 336/16628 useless extension candidates. Maximal degree in co-relation 23668. Up to 7937 conditions per place. [2024-11-19 14:11:03,323 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 75 selfloop transitions, 9 changer transitions 0/105 dead transitions. [2024-11-19 14:11:03,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 105 transitions, 521 flow [2024-11-19 14:11:03,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:11:03,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:11:03,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 303 transitions. [2024-11-19 14:11:03,324 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6183673469387755 [2024-11-19 14:11:03,324 INFO L175 Difference]: Start difference. First operand has 82 places, 54 transitions, 224 flow. Second operand 10 states and 303 transitions. [2024-11-19 14:11:03,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 105 transitions, 521 flow [2024-11-19 14:11:03,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 105 transitions, 505 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-19 14:11:03,371 INFO L231 Difference]: Finished difference. Result has 85 places, 54 transitions, 227 flow [2024-11-19 14:11:03,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=227, PETRI_PLACES=85, PETRI_TRANSITIONS=54} [2024-11-19 14:11:03,372 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 21 predicate places. [2024-11-19 14:11:03,372 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 54 transitions, 227 flow [2024-11-19 14:11:03,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.6) internal successors, (246), 10 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:03,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:03,373 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:03,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 14:11:03,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:03,578 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:11:03,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:03,578 INFO L85 PathProgramCache]: Analyzing trace with hash 337308279, now seen corresponding path program 1 times [2024-11-19 14:11:03,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:03,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983593066] [2024-11-19 14:11:03,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:03,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:03,709 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:11:03,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:03,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983593066] [2024-11-19 14:11:03,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983593066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:11:03,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796141846] [2024-11-19 14:11:03,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:03,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:03,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:11:03,712 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:11:03,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 14:11:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:03,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 14:11:03,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:11:03,962 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:11:03,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:11:04,072 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 14:11:04,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796141846] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:11:04,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:11:04,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-11-19 14:11:04,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250701971] [2024-11-19 14:11:04,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:11:04,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 14:11:04,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:04,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 14:11:04,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2024-11-19 14:11:04,092 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-19 14:11:04,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 54 transitions, 227 flow. Second operand has 23 states, 23 states have (on average 24.695652173913043) internal successors, (568), 23 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:04,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:04,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-19 14:11:04,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:04,914 INFO L124 PetriNetUnfolderBase]: 5835/8475 cut-off events. [2024-11-19 14:11:04,914 INFO L125 PetriNetUnfolderBase]: For 6140/6140 co-relation queries the response was YES. [2024-11-19 14:11:04,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19479 conditions, 8475 events. 5835/8475 cut-off events. For 6140/6140 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 49250 event pairs, 255 based on Foata normal form. 320/8710 useless extension candidates. Maximal degree in co-relation 19462. Up to 2752 conditions per place. [2024-11-19 14:11:04,974 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 65 selfloop transitions, 9 changer transitions 0/92 dead transitions. [2024-11-19 14:11:04,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 92 transitions, 437 flow [2024-11-19 14:11:04,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 14:11:04,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 14:11:04,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 318 transitions. [2024-11-19 14:11:04,975 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5899814471243042 [2024-11-19 14:11:04,975 INFO L175 Difference]: Start difference. First operand has 85 places, 54 transitions, 227 flow. Second operand 11 states and 318 transitions. [2024-11-19 14:11:04,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 92 transitions, 437 flow [2024-11-19 14:11:04,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 92 transitions, 403 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-11-19 14:11:04,982 INFO L231 Difference]: Finished difference. Result has 78 places, 46 transitions, 175 flow [2024-11-19 14:11:04,982 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=175, PETRI_PLACES=78, PETRI_TRANSITIONS=46} [2024-11-19 14:11:04,982 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 14 predicate places. [2024-11-19 14:11:04,983 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 46 transitions, 175 flow [2024-11-19 14:11:04,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 24.695652173913043) internal successors, (568), 23 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:04,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:04,983 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:04,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 14:11:05,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:11:05,184 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:11:05,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:05,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1652814120, now seen corresponding path program 1 times [2024-11-19 14:11:05,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:05,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544577687] [2024-11-19 14:11:05,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:05,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:11:05,194 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 14:11:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 14:11:05,206 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 14:11:05,206 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 14:11:05,206 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-19 14:11:05,206 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-19 14:11:05,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-19 14:11:05,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-19 14:11:05,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-19 14:11:05,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-19 14:11:05,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 14:11:05,207 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:05,208 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 14:11:05,208 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-19 14:11:05,231 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 14:11:05,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 57 transitions, 194 flow [2024-11-19 14:11:05,240 INFO L124 PetriNetUnfolderBase]: 6/120 cut-off events. [2024-11-19 14:11:05,240 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-19 14:11:05,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 120 events. 6/120 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 212 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 145. Up to 12 conditions per place. [2024-11-19 14:11:05,241 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 57 transitions, 194 flow [2024-11-19 14:11:05,241 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 55 transitions, 185 flow [2024-11-19 14:11:05,242 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:11:05,242 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;@539e8c5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:11:05,242 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-19 14:11:05,243 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:11:05,243 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-19 14:11:05,243 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:11:05,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:05,244 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-19 14:11:05,244 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:11:05,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:05,244 INFO L85 PathProgramCache]: Analyzing trace with hash 12715397, now seen corresponding path program 1 times [2024-11-19 14:11:05,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:05,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135607167] [2024-11-19 14:11:05,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:05,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:05,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:05,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:05,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135607167] [2024-11-19 14:11:05,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135607167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:05,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:05,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:11:05,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556603975] [2024-11-19 14:11:05,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:05,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:11:05,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:05,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:11:05,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:11:05,261 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 57 [2024-11-19 14:11:05,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 55 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:05,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:05,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 57 [2024-11-19 14:11:05,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:10,732 INFO L124 PetriNetUnfolderBase]: 44263/65067 cut-off events. [2024-11-19 14:11:10,733 INFO L125 PetriNetUnfolderBase]: For 19228/19228 co-relation queries the response was YES. [2024-11-19 14:11:11,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124694 conditions, 65067 events. 44263/65067 cut-off events. For 19228/19228 co-relation queries the response was YES. Maximal size of possible extension queue 2472. Compared 483146 event pairs, 33363 based on Foata normal form. 0/59616 useless extension candidates. Maximal degree in co-relation 57562. Up to 53793 conditions per place. [2024-11-19 14:11:11,613 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 32 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2024-11-19 14:11:11,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 61 transitions, 265 flow [2024-11-19 14:11:11,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:11:11,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:11:11,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-11-19 14:11:11,615 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.695906432748538 [2024-11-19 14:11:11,615 INFO L175 Difference]: Start difference. First operand has 76 places, 55 transitions, 185 flow. Second operand 3 states and 119 transitions. [2024-11-19 14:11:11,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 61 transitions, 265 flow [2024-11-19 14:11:11,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 61 transitions, 240 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-19 14:11:11,670 INFO L231 Difference]: Finished difference. Result has 78 places, 56 transitions, 172 flow [2024-11-19 14:11:11,670 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=78, PETRI_TRANSITIONS=56} [2024-11-19 14:11:11,671 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2024-11-19 14:11:11,671 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 56 transitions, 172 flow [2024-11-19 14:11:11,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:11,671 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:11,671 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:11,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-19 14:11:11,671 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:11:11,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:11,671 INFO L85 PathProgramCache]: Analyzing trace with hash 873102324, now seen corresponding path program 1 times [2024-11-19 14:11:11,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:11,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532159382] [2024-11-19 14:11:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:11,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:11,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:11,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532159382] [2024-11-19 14:11:11,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532159382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:11,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:11,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:11:11,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257326058] [2024-11-19 14:11:11,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:11,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:11:11,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:11,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:11:11,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:11:11,701 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 57 [2024-11-19 14:11:11,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 56 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:11,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:11,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 57 [2024-11-19 14:11:11,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:16,503 INFO L124 PetriNetUnfolderBase]: 50635/68773 cut-off events. [2024-11-19 14:11:16,504 INFO L125 PetriNetUnfolderBase]: For 12112/12112 co-relation queries the response was YES. [2024-11-19 14:11:16,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136134 conditions, 68773 events. 50635/68773 cut-off events. For 12112/12112 co-relation queries the response was YES. Maximal size of possible extension queue 2386. Compared 447984 event pairs, 24465 based on Foata normal form. 1364/68092 useless extension candidates. Maximal degree in co-relation 73387. Up to 46077 conditions per place. [2024-11-19 14:11:17,406 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 36 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2024-11-19 14:11:17,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 65 transitions, 270 flow [2024-11-19 14:11:17,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:11:17,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:11:17,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2024-11-19 14:11:17,408 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-11-19 14:11:17,408 INFO L175 Difference]: Start difference. First operand has 78 places, 56 transitions, 172 flow. Second operand 4 states and 144 transitions. [2024-11-19 14:11:17,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 65 transitions, 270 flow [2024-11-19 14:11:17,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 65 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:11:17,475 INFO L231 Difference]: Finished difference. Result has 79 places, 55 transitions, 176 flow [2024-11-19 14:11:17,475 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=79, PETRI_TRANSITIONS=55} [2024-11-19 14:11:17,476 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2024-11-19 14:11:17,476 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 55 transitions, 176 flow [2024-11-19 14:11:17,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:17,476 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:17,476 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:17,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-19 14:11:17,476 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:11:17,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:17,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1296368691, now seen corresponding path program 1 times [2024-11-19 14:11:17,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:17,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072950295] [2024-11-19 14:11:17,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:17,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:17,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:11:17,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:17,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072950295] [2024-11-19 14:11:17,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072950295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:17,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:17,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:11:17,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388240768] [2024-11-19 14:11:17,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:17,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:11:17,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:17,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:11:17,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:11:17,507 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 57 [2024-11-19 14:11:17,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 55 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:17,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:17,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 57 [2024-11-19 14:11:17,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:11:22,772 INFO L124 PetriNetUnfolderBase]: 50631/70065 cut-off events. [2024-11-19 14:11:22,773 INFO L125 PetriNetUnfolderBase]: For 15522/15522 co-relation queries the response was YES. [2024-11-19 14:11:23,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140143 conditions, 70065 events. 50631/70065 cut-off events. For 15522/15522 co-relation queries the response was YES. Maximal size of possible extension queue 2528. Compared 469571 event pairs, 38367 based on Foata normal form. 4/67348 useless extension candidates. Maximal degree in co-relation 64605. Up to 61521 conditions per place. [2024-11-19 14:11:23,395 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 34 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-11-19 14:11:23,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 62 transitions, 266 flow [2024-11-19 14:11:23,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:11:23,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:11:23,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2024-11-19 14:11:23,396 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2024-11-19 14:11:23,396 INFO L175 Difference]: Start difference. First operand has 79 places, 55 transitions, 176 flow. Second operand 4 states and 142 transitions. [2024-11-19 14:11:23,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 62 transitions, 266 flow [2024-11-19 14:11:23,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 62 transitions, 256 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:11:23,423 INFO L231 Difference]: Finished difference. Result has 81 places, 56 transitions, 184 flow [2024-11-19 14:11:23,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=81, PETRI_TRANSITIONS=56} [2024-11-19 14:11:23,424 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 5 predicate places. [2024-11-19 14:11:23,424 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 56 transitions, 184 flow [2024-11-19 14:11:23,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:23,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:11:23,424 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:11:23,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-19 14:11:23,424 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-19 14:11:23,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:11:23,424 INFO L85 PathProgramCache]: Analyzing trace with hash -225840337, now seen corresponding path program 1 times [2024-11-19 14:11:23,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:11:23,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866435258] [2024-11-19 14:11:23,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:11:23,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:11:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:11:23,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 14:11:23,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:11:23,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866435258] [2024-11-19 14:11:23,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866435258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:11:23,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:11:23,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:11:23,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468738412] [2024-11-19 14:11:23,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:11:23,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:11:23,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:11:23,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:11:23,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:11:23,457 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 57 [2024-11-19 14:11:23,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 56 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:11:23,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:11:23,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 57 [2024-11-19 14:11:23,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand