./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 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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-803cd42-m [2024-11-23 02:02:35,628 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 02:02:35,684 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 02:02:35,688 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 02:02:35,690 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 02:02:35,718 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 02:02:35,720 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 02:02:35,720 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 02:02:35,721 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 02:02:35,721 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 02:02:35,722 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 02:02:35,723 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 02:02:35,723 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 02:02:35,723 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 02:02:35,725 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 02:02:35,726 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 02:02:35,726 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 02:02:35,726 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 02:02:35,727 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 02:02:35,727 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 02:02:35,727 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 02:02:35,728 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 02:02:35,728 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 02:02:35,732 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 02:02:35,732 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 02:02:35,732 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 02:02:35,732 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 02:02:35,733 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 02:02:35,733 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 02:02:35,733 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 02:02:35,733 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 02:02:35,733 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 02:02:35,734 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 02:02:35,734 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 02:02:35,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 02:02:35,734 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 02:02:35,734 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 02:02:35,734 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 02:02:35,735 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 02:02:35,735 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 02:02:35,735 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 02:02:35,735 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 02:02:35,736 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 02:02:35,736 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 02:02:35,736 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5877a70884380b10e463fa3cfc6b55a5014f8a8b2ecd81a270409b479a9f5bc [2024-11-23 02:02:35,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 02:02:35,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 02:02:35,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 02:02:35,981 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 02:02:35,981 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 02:02:35,982 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/exponential-64.i [2024-11-23 02:02:37,296 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 02:02:37,492 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 02:02:37,493 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/exponential-64.i [2024-11-23 02:02:37,508 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59f0daa7e/d728a7cf6aa3466599f32c72e90bb14e/FLAG1caee4c2a [2024-11-23 02:02:37,518 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59f0daa7e/d728a7cf6aa3466599f32c72e90bb14e [2024-11-23 02:02:37,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 02:02:37,521 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 02:02:37,523 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 02:02:37,523 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 02:02:37,527 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 02:02:37,527 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:02:37" (1/1) ... [2024-11-23 02:02:37,529 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a95e1df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:37, skipping insertion in model container [2024-11-23 02:02:37,530 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:02:37" (1/1) ... [2024-11-23 02:02:37,574 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 02:02:37,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 02:02:37,980 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 02:02:38,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 02:02:38,056 INFO L204 MainTranslator]: Completed translation [2024-11-23 02:02:38,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:38 WrapperNode [2024-11-23 02:02:38,056 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 02:02:38,057 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 02:02:38,057 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 02:02:38,057 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 02:02:38,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:38" (1/1) ... [2024-11-23 02:02:38,075 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:38" (1/1) ... [2024-11-23 02:02:38,092 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 67 [2024-11-23 02:02:38,092 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 02:02:38,093 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 02:02:38,093 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 02:02:38,093 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 02:02:38,101 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:38" (1/1) ... [2024-11-23 02:02:38,102 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:38" (1/1) ... [2024-11-23 02:02:38,104 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:38" (1/1) ... [2024-11-23 02:02:38,113 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]. [2024-11-23 02:02:38,114 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:38" (1/1) ... [2024-11-23 02:02:38,114 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:38" (1/1) ... [2024-11-23 02:02:38,117 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:38" (1/1) ... [2024-11-23 02:02:38,120 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:38" (1/1) ... [2024-11-23 02:02:38,121 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:38" (1/1) ... [2024-11-23 02:02:38,121 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:38" (1/1) ... [2024-11-23 02:02:38,123 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 02:02:38,125 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 02:02:38,125 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 02:02:38,125 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 02:02:38,126 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:38" (1/1) ... [2024-11-23 02:02:38,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 02:02:38,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:02:38,157 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) [2024-11-23 02:02:38,167 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 [2024-11-23 02:02:38,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 02:02:38,208 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-23 02:02:38,208 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-23 02:02:38,208 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-23 02:02:38,208 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-23 02:02:38,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 02:02:38,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 02:02:38,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 02:02:38,211 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 02:02:38,341 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 02:02:38,343 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 02:02:38,530 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 02:02:38,532 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 02:02:38,612 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 02:02:38,612 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 02:02:38,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:02:38 BoogieIcfgContainer [2024-11-23 02:02:38,613 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 02:02:38,614 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 02:02:38,615 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 02:02:38,619 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 02:02:38,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:02:37" (1/3) ... [2024-11-23 02:02:38,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ccc4a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:02:38, skipping insertion in model container [2024-11-23 02:02:38,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:38" (2/3) ... [2024-11-23 02:02:38,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ccc4a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:02:38, skipping insertion in model container [2024-11-23 02:02:38,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:02:38" (3/3) ... [2024-11-23 02:02:38,622 INFO L112 eAbstractionObserver]: Analyzing ICFG exponential-64.i [2024-11-23 02:02:38,636 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 02:02:38,636 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-23 02:02:38,637 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 02:02:38,669 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-23 02:02:38,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 25 transitions, 58 flow [2024-11-23 02:02:38,722 INFO L124 PetriNetUnfolderBase]: 2/32 cut-off events. [2024-11-23 02:02:38,723 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 02:02:38,725 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. [2024-11-23 02:02:38,725 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 25 transitions, 58 flow [2024-11-23 02:02:38,727 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 23 transitions, 53 flow [2024-11-23 02:02:38,734 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 02:02:38,739 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;@3d3fac03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 02:02:38,739 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-23 02:02:38,742 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 02:02:38,742 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-23 02:02:38,743 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 02:02:38,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:38,743 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-23 02:02:38,744 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)] === [2024-11-23 02:02:38,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:38,748 INFO L85 PathProgramCache]: Analyzing trace with hash 7174277, now seen corresponding path program 1 times [2024-11-23 02:02:38,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:38,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877872198] [2024-11-23 02:02:38,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:38,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:38,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:38,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877872198] [2024-11-23 02:02:38,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877872198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:38,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:38,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:02:38,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301328023] [2024-11-23 02:02:38,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:38,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 02:02:38,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:38,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 02:02:38,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 02:02:39,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 25 [2024-11-23 02:02:39,005 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) [2024-11-23 02:02:39,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:39,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 25 [2024-11-23 02:02:39,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:39,098 INFO L124 PetriNetUnfolderBase]: 27/91 cut-off events. [2024-11-23 02:02:39,098 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 02:02:39,099 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. [2024-11-23 02:02:39,101 INFO L140 encePairwiseOnDemand]: 22/25 looper letters, 13 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2024-11-23 02:02:39,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 26 transitions, 89 flow [2024-11-23 02:02:39,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 02:02:39,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 02:02:39,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-23 02:02:39,112 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6933333333333334 [2024-11-23 02:02:39,113 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 53 flow. Second operand 3 states and 52 transitions. [2024-11-23 02:02:39,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 26 transitions, 89 flow [2024-11-23 02:02:39,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 02:02:39,119 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 60 flow [2024-11-23 02:02:39,120 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} [2024-11-23 02:02:39,124 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 2 predicate places. [2024-11-23 02:02:39,124 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 60 flow [2024-11-23 02:02:39,125 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) [2024-11-23 02:02:39,125 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:39,125 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:39,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 02:02:39,126 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)] === [2024-11-23 02:02:39,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:39,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1019706740, now seen corresponding path program 1 times [2024-11-23 02:02:39,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:39,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099759428] [2024-11-23 02:02:39,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:39,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:39,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:39,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:39,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099759428] [2024-11-23 02:02:39,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099759428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:39,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:39,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:02:39,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914010756] [2024-11-23 02:02:39,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:39,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:02:39,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:39,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:02:39,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:02:39,212 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 25 [2024-11-23 02:02:39,212 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) [2024-11-23 02:02:39,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:39,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 25 [2024-11-23 02:02:39,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:39,286 INFO L124 PetriNetUnfolderBase]: 31/89 cut-off events. [2024-11-23 02:02:39,286 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-23 02:02:39,287 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. [2024-11-23 02:02:39,290 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 12 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2024-11-23 02:02:39,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 92 flow [2024-11-23 02:02:39,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:02:39,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:02:39,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2024-11-23 02:02:39,293 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-11-23 02:02:39,293 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 60 flow. Second operand 4 states and 56 transitions. [2024-11-23 02:02:39,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 92 flow [2024-11-23 02:02:39,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 88 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 02:02:39,295 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 60 flow [2024-11-23 02:02:39,296 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} [2024-11-23 02:02:39,297 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 2 predicate places. [2024-11-23 02:02:39,297 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 60 flow [2024-11-23 02:02:39,297 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) [2024-11-23 02:02:39,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:39,298 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:39,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 02:02:39,298 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)] === [2024-11-23 02:02:39,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:39,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1546137625, now seen corresponding path program 1 times [2024-11-23 02:02:39,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:39,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467107811] [2024-11-23 02:02:39,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:39,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:39,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:39,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:39,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467107811] [2024-11-23 02:02:39,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467107811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:39,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:39,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:02:39,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615896752] [2024-11-23 02:02:39,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:39,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:02:39,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:39,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:02:39,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:02:39,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 25 [2024-11-23 02:02:39,391 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) [2024-11-23 02:02:39,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:39,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 25 [2024-11-23 02:02:39,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:39,443 INFO L124 PetriNetUnfolderBase]: 27/83 cut-off events. [2024-11-23 02:02:39,443 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-23 02:02:39,443 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. [2024-11-23 02:02:39,444 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 14 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2024-11-23 02:02:39,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 102 flow [2024-11-23 02:02:39,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:02:39,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:02:39,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-11-23 02:02:39,445 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-11-23 02:02:39,445 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 60 flow. Second operand 4 states and 58 transitions. [2024-11-23 02:02:39,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 102 flow [2024-11-23 02:02:39,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 96 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 02:02:39,447 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 58 flow [2024-11-23 02:02:39,447 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} [2024-11-23 02:02:39,447 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2024-11-23 02:02:39,447 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 58 flow [2024-11-23 02:02:39,448 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) [2024-11-23 02:02:39,448 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:39,448 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:39,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 02:02:39,448 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)] === [2024-11-23 02:02:39,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:39,449 INFO L85 PathProgramCache]: Analyzing trace with hash 220434298, now seen corresponding path program 1 times [2024-11-23 02:02:39,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:39,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578709992] [2024-11-23 02:02:39,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:39,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:02:39,468 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:02:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:02:39,507 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:02:39,507 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-23 02:02:39,508 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-23 02:02:39,510 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-23 02:02:39,510 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-23 02:02:39,510 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-23 02:02:39,510 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-23 02:02:39,511 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-23 02:02:39,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 02:02:39,511 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-23 02:02:39,513 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-23 02:02:39,513 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-23 02:02:39,529 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-23 02:02:39,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 33 transitions, 86 flow [2024-11-23 02:02:39,541 INFO L124 PetriNetUnfolderBase]: 3/54 cut-off events. [2024-11-23 02:02:39,541 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-23 02:02:39,542 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. [2024-11-23 02:02:39,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 33 transitions, 86 flow [2024-11-23 02:02:39,542 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 31 transitions, 80 flow [2024-11-23 02:02:39,543 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 02:02:39,544 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;@3d3fac03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 02:02:39,544 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-23 02:02:39,546 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 02:02:39,546 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-23 02:02:39,546 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 02:02:39,546 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:39,546 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-23 02:02:39,546 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)] === [2024-11-23 02:02:39,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:39,547 INFO L85 PathProgramCache]: Analyzing trace with hash 8190149, now seen corresponding path program 1 times [2024-11-23 02:02:39,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:39,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213283909] [2024-11-23 02:02:39,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:39,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:39,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:39,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:39,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213283909] [2024-11-23 02:02:39,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213283909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:39,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:39,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:02:39,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048358771] [2024-11-23 02:02:39,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:39,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 02:02:39,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:39,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 02:02:39,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 02:02:39,577 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 33 [2024-11-23 02:02:39,578 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) [2024-11-23 02:02:39,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:39,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 33 [2024-11-23 02:02:39,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:39,672 INFO L124 PetriNetUnfolderBase]: 247/555 cut-off events. [2024-11-23 02:02:39,672 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-23 02:02:39,674 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. [2024-11-23 02:02:39,677 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 20 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2024-11-23 02:02:39,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 136 flow [2024-11-23 02:02:39,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 02:02:39,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 02:02:39,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-11-23 02:02:39,679 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7171717171717171 [2024-11-23 02:02:39,679 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 80 flow. Second operand 3 states and 71 transitions. [2024-11-23 02:02:39,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 136 flow [2024-11-23 02:02:39,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 02:02:39,681 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 91 flow [2024-11-23 02:02:39,681 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} [2024-11-23 02:02:39,681 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2024-11-23 02:02:39,682 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 91 flow [2024-11-23 02:02:39,682 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) [2024-11-23 02:02:39,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:39,682 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:39,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 02:02:39,682 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)] === [2024-11-23 02:02:39,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:39,683 INFO L85 PathProgramCache]: Analyzing trace with hash -814131878, now seen corresponding path program 1 times [2024-11-23 02:02:39,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:39,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070351686] [2024-11-23 02:02:39,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:39,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:39,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:39,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:39,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070351686] [2024-11-23 02:02:39,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070351686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:39,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:39,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:02:39,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914634971] [2024-11-23 02:02:39,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:39,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:02:39,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:39,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:02:39,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:02:39,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2024-11-23 02:02:39,723 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) [2024-11-23 02:02:39,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:39,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2024-11-23 02:02:39,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:39,810 INFO L124 PetriNetUnfolderBase]: 283/571 cut-off events. [2024-11-23 02:02:39,810 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-23 02:02:39,813 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. [2024-11-23 02:02:39,816 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 18 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2024-11-23 02:02:39,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 35 transitions, 141 flow [2024-11-23 02:02:39,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:02:39,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:02:39,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-11-23 02:02:39,818 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-11-23 02:02:39,818 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 91 flow. Second operand 4 states and 78 transitions. [2024-11-23 02:02:39,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 35 transitions, 141 flow [2024-11-23 02:02:39,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 35 transitions, 139 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 02:02:39,819 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 95 flow [2024-11-23 02:02:39,819 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} [2024-11-23 02:02:39,820 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2024-11-23 02:02:39,820 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 95 flow [2024-11-23 02:02:39,820 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) [2024-11-23 02:02:39,820 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:39,820 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:39,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 02:02:39,822 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)] === [2024-11-23 02:02:39,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:39,822 INFO L85 PathProgramCache]: Analyzing trace with hash 531715834, now seen corresponding path program 1 times [2024-11-23 02:02:39,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:39,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597968043] [2024-11-23 02:02:39,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:39,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:39,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:39,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:39,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597968043] [2024-11-23 02:02:39,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597968043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:39,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:39,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:02:39,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178142930] [2024-11-23 02:02:39,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:39,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:02:39,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:39,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:02:39,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:02:39,863 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2024-11-23 02:02:39,864 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) [2024-11-23 02:02:39,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:39,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2024-11-23 02:02:39,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:39,933 INFO L124 PetriNetUnfolderBase]: 279/561 cut-off events. [2024-11-23 02:02:39,934 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-11-23 02:02:39,935 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. [2024-11-23 02:02:39,937 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 22 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2024-11-23 02:02:39,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 161 flow [2024-11-23 02:02:39,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:02:39,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:02:39,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2024-11-23 02:02:39,939 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2024-11-23 02:02:39,939 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 95 flow. Second operand 4 states and 82 transitions. [2024-11-23 02:02:39,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 161 flow [2024-11-23 02:02:39,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 151 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 02:02:39,940 INFO L231 Difference]: Finished difference. Result has 45 places, 32 transitions, 103 flow [2024-11-23 02:02:39,940 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} [2024-11-23 02:02:39,941 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2024-11-23 02:02:39,941 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 32 transitions, 103 flow [2024-11-23 02:02:39,941 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) [2024-11-23 02:02:39,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:39,941 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:39,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 02:02:39,942 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)] === [2024-11-23 02:02:39,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:39,943 INFO L85 PathProgramCache]: Analyzing trace with hash 507288789, now seen corresponding path program 1 times [2024-11-23 02:02:39,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:39,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303293381] [2024-11-23 02:02:39,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:39,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:40,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:02:40,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:40,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303293381] [2024-11-23 02:02:40,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303293381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:40,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:40,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 02:02:40,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316207183] [2024-11-23 02:02:40,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:40,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:02:40,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:40,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:02:40,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:02:40,016 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2024-11-23 02:02:40,016 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) [2024-11-23 02:02:40,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:40,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2024-11-23 02:02:40,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:40,097 INFO L124 PetriNetUnfolderBase]: 391/735 cut-off events. [2024-11-23 02:02:40,097 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2024-11-23 02:02:40,098 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. [2024-11-23 02:02:40,101 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 27 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2024-11-23 02:02:40,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 42 transitions, 183 flow [2024-11-23 02:02:40,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:02:40,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:02:40,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-11-23 02:02:40,102 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2024-11-23 02:02:40,102 INFO L175 Difference]: Start difference. First operand has 45 places, 32 transitions, 103 flow. Second operand 4 states and 86 transitions. [2024-11-23 02:02:40,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 42 transitions, 183 flow [2024-11-23 02:02:40,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 42 transitions, 179 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 02:02:40,104 INFO L231 Difference]: Finished difference. Result has 48 places, 34 transitions, 121 flow [2024-11-23 02:02:40,104 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} [2024-11-23 02:02:40,104 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2024-11-23 02:02:40,104 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 34 transitions, 121 flow [2024-11-23 02:02:40,105 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) [2024-11-23 02:02:40,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:40,105 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:40,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 02:02:40,105 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)] === [2024-11-23 02:02:40,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:40,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1349342509, now seen corresponding path program 1 times [2024-11-23 02:02:40,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:40,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274582112] [2024-11-23 02:02:40,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:40,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:40,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 02:02:40,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:40,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274582112] [2024-11-23 02:02:40,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274582112] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:02:40,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254382987] [2024-11-23 02:02:40,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:40,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:02:40,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:02:40,173 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) [2024-11-23 02:02:40,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 02:02:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:40,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:02:40,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:02:40,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 02:02:40,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:02:40,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 02:02:40,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254382987] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:02:40,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:02:40,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-23 02:02:40,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872652458] [2024-11-23 02:02:40,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:02:40,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 02:02:40,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:40,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 02:02:40,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-23 02:02:40,416 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2024-11-23 02:02:40,416 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) [2024-11-23 02:02:40,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:40,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2024-11-23 02:02:40,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:40,513 INFO L124 PetriNetUnfolderBase]: 187/369 cut-off events. [2024-11-23 02:02:40,513 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-11-23 02:02:40,514 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. [2024-11-23 02:02:40,515 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 29 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2024-11-23 02:02:40,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 193 flow [2024-11-23 02:02:40,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 02:02:40,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-23 02:02:40,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-11-23 02:02:40,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5643939393939394 [2024-11-23 02:02:40,517 INFO L175 Difference]: Start difference. First operand has 48 places, 34 transitions, 121 flow. Second operand 8 states and 149 transitions. [2024-11-23 02:02:40,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 193 flow [2024-11-23 02:02:40,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 193 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 02:02:40,518 INFO L231 Difference]: Finished difference. Result has 48 places, 26 transitions, 97 flow [2024-11-23 02:02:40,518 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} [2024-11-23 02:02:40,519 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2024-11-23 02:02:40,519 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 26 transitions, 97 flow [2024-11-23 02:02:40,519 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) [2024-11-23 02:02:40,519 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:40,519 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:40,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 02:02:40,723 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 [2024-11-23 02:02:40,724 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)] === [2024-11-23 02:02:40,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:40,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1335214088, now seen corresponding path program 1 times [2024-11-23 02:02:40,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:40,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683152685] [2024-11-23 02:02:40,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:40,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:40,822 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:40,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:40,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683152685] [2024-11-23 02:02:40,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683152685] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:02:40,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773703248] [2024-11-23 02:02:40,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:40,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:02:40,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:02:40,826 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) [2024-11-23 02:02:40,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 02:02:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:40,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:02:40,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:02:40,920 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:40,920 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:02:40,960 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:40,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773703248] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:02:40,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:02:40,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-23 02:02:40,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223057925] [2024-11-23 02:02:40,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:02:40,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 02:02:40,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:40,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 02:02:40,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-23 02:02:40,971 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 33 [2024-11-23 02:02:40,972 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) [2024-11-23 02:02:40,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:40,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 33 [2024-11-23 02:02:40,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:41,043 INFO L124 PetriNetUnfolderBase]: 155/323 cut-off events. [2024-11-23 02:02:41,044 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2024-11-23 02:02:41,044 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. [2024-11-23 02:02:41,045 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 25 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2024-11-23 02:02:41,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 40 transitions, 181 flow [2024-11-23 02:02:41,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 02:02:41,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 02:02:41,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-11-23 02:02:41,047 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5584415584415584 [2024-11-23 02:02:41,047 INFO L175 Difference]: Start difference. First operand has 48 places, 26 transitions, 97 flow. Second operand 7 states and 129 transitions. [2024-11-23 02:02:41,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 40 transitions, 181 flow [2024-11-23 02:02:41,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 40 transitions, 166 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-23 02:02:41,049 INFO L231 Difference]: Finished difference. Result has 46 places, 25 transitions, 86 flow [2024-11-23 02:02:41,049 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} [2024-11-23 02:02:41,049 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2024-11-23 02:02:41,049 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 25 transitions, 86 flow [2024-11-23 02:02:41,050 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) [2024-11-23 02:02:41,050 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:41,050 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:41,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 02:02:41,250 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 [2024-11-23 02:02:41,251 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)] === [2024-11-23 02:02:41,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:41,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1054474366, now seen corresponding path program 1 times [2024-11-23 02:02:41,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:41,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716860422] [2024-11-23 02:02:41,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:41,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:02:41,261 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:02:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:02:41,270 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:02:41,271 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-23 02:02:41,271 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-23 02:02:41,271 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-23 02:02:41,271 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-23 02:02:41,271 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-23 02:02:41,271 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-23 02:02:41,271 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-23 02:02:41,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 02:02:41,271 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:41,272 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-23 02:02:41,272 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-23 02:02:41,288 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-23 02:02:41,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 41 transitions, 118 flow [2024-11-23 02:02:41,294 INFO L124 PetriNetUnfolderBase]: 4/76 cut-off events. [2024-11-23 02:02:41,294 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-23 02:02:41,295 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. [2024-11-23 02:02:41,295 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 41 transitions, 118 flow [2024-11-23 02:02:41,295 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 111 flow [2024-11-23 02:02:41,296 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 02:02:41,296 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;@3d3fac03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 02:02:41,296 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-23 02:02:41,297 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 02:02:41,297 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-23 02:02:41,298 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 02:02:41,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:41,298 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-23 02:02:41,298 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)] === [2024-11-23 02:02:41,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:41,298 INFO L85 PathProgramCache]: Analyzing trace with hash 9452293, now seen corresponding path program 1 times [2024-11-23 02:02:41,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:41,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533855367] [2024-11-23 02:02:41,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:41,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:41,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:41,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:41,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533855367] [2024-11-23 02:02:41,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533855367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:41,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:41,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:02:41,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77616972] [2024-11-23 02:02:41,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:41,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 02:02:41,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:41,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 02:02:41,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 02:02:41,316 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 41 [2024-11-23 02:02:41,316 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) [2024-11-23 02:02:41,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:41,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 41 [2024-11-23 02:02:41,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:41,573 INFO L124 PetriNetUnfolderBase]: 1575/2859 cut-off events. [2024-11-23 02:02:41,574 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2024-11-23 02:02:41,579 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. [2024-11-23 02:02:41,593 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 24 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2024-11-23 02:02:41,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 175 flow [2024-11-23 02:02:41,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 02:02:41,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 02:02:41,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-11-23 02:02:41,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7073170731707317 [2024-11-23 02:02:41,594 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 111 flow. Second operand 3 states and 87 transitions. [2024-11-23 02:02:41,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 175 flow [2024-11-23 02:02:41,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 45 transitions, 170 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-23 02:02:41,596 INFO L231 Difference]: Finished difference. Result has 54 places, 40 transitions, 118 flow [2024-11-23 02:02:41,597 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} [2024-11-23 02:02:41,597 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-11-23 02:02:41,597 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 40 transitions, 118 flow [2024-11-23 02:02:41,597 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) [2024-11-23 02:02:41,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:41,598 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:41,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 02:02:41,598 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)] === [2024-11-23 02:02:41,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:41,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1861794512, now seen corresponding path program 1 times [2024-11-23 02:02:41,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:41,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117231416] [2024-11-23 02:02:41,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:41,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:41,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:41,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:41,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117231416] [2024-11-23 02:02:41,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117231416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:41,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:41,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:02:41,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389558740] [2024-11-23 02:02:41,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:41,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:02:41,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:41,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:02:41,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:02:41,625 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-23 02:02:41,626 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) [2024-11-23 02:02:41,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:41,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-23 02:02:41,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:41,851 INFO L124 PetriNetUnfolderBase]: 1803/3003 cut-off events. [2024-11-23 02:02:41,851 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2024-11-23 02:02:41,858 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. [2024-11-23 02:02:41,872 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 24 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-11-23 02:02:41,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 45 transitions, 184 flow [2024-11-23 02:02:41,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:02:41,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:02:41,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-11-23 02:02:41,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6097560975609756 [2024-11-23 02:02:41,874 INFO L175 Difference]: Start difference. First operand has 54 places, 40 transitions, 118 flow. Second operand 4 states and 100 transitions. [2024-11-23 02:02:41,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 45 transitions, 184 flow [2024-11-23 02:02:41,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 45 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 02:02:41,876 INFO L231 Difference]: Finished difference. Result has 55 places, 39 transitions, 122 flow [2024-11-23 02:02:41,876 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} [2024-11-23 02:02:41,876 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-11-23 02:02:41,876 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 122 flow [2024-11-23 02:02:41,877 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) [2024-11-23 02:02:41,877 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:41,877 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:41,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 02:02:41,877 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)] === [2024-11-23 02:02:41,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:41,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1881054707, now seen corresponding path program 1 times [2024-11-23 02:02:41,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:41,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646823411] [2024-11-23 02:02:41,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:41,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:41,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:41,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:41,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646823411] [2024-11-23 02:02:41,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646823411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:41,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:41,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:02:41,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926613556] [2024-11-23 02:02:41,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:41,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:02:41,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:41,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:02:41,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:02:41,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-23 02:02:41,907 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) [2024-11-23 02:02:41,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:41,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-23 02:02:41,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:42,131 INFO L124 PetriNetUnfolderBase]: 1799/2995 cut-off events. [2024-11-23 02:02:42,131 INFO L125 PetriNetUnfolderBase]: For 514/514 co-relation queries the response was YES. [2024-11-23 02:02:42,136 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. [2024-11-23 02:02:42,147 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 26 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-11-23 02:02:42,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 46 transitions, 196 flow [2024-11-23 02:02:42,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:02:42,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:02:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-23 02:02:42,148 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6219512195121951 [2024-11-23 02:02:42,149 INFO L175 Difference]: Start difference. First operand has 55 places, 39 transitions, 122 flow. Second operand 4 states and 102 transitions. [2024-11-23 02:02:42,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 46 transitions, 196 flow [2024-11-23 02:02:42,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 46 transitions, 186 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 02:02:42,151 INFO L231 Difference]: Finished difference. Result has 57 places, 40 transitions, 130 flow [2024-11-23 02:02:42,151 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} [2024-11-23 02:02:42,151 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-11-23 02:02:42,151 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 40 transitions, 130 flow [2024-11-23 02:02:42,152 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) [2024-11-23 02:02:42,152 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:42,152 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:42,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 02:02:42,152 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)] === [2024-11-23 02:02:42,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:42,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2062158869, now seen corresponding path program 1 times [2024-11-23 02:02:42,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:42,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451590530] [2024-11-23 02:02:42,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:42,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:42,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:02:42,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:42,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451590530] [2024-11-23 02:02:42,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451590530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:42,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:42,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 02:02:42,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248539452] [2024-11-23 02:02:42,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:42,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:02:42,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:42,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:02:42,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:02:42,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-23 02:02:42,187 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) [2024-11-23 02:02:42,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:42,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-23 02:02:42,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:42,471 INFO L124 PetriNetUnfolderBase]: 2487/3935 cut-off events. [2024-11-23 02:02:42,471 INFO L125 PetriNetUnfolderBase]: For 360/360 co-relation queries the response was YES. [2024-11-23 02:02:42,477 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. [2024-11-23 02:02:42,495 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 35 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2024-11-23 02:02:42,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 54 transitions, 234 flow [2024-11-23 02:02:42,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:02:42,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:02:42,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-11-23 02:02:42,496 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6707317073170732 [2024-11-23 02:02:42,496 INFO L175 Difference]: Start difference. First operand has 57 places, 40 transitions, 130 flow. Second operand 4 states and 110 transitions. [2024-11-23 02:02:42,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 54 transitions, 234 flow [2024-11-23 02:02:42,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 54 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 02:02:42,498 INFO L231 Difference]: Finished difference. Result has 60 places, 42 transitions, 148 flow [2024-11-23 02:02:42,498 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} [2024-11-23 02:02:42,498 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2024-11-23 02:02:42,498 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 42 transitions, 148 flow [2024-11-23 02:02:42,499 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) [2024-11-23 02:02:42,499 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:42,499 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:42,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 02:02:42,499 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)] === [2024-11-23 02:02:42,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:42,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1437635334, now seen corresponding path program 1 times [2024-11-23 02:02:42,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:42,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819973436] [2024-11-23 02:02:42,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:42,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:42,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 02:02:42,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:42,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819973436] [2024-11-23 02:02:42,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819973436] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:02:42,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978850241] [2024-11-23 02:02:42,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:42,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:02:42,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:02:42,550 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) [2024-11-23 02:02:42,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 02:02:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:42,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:02:42,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:02:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 02:02:42,645 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:02:42,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 02:02:42,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978850241] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:02:42,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:02:42,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-23 02:02:42,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324170662] [2024-11-23 02:02:42,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:02:42,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 02:02:42,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:42,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 02:02:42,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-23 02:02:42,685 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-23 02:02:42,685 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) [2024-11-23 02:02:42,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:42,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-23 02:02:42,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:43,031 INFO L124 PetriNetUnfolderBase]: 2091/3379 cut-off events. [2024-11-23 02:02:43,031 INFO L125 PetriNetUnfolderBase]: For 644/644 co-relation queries the response was YES. [2024-11-23 02:02:43,040 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. [2024-11-23 02:02:43,055 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 47 selfloop transitions, 8 changer transitions 0/72 dead transitions. [2024-11-23 02:02:43,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 72 transitions, 324 flow [2024-11-23 02:02:43,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 02:02:43,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-23 02:02:43,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-11-23 02:02:43,056 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6067073170731707 [2024-11-23 02:02:43,056 INFO L175 Difference]: Start difference. First operand has 60 places, 42 transitions, 148 flow. Second operand 8 states and 199 transitions. [2024-11-23 02:02:43,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 72 transitions, 324 flow [2024-11-23 02:02:43,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 72 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 02:02:43,064 INFO L231 Difference]: Finished difference. Result has 70 places, 46 transitions, 197 flow [2024-11-23 02:02:43,064 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} [2024-11-23 02:02:43,064 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2024-11-23 02:02:43,064 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 46 transitions, 197 flow [2024-11-23 02:02:43,065 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) [2024-11-23 02:02:43,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:43,065 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:43,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 02:02:43,267 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 [2024-11-23 02:02:43,268 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)] === [2024-11-23 02:02:43,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:43,269 INFO L85 PathProgramCache]: Analyzing trace with hash 2032764145, now seen corresponding path program 1 times [2024-11-23 02:02:43,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:43,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489417352] [2024-11-23 02:02:43,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:43,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:43,314 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:43,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:43,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489417352] [2024-11-23 02:02:43,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489417352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:02:43,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63447945] [2024-11-23 02:02:43,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:43,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:02:43,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:02:43,317 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) [2024-11-23 02:02:43,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 02:02:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:43,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:02:43,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:02:43,388 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:43,388 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:02:43,428 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:43,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63447945] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:02:43,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:02:43,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-23 02:02:43,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074712212] [2024-11-23 02:02:43,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:02:43,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 02:02:43,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:43,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 02:02:43,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-23 02:02:43,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-11-23 02:02:43,440 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) [2024-11-23 02:02:43,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:43,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-11-23 02:02:43,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:43,748 INFO L124 PetriNetUnfolderBase]: 1867/3041 cut-off events. [2024-11-23 02:02:43,748 INFO L125 PetriNetUnfolderBase]: For 1374/1374 co-relation queries the response was YES. [2024-11-23 02:02:43,753 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. [2024-11-23 02:02:43,760 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 48 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2024-11-23 02:02:43,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 354 flow [2024-11-23 02:02:43,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 02:02:43,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-23 02:02:43,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-11-23 02:02:43,765 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5880758807588076 [2024-11-23 02:02:43,765 INFO L175 Difference]: Start difference. First operand has 70 places, 46 transitions, 197 flow. Second operand 9 states and 217 transitions. [2024-11-23 02:02:43,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 354 flow [2024-11-23 02:02:43,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 72 transitions, 340 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-23 02:02:43,770 INFO L231 Difference]: Finished difference. Result has 72 places, 44 transitions, 184 flow [2024-11-23 02:02:43,770 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} [2024-11-23 02:02:43,771 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 20 predicate places. [2024-11-23 02:02:43,771 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 44 transitions, 184 flow [2024-11-23 02:02:43,771 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) [2024-11-23 02:02:43,771 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:43,771 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:43,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 02:02:43,971 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 [2024-11-23 02:02:43,973 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)] === [2024-11-23 02:02:43,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:43,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1734797716, now seen corresponding path program 1 times [2024-11-23 02:02:43,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:43,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817727861] [2024-11-23 02:02:43,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:43,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:02:43,988 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:02:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:02:44,002 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:02:44,002 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-23 02:02:44,002 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-23 02:02:44,002 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-23 02:02:44,002 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-23 02:02:44,002 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-23 02:02:44,002 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-23 02:02:44,002 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-23 02:02:44,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 02:02:44,003 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:44,003 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-23 02:02:44,003 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-23 02:02:44,035 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-23 02:02:44,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 49 transitions, 154 flow [2024-11-23 02:02:44,048 INFO L124 PetriNetUnfolderBase]: 5/98 cut-off events. [2024-11-23 02:02:44,049 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-23 02:02:44,049 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. [2024-11-23 02:02:44,049 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 49 transitions, 154 flow [2024-11-23 02:02:44,049 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 47 transitions, 146 flow [2024-11-23 02:02:44,054 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 02:02:44,055 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;@3d3fac03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 02:02:44,055 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-23 02:02:44,056 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 02:02:44,056 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-23 02:02:44,056 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 02:02:44,056 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:44,056 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-23 02:02:44,056 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)] === [2024-11-23 02:02:44,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:44,056 INFO L85 PathProgramCache]: Analyzing trace with hash 10960709, now seen corresponding path program 1 times [2024-11-23 02:02:44,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:44,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054356363] [2024-11-23 02:02:44,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:44,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:44,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:44,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:44,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054356363] [2024-11-23 02:02:44,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054356363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:44,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:44,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:02:44,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684160567] [2024-11-23 02:02:44,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:44,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 02:02:44,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:44,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 02:02:44,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 02:02:44,089 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 49 [2024-11-23 02:02:44,089 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) [2024-11-23 02:02:44,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:44,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 49 [2024-11-23 02:02:44,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:45,251 INFO L124 PetriNetUnfolderBase]: 8679/13867 cut-off events. [2024-11-23 02:02:45,251 INFO L125 PetriNetUnfolderBase]: For 2844/2844 co-relation queries the response was YES. [2024-11-23 02:02:45,281 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. [2024-11-23 02:02:45,346 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 28 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2024-11-23 02:02:45,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 53 transitions, 218 flow [2024-11-23 02:02:45,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 02:02:45,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 02:02:45,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-23 02:02:45,348 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7006802721088435 [2024-11-23 02:02:45,348 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 146 flow. Second operand 3 states and 103 transitions. [2024-11-23 02:02:45,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 53 transitions, 218 flow [2024-11-23 02:02:45,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 53 transitions, 205 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-23 02:02:45,356 INFO L231 Difference]: Finished difference. Result has 66 places, 48 transitions, 145 flow [2024-11-23 02:02:45,356 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} [2024-11-23 02:02:45,356 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 2 predicate places. [2024-11-23 02:02:45,356 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 48 transitions, 145 flow [2024-11-23 02:02:45,357 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) [2024-11-23 02:02:45,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:45,357 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:45,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 02:02:45,357 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)] === [2024-11-23 02:02:45,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:45,357 INFO L85 PathProgramCache]: Analyzing trace with hash 132272654, now seen corresponding path program 1 times [2024-11-23 02:02:45,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:45,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498835597] [2024-11-23 02:02:45,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:45,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:45,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:45,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498835597] [2024-11-23 02:02:45,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498835597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:45,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:45,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:02:45,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485298650] [2024-11-23 02:02:45,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:45,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:02:45,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:45,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:02:45,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:02:45,381 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-23 02:02:45,381 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) [2024-11-23 02:02:45,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:45,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-23 02:02:45,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:46,528 INFO L124 PetriNetUnfolderBase]: 9931/14779 cut-off events. [2024-11-23 02:02:46,529 INFO L125 PetriNetUnfolderBase]: For 2000/2000 co-relation queries the response was YES. [2024-11-23 02:02:46,569 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. [2024-11-23 02:02:46,619 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 30 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2024-11-23 02:02:46,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 55 transitions, 227 flow [2024-11-23 02:02:46,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:02:46,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:02:46,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-11-23 02:02:46,623 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6224489795918368 [2024-11-23 02:02:46,623 INFO L175 Difference]: Start difference. First operand has 66 places, 48 transitions, 145 flow. Second operand 4 states and 122 transitions. [2024-11-23 02:02:46,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 55 transitions, 227 flow [2024-11-23 02:02:46,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 55 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 02:02:46,628 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 149 flow [2024-11-23 02:02:46,628 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} [2024-11-23 02:02:46,629 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 3 predicate places. [2024-11-23 02:02:46,629 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 149 flow [2024-11-23 02:02:46,629 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) [2024-11-23 02:02:46,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:46,629 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:46,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 02:02:46,630 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)] === [2024-11-23 02:02:46,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:46,630 INFO L85 PathProgramCache]: Analyzing trace with hash -194514656, now seen corresponding path program 1 times [2024-11-23 02:02:46,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:46,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009707160] [2024-11-23 02:02:46,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:46,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:46,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:46,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:46,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009707160] [2024-11-23 02:02:46,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009707160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:46,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:46,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:02:46,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958232013] [2024-11-23 02:02:46,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:46,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:02:46,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:46,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:02:46,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:02:46,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-23 02:02:46,654 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) [2024-11-23 02:02:46,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:46,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-23 02:02:46,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:47,734 INFO L124 PetriNetUnfolderBase]: 9927/14769 cut-off events. [2024-11-23 02:02:47,734 INFO L125 PetriNetUnfolderBase]: For 2850/2850 co-relation queries the response was YES. [2024-11-23 02:02:47,776 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. [2024-11-23 02:02:47,830 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 30 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2024-11-23 02:02:47,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 54 transitions, 231 flow [2024-11-23 02:02:47,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:02:47,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:02:47,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-11-23 02:02:47,831 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6224489795918368 [2024-11-23 02:02:47,832 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 149 flow. Second operand 4 states and 122 transitions. [2024-11-23 02:02:47,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 54 transitions, 231 flow [2024-11-23 02:02:47,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 54 transitions, 221 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 02:02:47,836 INFO L231 Difference]: Finished difference. Result has 69 places, 48 transitions, 157 flow [2024-11-23 02:02:47,837 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} [2024-11-23 02:02:47,837 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 5 predicate places. [2024-11-23 02:02:47,837 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 48 transitions, 157 flow [2024-11-23 02:02:47,837 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) [2024-11-23 02:02:47,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:47,837 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:47,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 02:02:47,838 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)] === [2024-11-23 02:02:47,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:47,838 INFO L85 PathProgramCache]: Analyzing trace with hash -874879479, now seen corresponding path program 1 times [2024-11-23 02:02:47,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:47,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121583997] [2024-11-23 02:02:47,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:47,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:02:47,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:47,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121583997] [2024-11-23 02:02:47,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121583997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:47,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:47,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 02:02:47,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097174201] [2024-11-23 02:02:47,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:47,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:02:47,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:47,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:02:47,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:02:47,867 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-23 02:02:47,867 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) [2024-11-23 02:02:47,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:47,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-23 02:02:47,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:49,485 INFO L124 PetriNetUnfolderBase]: 13687/19551 cut-off events. [2024-11-23 02:02:49,485 INFO L125 PetriNetUnfolderBase]: For 2184/2184 co-relation queries the response was YES. [2024-11-23 02:02:49,540 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. [2024-11-23 02:02:49,607 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 43 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2024-11-23 02:02:49,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 285 flow [2024-11-23 02:02:49,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:02:49,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:02:49,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-11-23 02:02:49,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6836734693877551 [2024-11-23 02:02:49,608 INFO L175 Difference]: Start difference. First operand has 69 places, 48 transitions, 157 flow. Second operand 4 states and 134 transitions. [2024-11-23 02:02:49,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 285 flow [2024-11-23 02:02:49,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 66 transitions, 281 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 02:02:49,617 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 175 flow [2024-11-23 02:02:49,617 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} [2024-11-23 02:02:49,617 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 8 predicate places. [2024-11-23 02:02:49,617 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 175 flow [2024-11-23 02:02:49,618 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) [2024-11-23 02:02:49,618 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:49,618 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:49,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-23 02:02:49,618 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)] === [2024-11-23 02:02:49,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:49,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1672658375, now seen corresponding path program 1 times [2024-11-23 02:02:49,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:49,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022572324] [2024-11-23 02:02:49,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:49,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:49,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 02:02:49,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:49,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022572324] [2024-11-23 02:02:49,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022572324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:02:49,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627043547] [2024-11-23 02:02:49,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:49,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:02:49,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:02:49,657 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) [2024-11-23 02:02:49,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 02:02:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:49,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:02:49,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:02:49,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 02:02:49,757 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:02:49,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 02:02:49,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627043547] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:02:49,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:02:49,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-23 02:02:49,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076237559] [2024-11-23 02:02:49,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:02:49,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 02:02:49,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:49,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 02:02:49,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-23 02:02:49,798 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-23 02:02:49,798 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) [2024-11-23 02:02:49,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:49,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-23 02:02:49,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:51,480 INFO L124 PetriNetUnfolderBase]: 12267/17961 cut-off events. [2024-11-23 02:02:51,480 INFO L125 PetriNetUnfolderBase]: For 3492/3492 co-relation queries the response was YES. [2024-11-23 02:02:51,539 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. [2024-11-23 02:02:51,604 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 53 selfloop transitions, 8 changer transitions 0/82 dead transitions. [2024-11-23 02:02:51,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 82 transitions, 367 flow [2024-11-23 02:02:51,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 02:02:51,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-23 02:02:51,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 237 transitions. [2024-11-23 02:02:51,606 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6045918367346939 [2024-11-23 02:02:51,606 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 175 flow. Second operand 8 states and 237 transitions. [2024-11-23 02:02:51,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 82 transitions, 367 flow [2024-11-23 02:02:51,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 82 transitions, 365 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 02:02:51,659 INFO L231 Difference]: Finished difference. Result has 82 places, 54 transitions, 224 flow [2024-11-23 02:02:51,659 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} [2024-11-23 02:02:51,660 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 18 predicate places. [2024-11-23 02:02:51,660 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 54 transitions, 224 flow [2024-11-23 02:02:51,660 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) [2024-11-23 02:02:51,660 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:51,660 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:51,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 02:02:51,864 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 [2024-11-23 02:02:51,865 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)] === [2024-11-23 02:02:51,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:51,866 INFO L85 PathProgramCache]: Analyzing trace with hash 303522530, now seen corresponding path program 1 times [2024-11-23 02:02:51,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:51,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217299641] [2024-11-23 02:02:51,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:51,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:51,917 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:51,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:51,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217299641] [2024-11-23 02:02:51,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217299641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:02:51,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946553335] [2024-11-23 02:02:51,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:51,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:02:51,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:02:51,922 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) [2024-11-23 02:02:51,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 02:02:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:51,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 02:02:51,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:02:51,995 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:51,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:02:52,035 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:52,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946553335] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:02:52,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:02:52,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-23 02:02:52,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653205647] [2024-11-23 02:02:52,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:02:52,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 02:02:52,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:52,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 02:02:52,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-23 02:02:52,047 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-23 02:02:52,047 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) [2024-11-23 02:02:52,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:52,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-23 02:02:52,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:53,344 INFO L124 PetriNetUnfolderBase]: 11019/16377 cut-off events. [2024-11-23 02:02:53,345 INFO L125 PetriNetUnfolderBase]: For 6398/6398 co-relation queries the response was YES. [2024-11-23 02:02:53,386 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. [2024-11-23 02:02:53,442 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 75 selfloop transitions, 9 changer transitions 0/105 dead transitions. [2024-11-23 02:02:53,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 105 transitions, 521 flow [2024-11-23 02:02:53,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 02:02:53,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 02:02:53,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 303 transitions. [2024-11-23 02:02:53,444 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6183673469387755 [2024-11-23 02:02:53,444 INFO L175 Difference]: Start difference. First operand has 82 places, 54 transitions, 224 flow. Second operand 10 states and 303 transitions. [2024-11-23 02:02:53,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 105 transitions, 521 flow [2024-11-23 02:02:53,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 105 transitions, 505 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-23 02:02:53,485 INFO L231 Difference]: Finished difference. Result has 85 places, 54 transitions, 227 flow [2024-11-23 02:02:53,485 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} [2024-11-23 02:02:53,486 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 21 predicate places. [2024-11-23 02:02:53,486 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 54 transitions, 227 flow [2024-11-23 02:02:53,486 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) [2024-11-23 02:02:53,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:53,486 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:53,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 02:02:53,689 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 [2024-11-23 02:02:53,690 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)] === [2024-11-23 02:02:53,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:53,690 INFO L85 PathProgramCache]: Analyzing trace with hash 337308279, now seen corresponding path program 1 times [2024-11-23 02:02:53,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:53,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067298836] [2024-11-23 02:02:53,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:53,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:53,768 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 02:02:53,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:53,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067298836] [2024-11-23 02:02:53,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067298836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 02:02:53,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282975665] [2024-11-23 02:02:53,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:53,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 02:02:53,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:02:53,775 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) [2024-11-23 02:02:53,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 02:02:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:53,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 02:02:53,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:02:53,972 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 02:02:53,972 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 02:02:54,071 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 02:02:54,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282975665] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 02:02:54,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 02:02:54,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-11-23 02:02:54,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709168655] [2024-11-23 02:02:54,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 02:02:54,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-23 02:02:54,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:54,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-23 02:02:54,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2024-11-23 02:02:54,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 49 [2024-11-23 02:02:54,091 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) [2024-11-23 02:02:54,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:54,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 49 [2024-11-23 02:02:54,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:02:54,904 INFO L124 PetriNetUnfolderBase]: 5835/8475 cut-off events. [2024-11-23 02:02:54,904 INFO L125 PetriNetUnfolderBase]: For 6140/6140 co-relation queries the response was YES. [2024-11-23 02:02:54,925 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. [2024-11-23 02:02:54,959 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 65 selfloop transitions, 9 changer transitions 0/92 dead transitions. [2024-11-23 02:02:54,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 92 transitions, 437 flow [2024-11-23 02:02:54,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 02:02:54,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 02:02:54,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 318 transitions. [2024-11-23 02:02:54,961 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5899814471243042 [2024-11-23 02:02:54,962 INFO L175 Difference]: Start difference. First operand has 85 places, 54 transitions, 227 flow. Second operand 11 states and 318 transitions. [2024-11-23 02:02:54,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 92 transitions, 437 flow [2024-11-23 02:02:54,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 92 transitions, 403 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-11-23 02:02:54,970 INFO L231 Difference]: Finished difference. Result has 78 places, 46 transitions, 175 flow [2024-11-23 02:02:54,970 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} [2024-11-23 02:02:54,970 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 14 predicate places. [2024-11-23 02:02:54,970 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 46 transitions, 175 flow [2024-11-23 02:02:54,971 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) [2024-11-23 02:02:54,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:54,971 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:54,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 02:02:55,171 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 [2024-11-23 02:02:55,172 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)] === [2024-11-23 02:02:55,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:55,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1652814120, now seen corresponding path program 1 times [2024-11-23 02:02:55,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:55,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771552768] [2024-11-23 02:02:55,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:55,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:02:55,185 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:02:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:02:55,206 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:02:55,207 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-23 02:02:55,207 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-23 02:02:55,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-23 02:02:55,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-23 02:02:55,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-23 02:02:55,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-23 02:02:55,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-23 02:02:55,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-23 02:02:55,208 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:02:55,208 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-23 02:02:55,208 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-23 02:02:55,236 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-23 02:02:55,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 57 transitions, 194 flow [2024-11-23 02:02:55,247 INFO L124 PetriNetUnfolderBase]: 6/120 cut-off events. [2024-11-23 02:02:55,247 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-23 02:02:55,247 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. [2024-11-23 02:02:55,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 57 transitions, 194 flow [2024-11-23 02:02:55,248 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 55 transitions, 185 flow [2024-11-23 02:02:55,250 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 02:02:55,250 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;@3d3fac03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 02:02:55,251 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-23 02:02:55,252 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 02:02:55,252 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-23 02:02:55,253 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 02:02:55,253 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:02:55,253 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-23 02:02:55,253 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)] === [2024-11-23 02:02:55,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:02:55,253 INFO L85 PathProgramCache]: Analyzing trace with hash 12715397, now seen corresponding path program 1 times [2024-11-23 02:02:55,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:02:55,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879659271] [2024-11-23 02:02:55,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:02:55,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:02:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:02:55,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:02:55,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:02:55,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879659271] [2024-11-23 02:02:55,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879659271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:02:55,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:02:55,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:02:55,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849344692] [2024-11-23 02:02:55,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:02:55,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 02:02:55,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:02:55,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 02:02:55,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 02:02:55,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 57 [2024-11-23 02:02:55,274 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) [2024-11-23 02:02:55,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:02:55,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 57 [2024-11-23 02:02:55,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:03:00,909 INFO L124 PetriNetUnfolderBase]: 44263/65067 cut-off events. [2024-11-23 02:03:00,909 INFO L125 PetriNetUnfolderBase]: For 19228/19228 co-relation queries the response was YES. [2024-11-23 02:03:01,159 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. [2024-11-23 02:03:01,411 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 32 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2024-11-23 02:03:01,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 61 transitions, 265 flow [2024-11-23 02:03:01,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 02:03:01,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 02:03:01,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-11-23 02:03:01,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.695906432748538 [2024-11-23 02:03:01,412 INFO L175 Difference]: Start difference. First operand has 76 places, 55 transitions, 185 flow. Second operand 3 states and 119 transitions. [2024-11-23 02:03:01,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 61 transitions, 265 flow [2024-11-23 02:03:01,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 61 transitions, 240 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-23 02:03:01,470 INFO L231 Difference]: Finished difference. Result has 78 places, 56 transitions, 172 flow [2024-11-23 02:03:01,470 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} [2024-11-23 02:03:01,470 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2024-11-23 02:03:01,470 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 56 transitions, 172 flow [2024-11-23 02:03:01,471 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) [2024-11-23 02:03:01,471 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:03:01,471 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:03:01,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-23 02:03:01,471 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)] === [2024-11-23 02:03:01,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:03:01,471 INFO L85 PathProgramCache]: Analyzing trace with hash 873102324, now seen corresponding path program 1 times [2024-11-23 02:03:01,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:03:01,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267229375] [2024-11-23 02:03:01,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:03:01,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:03:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:03:01,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:03:01,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:03:01,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267229375] [2024-11-23 02:03:01,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267229375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:03:01,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:03:01,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:03:01,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568633712] [2024-11-23 02:03:01,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:03:01,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:03:01,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:03:01,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:03:01,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:03:01,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 57 [2024-11-23 02:03:01,497 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) [2024-11-23 02:03:01,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:03:01,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 57 [2024-11-23 02:03:01,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:03:07,488 INFO L124 PetriNetUnfolderBase]: 50635/68773 cut-off events. [2024-11-23 02:03:07,488 INFO L125 PetriNetUnfolderBase]: For 12112/12112 co-relation queries the response was YES. [2024-11-23 02:03:07,787 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. [2024-11-23 02:03:08,047 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 36 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2024-11-23 02:03:08,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 65 transitions, 270 flow [2024-11-23 02:03:08,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:03:08,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:03:08,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2024-11-23 02:03:08,050 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-11-23 02:03:08,050 INFO L175 Difference]: Start difference. First operand has 78 places, 56 transitions, 172 flow. Second operand 4 states and 144 transitions. [2024-11-23 02:03:08,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 65 transitions, 270 flow [2024-11-23 02:03:08,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 65 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 02:03:08,101 INFO L231 Difference]: Finished difference. Result has 79 places, 55 transitions, 176 flow [2024-11-23 02:03:08,101 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} [2024-11-23 02:03:08,101 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2024-11-23 02:03:08,101 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 55 transitions, 176 flow [2024-11-23 02:03:08,101 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) [2024-11-23 02:03:08,101 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:03:08,102 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:03:08,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-23 02:03:08,102 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)] === [2024-11-23 02:03:08,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:03:08,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1296368691, now seen corresponding path program 1 times [2024-11-23 02:03:08,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:03:08,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314806377] [2024-11-23 02:03:08,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:03:08,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:03:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:03:08,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:03:08,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:03:08,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314806377] [2024-11-23 02:03:08,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314806377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:03:08,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:03:08,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 02:03:08,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534144380] [2024-11-23 02:03:08,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:03:08,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:03:08,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:03:08,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:03:08,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:03:08,130 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 57 [2024-11-23 02:03:08,131 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) [2024-11-23 02:03:08,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:03:08,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 57 [2024-11-23 02:03:08,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:03:13,174 INFO L124 PetriNetUnfolderBase]: 50631/70065 cut-off events. [2024-11-23 02:03:13,174 INFO L125 PetriNetUnfolderBase]: For 15522/15522 co-relation queries the response was YES. [2024-11-23 02:03:13,446 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. [2024-11-23 02:03:14,244 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 34 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-11-23 02:03:14,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 62 transitions, 266 flow [2024-11-23 02:03:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 02:03:14,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 02:03:14,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2024-11-23 02:03:14,245 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2024-11-23 02:03:14,245 INFO L175 Difference]: Start difference. First operand has 79 places, 55 transitions, 176 flow. Second operand 4 states and 142 transitions. [2024-11-23 02:03:14,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 62 transitions, 266 flow [2024-11-23 02:03:14,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 62 transitions, 256 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 02:03:14,271 INFO L231 Difference]: Finished difference. Result has 81 places, 56 transitions, 184 flow [2024-11-23 02:03:14,271 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} [2024-11-23 02:03:14,272 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 5 predicate places. [2024-11-23 02:03:14,272 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 56 transitions, 184 flow [2024-11-23 02:03:14,272 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) [2024-11-23 02:03:14,272 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 02:03:14,272 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:03:14,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-23 02:03:14,272 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)] === [2024-11-23 02:03:14,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:03:14,273 INFO L85 PathProgramCache]: Analyzing trace with hash -225840337, now seen corresponding path program 1 times [2024-11-23 02:03:14,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:03:14,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377629352] [2024-11-23 02:03:14,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:03:14,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:03:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:03:14,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 02:03:14,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:03:14,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377629352] [2024-11-23 02:03:14,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377629352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:03:14,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:03:14,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 02:03:14,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550732340] [2024-11-23 02:03:14,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:03:14,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 02:03:14,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:03:14,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 02:03:14,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 02:03:14,299 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 57 [2024-11-23 02:03:14,299 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) [2024-11-23 02:03:14,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 02:03:14,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 57 [2024-11-23 02:03:14,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 02:03:21,155 INFO L124 PetriNetUnfolderBase]: 69751/93279 cut-off events. [2024-11-23 02:03:21,155 INFO L125 PetriNetUnfolderBase]: For 12808/12808 co-relation queries the response was YES. [2024-11-23 02:03:21,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186583 conditions, 93279 events. 69751/93279 cut-off events. For 12808/12808 co-relation queries the response was YES. Maximal size of possible extension queue 3091. Compared 601860 event pairs, 55643 based on Foata normal form. 1364/91916 useless extension candidates. Maximal degree in co-relation 85776. Up to 69286 conditions per place.