./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/triangular-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/triangular-2.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 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:22:03,872 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:22:03,917 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:22:03,925 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:22:03,926 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:22:03,948 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:22:03,949 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:22:03,949 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:22:03,949 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:22:03,949 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:22:03,949 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:22:03,949 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:22:03,949 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:22:03,949 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:22:03,950 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:22:03,950 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:22:03,950 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:22:03,950 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:22:03,950 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:22:03,950 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:22:03,950 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:22:03,950 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:22:03,950 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:22:03,950 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:22:03,950 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:22:03,950 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:22:03,950 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:22:03,950 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:22:03,950 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:22:03,950 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:22:03,950 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:22:03,950 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:22:03,951 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:22:03,951 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:22:03,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:22:03,951 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:22:03,951 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:22:03,951 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:22:03,951 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:22:03,951 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:22:03,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:22:03,951 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:22:03,951 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:22:03,951 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:22:03,951 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:22:03,951 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 [2025-03-09 06:22:04,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:22:04,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:22:04,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:22:04,177 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:22:04,177 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:22:04,178 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-2.i [2025-03-09 06:22:05,302 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51291370e/01a770ea9112465089df800b1c64a557/FLAG041bf900e [2025-03-09 06:22:05,595 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:22:05,598 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-2.i [2025-03-09 06:22:05,611 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51291370e/01a770ea9112465089df800b1c64a557/FLAG041bf900e [2025-03-09 06:22:05,856 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51291370e/01a770ea9112465089df800b1c64a557 [2025-03-09 06:22:05,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:22:05,859 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:22:05,860 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:22:05,860 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:22:05,863 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:22:05,864 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:22:05" (1/1) ... [2025-03-09 06:22:05,865 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dae9aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:05, skipping insertion in model container [2025-03-09 06:22:05,865 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:22:05" (1/1) ... [2025-03-09 06:22:05,892 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:22:06,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:22:06,151 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:22:06,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:22:06,211 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:22:06,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:06 WrapperNode [2025-03-09 06:22:06,212 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:22:06,213 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:22:06,213 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:22:06,213 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:22:06,217 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:06" (1/1) ... [2025-03-09 06:22:06,228 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:06" (1/1) ... [2025-03-09 06:22:06,241 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2025-03-09 06:22:06,241 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:22:06,242 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:22:06,242 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:22:06,242 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:22:06,246 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:06" (1/1) ... [2025-03-09 06:22:06,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:06" (1/1) ... [2025-03-09 06:22:06,248 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:06" (1/1) ... [2025-03-09 06:22:06,255 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-09 06:22:06,255 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:06" (1/1) ... [2025-03-09 06:22:06,256 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:06" (1/1) ... [2025-03-09 06:22:06,258 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:06" (1/1) ... [2025-03-09 06:22:06,259 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:06" (1/1) ... [2025-03-09 06:22:06,259 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:06" (1/1) ... [2025-03-09 06:22:06,260 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:06" (1/1) ... [2025-03-09 06:22:06,261 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:22:06,261 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:22:06,262 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:22:06,262 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:22:06,262 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:06" (1/1) ... [2025-03-09 06:22:06,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:22:06,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:22:06,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 06:22:06,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 06:22:06,308 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-03-09 06:22:06,308 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-03-09 06:22:06,308 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-03-09 06:22:06,308 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-03-09 06:22:06,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 06:22:06,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:22:06,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:22:06,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 06:22:06,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:22:06,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:22:06,310 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:22:06,380 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:22:06,382 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:22:06,487 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:22:06,487 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:22:06,570 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:22:06,570 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:22:06,571 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:22:06 BoogieIcfgContainer [2025-03-09 06:22:06,571 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:22:06,573 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:22:06,573 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:22:06,577 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:22:06,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:22:05" (1/3) ... [2025-03-09 06:22:06,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a447a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:22:06, skipping insertion in model container [2025-03-09 06:22:06,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:22:06" (2/3) ... [2025-03-09 06:22:06,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a447a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:22:06, skipping insertion in model container [2025-03-09 06:22:06,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:22:06" (3/3) ... [2025-03-09 06:22:06,580 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2025-03-09 06:22:06,593 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:22:06,595 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-2.i that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-03-09 06:22:06,595 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:22:06,634 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 06:22:06,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 72 flow [2025-03-09 06:22:06,687 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2025-03-09 06:22:06,689 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:22:06,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 2/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 76 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2025-03-09 06:22:06,692 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 72 flow [2025-03-09 06:22:06,695 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 30 transitions, 66 flow [2025-03-09 06:22:06,702 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:22:06,709 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;@64ec2c51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:22:06,710 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-03-09 06:22:06,714 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:22:06,714 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-03-09 06:22:06,714 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:22:06,714 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:06,717 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 06:22:06,717 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:06,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:06,721 INFO L85 PathProgramCache]: Analyzing trace with hash 185325867, now seen corresponding path program 1 times [2025-03-09 06:22:06,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:06,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324421997] [2025-03-09 06:22:06,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:06,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:06,785 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 06:22:06,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 06:22:06,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:06,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:06,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:06,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:06,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324421997] [2025-03-09 06:22:06,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324421997] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:06,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:06,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:22:06,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432208921] [2025-03-09 06:22:06,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:06,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:22:06,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:06,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:22:06,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:22:06,911 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:06,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:06,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:06,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:06,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:07,120 INFO L124 PetriNetUnfolderBase]: 510/941 cut-off events. [2025-03-09 06:22:07,120 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-09 06:22:07,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1758 conditions, 941 events. 510/941 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4953 event pairs, 208 based on Foata normal form. 0/715 useless extension candidates. Maximal degree in co-relation 1748. Up to 421 conditions per place. [2025-03-09 06:22:07,129 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 31 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2025-03-09 06:22:07,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 162 flow [2025-03-09 06:22:07,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:22:07,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:22:07,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2025-03-09 06:22:07,146 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2025-03-09 06:22:07,147 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 66 flow. Second operand 3 states and 71 transitions. [2025-03-09 06:22:07,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 162 flow [2025-03-09 06:22:07,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:22:07,153 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 86 flow [2025-03-09 06:22:07,154 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2025-03-09 06:22:07,157 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2025-03-09 06:22:07,157 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 86 flow [2025-03-09 06:22:07,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:07,158 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:07,158 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-09 06:22:07,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:22:07,158 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:07,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:07,158 INFO L85 PathProgramCache]: Analyzing trace with hash 185325868, now seen corresponding path program 1 times [2025-03-09 06:22:07,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:07,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429320364] [2025-03-09 06:22:07,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:07,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:07,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-09 06:22:07,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-09 06:22:07,179 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:07,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:07,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:07,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:07,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429320364] [2025-03-09 06:22:07,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429320364] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:07,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:07,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:22:07,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674428932] [2025-03-09 06:22:07,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:07,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:22:07,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:07,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:22:07,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:22:07,205 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:07,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:07,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:07,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:07,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:07,316 INFO L124 PetriNetUnfolderBase]: 499/971 cut-off events. [2025-03-09 06:22:07,316 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2025-03-09 06:22:07,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1955 conditions, 971 events. 499/971 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5049 event pairs, 182 based on Foata normal form. 26/890 useless extension candidates. Maximal degree in co-relation 1943. Up to 466 conditions per place. [2025-03-09 06:22:07,323 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 31 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2025-03-09 06:22:07,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 45 transitions, 186 flow [2025-03-09 06:22:07,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:22:07,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:22:07,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2025-03-09 06:22:07,326 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2025-03-09 06:22:07,326 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 86 flow. Second operand 3 states and 70 transitions. [2025-03-09 06:22:07,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 45 transitions, 186 flow [2025-03-09 06:22:07,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:22:07,329 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 100 flow [2025-03-09 06:22:07,330 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2025-03-09 06:22:07,331 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2025-03-09 06:22:07,331 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 100 flow [2025-03-09 06:22:07,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:07,331 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:07,331 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:07,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 06:22:07,331 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:07,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:07,332 INFO L85 PathProgramCache]: Analyzing trace with hash 2004506799, now seen corresponding path program 1 times [2025-03-09 06:22:07,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:07,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720843028] [2025-03-09 06:22:07,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:07,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:07,345 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:22:07,349 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:22:07,349 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:07,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:07,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:07,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:07,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720843028] [2025-03-09 06:22:07,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720843028] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:07,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:07,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:22:07,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662739435] [2025-03-09 06:22:07,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:07,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:22:07,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:07,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:22:07,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:22:07,436 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-09 06:22:07,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:07,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:07,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-09 06:22:07,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:07,697 INFO L124 PetriNetUnfolderBase]: 1181/2230 cut-off events. [2025-03-09 06:22:07,697 INFO L125 PetriNetUnfolderBase]: For 710/710 co-relation queries the response was YES. [2025-03-09 06:22:07,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4651 conditions, 2230 events. 1181/2230 cut-off events. For 710/710 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 14007 event pairs, 558 based on Foata normal form. 104/2089 useless extension candidates. Maximal degree in co-relation 4638. Up to 1241 conditions per place. [2025-03-09 06:22:07,714 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 56 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2025-03-09 06:22:07,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 66 transitions, 322 flow [2025-03-09 06:22:07,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:22:07,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:22:07,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2025-03-09 06:22:07,716 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7109375 [2025-03-09 06:22:07,717 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 100 flow. Second operand 4 states and 91 transitions. [2025-03-09 06:22:07,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 66 transitions, 322 flow [2025-03-09 06:22:07,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 66 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:22:07,719 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 120 flow [2025-03-09 06:22:07,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2025-03-09 06:22:07,720 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2025-03-09 06:22:07,720 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 120 flow [2025-03-09 06:22:07,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:07,720 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:07,720 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:07,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 06:22:07,721 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:07,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:07,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1984850697, now seen corresponding path program 1 times [2025-03-09 06:22:07,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:07,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637233883] [2025-03-09 06:22:07,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:07,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:07,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:22:07,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:22:07,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:07,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:07,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:07,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:07,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637233883] [2025-03-09 06:22:07,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637233883] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:07,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:07,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:22:07,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835296350] [2025-03-09 06:22:07,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:07,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:22:07,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:07,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:22:07,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:22:07,755 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:07,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:07,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:07,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:07,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:07,929 INFO L124 PetriNetUnfolderBase]: 791/1734 cut-off events. [2025-03-09 06:22:07,930 INFO L125 PetriNetUnfolderBase]: For 752/768 co-relation queries the response was YES. [2025-03-09 06:22:07,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3921 conditions, 1734 events. 791/1734 cut-off events. For 752/768 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 11553 event pairs, 279 based on Foata normal form. 6/1619 useless extension candidates. Maximal degree in co-relation 3906. Up to 791 conditions per place. [2025-03-09 06:22:07,943 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 41 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2025-03-09 06:22:07,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 279 flow [2025-03-09 06:22:07,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:22:07,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:22:07,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2025-03-09 06:22:07,944 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7604166666666666 [2025-03-09 06:22:07,944 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 120 flow. Second operand 3 states and 73 transitions. [2025-03-09 06:22:07,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 279 flow [2025-03-09 06:22:07,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:22:07,947 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 140 flow [2025-03-09 06:22:07,947 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2025-03-09 06:22:07,948 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2025-03-09 06:22:07,948 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 140 flow [2025-03-09 06:22:07,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:07,948 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:07,948 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:07,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:22:07,948 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:07,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:07,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1984850698, now seen corresponding path program 1 times [2025-03-09 06:22:07,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:07,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044807446] [2025-03-09 06:22:07,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:07,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:07,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:22:07,957 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:22:07,957 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:07,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:07,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:07,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:07,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044807446] [2025-03-09 06:22:07,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044807446] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:07,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:07,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:22:07,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870065784] [2025-03-09 06:22:07,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:07,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:22:07,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:07,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:22:07,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:22:07,979 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:07,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:07,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:07,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:07,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:08,163 INFO L124 PetriNetUnfolderBase]: 753/1716 cut-off events. [2025-03-09 06:22:08,164 INFO L125 PetriNetUnfolderBase]: For 1013/1029 co-relation queries the response was YES. [2025-03-09 06:22:08,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4132 conditions, 1716 events. 753/1716 cut-off events. For 1013/1029 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 11602 event pairs, 217 based on Foata normal form. 42/1701 useless extension candidates. Maximal degree in co-relation 4114. Up to 835 conditions per place. [2025-03-09 06:22:08,174 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 41 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2025-03-09 06:22:08,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 302 flow [2025-03-09 06:22:08,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:22:08,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:22:08,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2025-03-09 06:22:08,177 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.75 [2025-03-09 06:22:08,178 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 140 flow. Second operand 3 states and 72 transitions. [2025-03-09 06:22:08,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 56 transitions, 302 flow [2025-03-09 06:22:08,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 56 transitions, 294 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:22:08,182 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 154 flow [2025-03-09 06:22:08,183 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2025-03-09 06:22:08,183 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2025-03-09 06:22:08,183 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 154 flow [2025-03-09 06:22:08,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:08,183 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:08,183 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:08,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:22:08,183 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:08,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:08,184 INFO L85 PathProgramCache]: Analyzing trace with hash 476048493, now seen corresponding path program 1 times [2025-03-09 06:22:08,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:08,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424591953] [2025-03-09 06:22:08,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:08,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:08,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:22:08,194 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:22:08,194 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:08,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:08,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:08,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:08,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424591953] [2025-03-09 06:22:08,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424591953] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:08,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:08,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:22:08,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836388207] [2025-03-09 06:22:08,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:08,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:22:08,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:08,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:22:08,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:22:08,244 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-09 06:22:08,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:08,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:08,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-09 06:22:08,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:08,445 INFO L124 PetriNetUnfolderBase]: 1197/2294 cut-off events. [2025-03-09 06:22:08,445 INFO L125 PetriNetUnfolderBase]: For 1748/1947 co-relation queries the response was YES. [2025-03-09 06:22:08,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5719 conditions, 2294 events. 1197/2294 cut-off events. For 1748/1947 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14882 event pairs, 700 based on Foata normal form. 147/2346 useless extension candidates. Maximal degree in co-relation 5700. Up to 1481 conditions per place. [2025-03-09 06:22:08,459 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 57 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2025-03-09 06:22:08,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 396 flow [2025-03-09 06:22:08,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:22:08,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:22:08,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2025-03-09 06:22:08,461 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6796875 [2025-03-09 06:22:08,462 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 154 flow. Second operand 4 states and 87 transitions. [2025-03-09 06:22:08,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 396 flow [2025-03-09 06:22:08,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 68 transitions, 388 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:22:08,467 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 174 flow [2025-03-09 06:22:08,467 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2025-03-09 06:22:08,467 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 15 predicate places. [2025-03-09 06:22:08,467 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 174 flow [2025-03-09 06:22:08,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:08,468 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:08,468 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:08,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 06:22:08,468 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:08,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:08,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1652667496, now seen corresponding path program 1 times [2025-03-09 06:22:08,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:08,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267778426] [2025-03-09 06:22:08,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:08,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:08,476 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:22:08,478 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:22:08,478 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:08,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:08,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:08,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:08,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267778426] [2025-03-09 06:22:08,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267778426] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:08,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:08,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:22:08,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675175139] [2025-03-09 06:22:08,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:08,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:22:08,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:08,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:22:08,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:22:08,521 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:08,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:08,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:08,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:08,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:08,746 INFO L124 PetriNetUnfolderBase]: 1021/2270 cut-off events. [2025-03-09 06:22:08,746 INFO L125 PetriNetUnfolderBase]: For 1871/2056 co-relation queries the response was YES. [2025-03-09 06:22:08,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6024 conditions, 2270 events. 1021/2270 cut-off events. For 1871/2056 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 16343 event pairs, 193 based on Foata normal form. 120/2344 useless extension candidates. Maximal degree in co-relation 6003. Up to 674 conditions per place. [2025-03-09 06:22:08,760 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 58 selfloop transitions, 11 changer transitions 0/81 dead transitions. [2025-03-09 06:22:08,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 81 transitions, 477 flow [2025-03-09 06:22:08,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:22:08,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:22:08,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2025-03-09 06:22:08,761 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.725 [2025-03-09 06:22:08,761 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 174 flow. Second operand 5 states and 116 transitions. [2025-03-09 06:22:08,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 81 transitions, 477 flow [2025-03-09 06:22:08,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:22:08,766 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 272 flow [2025-03-09 06:22:08,766 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2025-03-09 06:22:08,767 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2025-03-09 06:22:08,767 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 272 flow [2025-03-09 06:22:08,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:08,767 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:08,767 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:08,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:22:08,768 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:08,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:08,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1652667497, now seen corresponding path program 1 times [2025-03-09 06:22:08,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:08,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302038138] [2025-03-09 06:22:08,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:08,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:08,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:22:08,778 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:22:08,778 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:08,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:08,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:08,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302038138] [2025-03-09 06:22:08,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302038138] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:08,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:08,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:22:08,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217713594] [2025-03-09 06:22:08,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:08,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:22:08,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:08,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:22:08,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:22:08,809 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:08,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:08,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:08,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:08,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:09,073 INFO L124 PetriNetUnfolderBase]: 1098/2481 cut-off events. [2025-03-09 06:22:09,073 INFO L125 PetriNetUnfolderBase]: For 4261/4434 co-relation queries the response was YES. [2025-03-09 06:22:09,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6971 conditions, 2481 events. 1098/2481 cut-off events. For 4261/4434 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 17971 event pairs, 268 based on Foata normal form. 183/2571 useless extension candidates. Maximal degree in co-relation 6945. Up to 809 conditions per place. [2025-03-09 06:22:09,089 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 63 selfloop transitions, 9 changer transitions 0/84 dead transitions. [2025-03-09 06:22:09,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 84 transitions, 564 flow [2025-03-09 06:22:09,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:22:09,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:22:09,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2025-03-09 06:22:09,092 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.73125 [2025-03-09 06:22:09,092 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 272 flow. Second operand 5 states and 117 transitions. [2025-03-09 06:22:09,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 84 transitions, 564 flow [2025-03-09 06:22:09,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 84 transitions, 541 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-03-09 06:22:09,099 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 327 flow [2025-03-09 06:22:09,099 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=327, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2025-03-09 06:22:09,101 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 26 predicate places. [2025-03-09 06:22:09,101 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 327 flow [2025-03-09 06:22:09,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:09,101 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:09,101 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:09,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 06:22:09,102 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:09,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:09,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1017608297, now seen corresponding path program 1 times [2025-03-09 06:22:09,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:09,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905126789] [2025-03-09 06:22:09,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:09,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:09,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:22:09,109 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:22:09,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:09,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:09,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:09,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:09,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905126789] [2025-03-09 06:22:09,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905126789] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:09,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:09,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:22:09,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64307721] [2025-03-09 06:22:09,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:09,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:22:09,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:09,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:22:09,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:22:09,142 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:09,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 327 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:09,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:09,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:09,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:09,264 INFO L124 PetriNetUnfolderBase]: 903/1917 cut-off events. [2025-03-09 06:22:09,264 INFO L125 PetriNetUnfolderBase]: For 3740/3971 co-relation queries the response was YES. [2025-03-09 06:22:09,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5573 conditions, 1917 events. 903/1917 cut-off events. For 3740/3971 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12677 event pairs, 696 based on Foata normal form. 161/1993 useless extension candidates. Maximal degree in co-relation 5545. Up to 1466 conditions per place. [2025-03-09 06:22:09,277 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 32 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2025-03-09 06:22:09,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 45 transitions, 330 flow [2025-03-09 06:22:09,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:22:09,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:22:09,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2025-03-09 06:22:09,278 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-03-09 06:22:09,278 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 327 flow. Second operand 3 states and 56 transitions. [2025-03-09 06:22:09,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 45 transitions, 330 flow [2025-03-09 06:22:09,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 45 transitions, 314 flow, removed 5 selfloop flow, removed 2 redundant places. [2025-03-09 06:22:09,286 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 250 flow [2025-03-09 06:22:09,286 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2025-03-09 06:22:09,287 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 23 predicate places. [2025-03-09 06:22:09,287 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 250 flow [2025-03-09 06:22:09,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:09,287 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:09,287 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:09,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 06:22:09,287 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:09,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:09,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1017608296, now seen corresponding path program 1 times [2025-03-09 06:22:09,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:09,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112422984] [2025-03-09 06:22:09,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:09,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:09,292 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:22:09,294 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:22:09,294 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:09,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:09,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:09,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:09,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112422984] [2025-03-09 06:22:09,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112422984] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:09,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:09,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:22:09,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210377251] [2025-03-09 06:22:09,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:09,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:22:09,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:09,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:22:09,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:22:09,324 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:09,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 250 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:09,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:09,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:09,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:09,506 INFO L124 PetriNetUnfolderBase]: 1002/2330 cut-off events. [2025-03-09 06:22:09,507 INFO L125 PetriNetUnfolderBase]: For 2596/2781 co-relation queries the response was YES. [2025-03-09 06:22:09,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6223 conditions, 2330 events. 1002/2330 cut-off events. For 2596/2781 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 16530 event pairs, 199 based on Foata normal form. 110/2367 useless extension candidates. Maximal degree in co-relation 6199. Up to 1168 conditions per place. [2025-03-09 06:22:09,515 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 58 selfloop transitions, 5 changer transitions 0/75 dead transitions. [2025-03-09 06:22:09,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 75 transitions, 480 flow [2025-03-09 06:22:09,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:22:09,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:22:09,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2025-03-09 06:22:09,516 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.68125 [2025-03-09 06:22:09,516 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 250 flow. Second operand 5 states and 109 transitions. [2025-03-09 06:22:09,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 75 transitions, 480 flow [2025-03-09 06:22:09,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 475 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-03-09 06:22:09,519 INFO L231 Difference]: Finished difference. Result has 63 places, 46 transitions, 271 flow [2025-03-09 06:22:09,519 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=271, PETRI_PLACES=63, PETRI_TRANSITIONS=46} [2025-03-09 06:22:09,520 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2025-03-09 06:22:09,520 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 46 transitions, 271 flow [2025-03-09 06:22:09,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:09,520 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:09,520 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:09,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-09 06:22:09,520 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:09,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:09,521 INFO L85 PathProgramCache]: Analyzing trace with hash -2101859406, now seen corresponding path program 1 times [2025-03-09 06:22:09,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:09,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418585723] [2025-03-09 06:22:09,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:09,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:09,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:22:09,528 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:22:09,529 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:09,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:09,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:09,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:09,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418585723] [2025-03-09 06:22:09,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418585723] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:22:09,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434751220] [2025-03-09 06:22:09,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:09,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:09,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:22:09,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:22:09,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 06:22:09,615 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:22:09,623 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:22:09,623 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:09,623 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:09,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:22:09,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:22:09,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:09,674 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:22:09,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434751220] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:09,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:22:09,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-03-09 06:22:09,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608978650] [2025-03-09 06:22:09,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:09,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:22:09,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:09,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:22:09,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-09 06:22:09,681 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-03-09 06:22:09,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 46 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:09,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:09,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-03-09 06:22:09,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:09,899 INFO L124 PetriNetUnfolderBase]: 1858/3390 cut-off events. [2025-03-09 06:22:09,900 INFO L125 PetriNetUnfolderBase]: For 4438/4674 co-relation queries the response was YES. [2025-03-09 06:22:09,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9796 conditions, 3390 events. 1858/3390 cut-off events. For 4438/4674 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 21685 event pairs, 259 based on Foata normal form. 202/3404 useless extension candidates. Maximal degree in co-relation 9769. Up to 1361 conditions per place. [2025-03-09 06:22:09,915 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 63 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2025-03-09 06:22:09,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 566 flow [2025-03-09 06:22:09,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:22:09,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:22:09,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2025-03-09 06:22:09,916 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59375 [2025-03-09 06:22:09,916 INFO L175 Difference]: Start difference. First operand has 63 places, 46 transitions, 271 flow. Second operand 4 states and 76 transitions. [2025-03-09 06:22:09,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 566 flow [2025-03-09 06:22:09,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 76 transitions, 552 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-09 06:22:09,924 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 271 flow [2025-03-09 06:22:09,924 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2025-03-09 06:22:09,924 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2025-03-09 06:22:09,924 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 271 flow [2025-03-09 06:22:09,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:09,925 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:09,925 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-09 06:22:09,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 06:22:10,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-09 06:22:10,126 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:10,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:10,126 INFO L85 PathProgramCache]: Analyzing trace with hash -733131992, now seen corresponding path program 1 times [2025-03-09 06:22:10,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:10,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253325208] [2025-03-09 06:22:10,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:10,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:10,130 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:22:10,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:22:10,133 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:10,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:10,157 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:22:10,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:10,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253325208] [2025-03-09 06:22:10,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253325208] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:10,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:10,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:22:10,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929330441] [2025-03-09 06:22:10,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:10,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:22:10,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:10,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:22:10,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:22:10,162 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-03-09 06:22:10,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:10,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:10,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-03-09 06:22:10,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:10,379 INFO L124 PetriNetUnfolderBase]: 1583/3216 cut-off events. [2025-03-09 06:22:10,379 INFO L125 PetriNetUnfolderBase]: For 4752/4869 co-relation queries the response was YES. [2025-03-09 06:22:10,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9374 conditions, 3216 events. 1583/3216 cut-off events. For 4752/4869 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 21736 event pairs, 358 based on Foata normal form. 178/3347 useless extension candidates. Maximal degree in co-relation 9348. Up to 1262 conditions per place. [2025-03-09 06:22:10,392 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 63 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2025-03-09 06:22:10,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 562 flow [2025-03-09 06:22:10,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:22:10,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:22:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2025-03-09 06:22:10,394 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59375 [2025-03-09 06:22:10,394 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 271 flow. Second operand 4 states and 76 transitions. [2025-03-09 06:22:10,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 562 flow [2025-03-09 06:22:10,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 76 transitions, 550 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:22:10,403 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 275 flow [2025-03-09 06:22:10,403 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2025-03-09 06:22:10,404 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2025-03-09 06:22:10,404 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 275 flow [2025-03-09 06:22:10,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:10,404 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:10,404 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:10,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-09 06:22:10,404 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:10,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:10,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1110404095, now seen corresponding path program 1 times [2025-03-09 06:22:10,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:10,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454317037] [2025-03-09 06:22:10,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:10,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:10,408 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:22:10,411 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:22:10,411 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:10,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:10,445 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:10,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:10,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454317037] [2025-03-09 06:22:10,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454317037] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:22:10,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530218942] [2025-03-09 06:22:10,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:10,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:10,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:22:10,448 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:22:10,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 06:22:10,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:22:10,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:22:10,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:10,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:10,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:22:10,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:22:10,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:10,518 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:22:10,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530218942] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:10,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:22:10,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-09 06:22:10,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263296010] [2025-03-09 06:22:10,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:10,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:22:10,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:10,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:22:10,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:22:10,531 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-09 06:22:10,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 275 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:10,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:10,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-09 06:22:10,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:10,798 INFO L124 PetriNetUnfolderBase]: 1521/2931 cut-off events. [2025-03-09 06:22:10,799 INFO L125 PetriNetUnfolderBase]: For 5613/5705 co-relation queries the response was YES. [2025-03-09 06:22:10,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8772 conditions, 2931 events. 1521/2931 cut-off events. For 5613/5705 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 19053 event pairs, 142 based on Foata normal form. 207/3017 useless extension candidates. Maximal degree in co-relation 8746. Up to 984 conditions per place. [2025-03-09 06:22:10,809 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 81 selfloop transitions, 6 changer transitions 1/95 dead transitions. [2025-03-09 06:22:10,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 95 transitions, 726 flow [2025-03-09 06:22:10,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:22:10,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:22:10,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2025-03-09 06:22:10,810 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59375 [2025-03-09 06:22:10,810 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 275 flow. Second operand 6 states and 114 transitions. [2025-03-09 06:22:10,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 95 transitions, 726 flow [2025-03-09 06:22:10,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 95 transitions, 706 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:22:10,815 INFO L231 Difference]: Finished difference. Result has 65 places, 44 transitions, 275 flow [2025-03-09 06:22:10,816 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=65, PETRI_TRANSITIONS=44} [2025-03-09 06:22:10,816 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 30 predicate places. [2025-03-09 06:22:10,816 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 44 transitions, 275 flow [2025-03-09 06:22:10,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:10,816 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:10,817 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:10,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 06:22:11,017 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,SelfDestructingSolverStorable12 [2025-03-09 06:22:11,018 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:11,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:11,019 INFO L85 PathProgramCache]: Analyzing trace with hash 832893443, now seen corresponding path program 1 times [2025-03-09 06:22:11,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:11,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716077573] [2025-03-09 06:22:11,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:11,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:11,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:22:11,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:22:11,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:11,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:11,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:11,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:11,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716077573] [2025-03-09 06:22:11,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716077573] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:22:11,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971513265] [2025-03-09 06:22:11,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:11,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:11,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:22:11,059 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:22:11,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 06:22:11,093 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:22:11,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:22:11,102 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:11,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:11,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:22:11,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:22:11,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:11,123 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:22:11,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:11,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971513265] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:22:11,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:22:11,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-03-09 06:22:11,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681007599] [2025-03-09 06:22:11,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:22:11,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 06:22:11,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:11,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 06:22:11,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:22:11,160 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:11,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 44 transitions, 275 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:11,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:11,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:11,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:11,378 INFO L124 PetriNetUnfolderBase]: 1339/2904 cut-off events. [2025-03-09 06:22:11,378 INFO L125 PetriNetUnfolderBase]: For 6270/6352 co-relation queries the response was YES. [2025-03-09 06:22:11,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8846 conditions, 2904 events. 1339/2904 cut-off events. For 6270/6352 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 18824 event pairs, 119 based on Foata normal form. 227/3108 useless extension candidates. Maximal degree in co-relation 8819. Up to 507 conditions per place. [2025-03-09 06:22:11,391 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 73 selfloop transitions, 12 changer transitions 4/99 dead transitions. [2025-03-09 06:22:11,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 99 transitions, 703 flow [2025-03-09 06:22:11,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 06:22:11,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 06:22:11,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2025-03-09 06:22:11,392 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7053571428571429 [2025-03-09 06:22:11,392 INFO L175 Difference]: Start difference. First operand has 65 places, 44 transitions, 275 flow. Second operand 7 states and 158 transitions. [2025-03-09 06:22:11,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 99 transitions, 703 flow [2025-03-09 06:22:11,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 99 transitions, 676 flow, removed 7 selfloop flow, removed 4 redundant places. [2025-03-09 06:22:11,400 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 379 flow [2025-03-09 06:22:11,400 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=379, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2025-03-09 06:22:11,400 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2025-03-09 06:22:11,400 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 379 flow [2025-03-09 06:22:11,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:11,401 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:11,401 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:11,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 06:22:11,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:11,605 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:11,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:11,605 INFO L85 PathProgramCache]: Analyzing trace with hash 62788742, now seen corresponding path program 1 times [2025-03-09 06:22:11,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:11,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587855604] [2025-03-09 06:22:11,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:11,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:11,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:22:11,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:22:11,610 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:11,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:11,628 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:22:11,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:11,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587855604] [2025-03-09 06:22:11,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587855604] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:11,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:22:11,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:22:11,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098945598] [2025-03-09 06:22:11,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:11,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:22:11,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:11,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:22:11,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:22:11,633 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-03-09 06:22:11,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 379 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:11,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:11,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-03-09 06:22:11,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:11,891 INFO L124 PetriNetUnfolderBase]: 2138/3893 cut-off events. [2025-03-09 06:22:11,892 INFO L125 PetriNetUnfolderBase]: For 10005/10082 co-relation queries the response was YES. [2025-03-09 06:22:11,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12733 conditions, 3893 events. 2138/3893 cut-off events. For 10005/10082 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 22890 event pairs, 503 based on Foata normal form. 257/4109 useless extension candidates. Maximal degree in co-relation 12701. Up to 1567 conditions per place. [2025-03-09 06:22:11,909 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 69 selfloop transitions, 6 changer transitions 0/81 dead transitions. [2025-03-09 06:22:11,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 81 transitions, 764 flow [2025-03-09 06:22:11,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:22:11,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:22:11,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2025-03-09 06:22:11,910 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-03-09 06:22:11,910 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 379 flow. Second operand 4 states and 72 transitions. [2025-03-09 06:22:11,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 81 transitions, 764 flow [2025-03-09 06:22:11,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 81 transitions, 729 flow, removed 11 selfloop flow, removed 3 redundant places. [2025-03-09 06:22:11,921 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 372 flow [2025-03-09 06:22:11,921 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=372, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2025-03-09 06:22:11,922 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2025-03-09 06:22:11,922 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 372 flow [2025-03-09 06:22:11,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:11,922 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:11,922 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:11,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-09 06:22:11,922 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:11,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:11,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1967023659, now seen corresponding path program 1 times [2025-03-09 06:22:11,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:11,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828124526] [2025-03-09 06:22:11,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:11,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:11,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-09 06:22:11,930 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-09 06:22:11,930 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:11,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:11,987 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:11,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:11,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828124526] [2025-03-09 06:22:11,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828124526] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:22:11,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302582808] [2025-03-09 06:22:11,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:11,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:11,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:22:11,990 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:22:11,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 06:22:12,026 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-09 06:22:12,037 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-09 06:22:12,037 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:12,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:12,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:22:12,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:22:12,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:12,073 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:22:12,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:12,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302582808] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:22:12,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:22:12,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-03-09 06:22:12,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032759088] [2025-03-09 06:22:12,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:22:12,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:22:12,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:12,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:22:12,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:22:12,132 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:12,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 372 flow. Second operand has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:12,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:12,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:12,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:12,496 INFO L124 PetriNetUnfolderBase]: 1744/3743 cut-off events. [2025-03-09 06:22:12,497 INFO L125 PetriNetUnfolderBase]: For 12928/12958 co-relation queries the response was YES. [2025-03-09 06:22:12,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11877 conditions, 3743 events. 1744/3743 cut-off events. For 12928/12958 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 23155 event pairs, 59 based on Foata normal form. 200/3940 useless extension candidates. Maximal degree in co-relation 11846. Up to 457 conditions per place. [2025-03-09 06:22:12,512 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 100 selfloop transitions, 17 changer transitions 17/144 dead transitions. [2025-03-09 06:22:12,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 144 transitions, 1032 flow [2025-03-09 06:22:12,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 06:22:12,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 06:22:12,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 268 transitions. [2025-03-09 06:22:12,515 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2025-03-09 06:22:12,516 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 372 flow. Second operand 12 states and 268 transitions. [2025-03-09 06:22:12,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 144 transitions, 1032 flow [2025-03-09 06:22:12,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 144 transitions, 995 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-03-09 06:22:12,526 INFO L231 Difference]: Finished difference. Result has 87 places, 52 transitions, 429 flow [2025-03-09 06:22:12,526 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=429, PETRI_PLACES=87, PETRI_TRANSITIONS=52} [2025-03-09 06:22:12,527 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 52 predicate places. [2025-03-09 06:22:12,527 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 52 transitions, 429 flow [2025-03-09 06:22:12,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:12,527 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:12,528 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:12,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 06:22:12,732 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,SelfDestructingSolverStorable15 [2025-03-09 06:22:12,732 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:12,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:12,732 INFO L85 PathProgramCache]: Analyzing trace with hash -58641131, now seen corresponding path program 1 times [2025-03-09 06:22:12,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:12,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230406045] [2025-03-09 06:22:12,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:12,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:12,737 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-09 06:22:12,741 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-09 06:22:12,741 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:12,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:12,806 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:12,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:12,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230406045] [2025-03-09 06:22:12,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230406045] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:22:12,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786607001] [2025-03-09 06:22:12,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:22:12,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:12,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:22:12,809 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:22:12,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 06:22:12,839 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-09 06:22:12,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-09 06:22:12,852 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:22:12,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:12,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 06:22:12,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:22:12,892 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:12,893 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:22:12,980 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:12,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786607001] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:22:12,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:22:12,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2025-03-09 06:22:12,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830247465] [2025-03-09 06:22:12,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:22:12,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-09 06:22:12,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:12,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-09 06:22:12,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2025-03-09 06:22:12,982 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2025-03-09 06:22:12,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 52 transitions, 429 flow. Second operand has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:12,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:12,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2025-03-09 06:22:12,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:13,560 INFO L124 PetriNetUnfolderBase]: 2554/5409 cut-off events. [2025-03-09 06:22:13,560 INFO L125 PetriNetUnfolderBase]: For 19397/19439 co-relation queries the response was YES. [2025-03-09 06:22:13,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17144 conditions, 5409 events. 2554/5409 cut-off events. For 19397/19439 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 33758 event pairs, 119 based on Foata normal form. 192/5588 useless extension candidates. Maximal degree in co-relation 17105. Up to 647 conditions per place. [2025-03-09 06:22:13,583 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 120 selfloop transitions, 24 changer transitions 25/179 dead transitions. [2025-03-09 06:22:13,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 179 transitions, 1332 flow [2025-03-09 06:22:13,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-09 06:22:13,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-09 06:22:13,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 334 transitions. [2025-03-09 06:22:13,585 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6958333333333333 [2025-03-09 06:22:13,585 INFO L175 Difference]: Start difference. First operand has 87 places, 52 transitions, 429 flow. Second operand 15 states and 334 transitions. [2025-03-09 06:22:13,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 179 transitions, 1332 flow [2025-03-09 06:22:13,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 179 transitions, 1319 flow, removed 3 selfloop flow, removed 3 redundant places. [2025-03-09 06:22:13,602 INFO L231 Difference]: Finished difference. Result has 105 places, 60 transitions, 580 flow [2025-03-09 06:22:13,602 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=580, PETRI_PLACES=105, PETRI_TRANSITIONS=60} [2025-03-09 06:22:13,602 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 70 predicate places. [2025-03-09 06:22:13,602 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 60 transitions, 580 flow [2025-03-09 06:22:13,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:13,603 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:22:13,603 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:13,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-09 06:22:13,807 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,SelfDestructingSolverStorable16 [2025-03-09 06:22:13,807 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2025-03-09 06:22:13,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:22:13,807 INFO L85 PathProgramCache]: Analyzing trace with hash -233061099, now seen corresponding path program 2 times [2025-03-09 06:22:13,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:22:13,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884693617] [2025-03-09 06:22:13,808 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:22:13,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:22:13,814 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 65 statements into 2 equivalence classes. [2025-03-09 06:22:13,823 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 65 of 65 statements. [2025-03-09 06:22:13,825 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:22:13,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:14,028 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:22:14,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:22:14,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884693617] [2025-03-09 06:22:14,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884693617] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:22:14,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475576915] [2025-03-09 06:22:14,028 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:22:14,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:22:14,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:22:14,031 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:22:14,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 06:22:14,067 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 65 statements into 2 equivalence classes. [2025-03-09 06:22:14,086 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 65 of 65 statements. [2025-03-09 06:22:14,087 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:22:14,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:22:14,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-09 06:22:14,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:22:14,244 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-09 06:22:14,244 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:22:14,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475576915] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:22:14,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:22:14,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 26 [2025-03-09 06:22:14,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537005575] [2025-03-09 06:22:14,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:22:14,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-09 06:22:14,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:22:14,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-09 06:22:14,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2025-03-09 06:22:14,260 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2025-03-09 06:22:14,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 60 transitions, 580 flow. Second operand has 13 states, 13 states have (on average 11.307692307692308) internal successors, (147), 13 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:14,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:22:14,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2025-03-09 06:22:14,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:22:15,341 INFO L124 PetriNetUnfolderBase]: 7304/12824 cut-off events. [2025-03-09 06:22:15,341 INFO L125 PetriNetUnfolderBase]: For 30582/30824 co-relation queries the response was YES. [2025-03-09 06:22:15,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41542 conditions, 12824 events. 7304/12824 cut-off events. For 30582/30824 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 87461 event pairs, 293 based on Foata normal form. 552/13370 useless extension candidates. Maximal degree in co-relation 41505. Up to 2208 conditions per place. [2025-03-09 06:22:15,459 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 0 selfloop transitions, 0 changer transitions 243/243 dead transitions. [2025-03-09 06:22:15,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 243 transitions, 2451 flow [2025-03-09 06:22:15,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-09 06:22:15,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-09 06:22:15,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 231 transitions. [2025-03-09 06:22:15,460 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5552884615384616 [2025-03-09 06:22:15,460 INFO L175 Difference]: Start difference. First operand has 105 places, 60 transitions, 580 flow. Second operand 13 states and 231 transitions. [2025-03-09 06:22:15,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 243 transitions, 2451 flow [2025-03-09 06:22:15,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 243 transitions, 1925 flow, removed 4 selfloop flow, removed 30 redundant places. [2025-03-09 06:22:15,487 INFO L231 Difference]: Finished difference. Result has 82 places, 0 transitions, 0 flow [2025-03-09 06:22:15,487 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=82, PETRI_TRANSITIONS=0} [2025-03-09 06:22:15,487 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 47 predicate places. [2025-03-09 06:22:15,487 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 0 transitions, 0 flow [2025-03-09 06:22:15,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.307692307692308) internal successors, (147), 13 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:22:15,489 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2025-03-09 06:22:15,489 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2025-03-09 06:22:15,489 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2025-03-09 06:22:15,490 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2025-03-09 06:22:15,490 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2025-03-09 06:22:15,490 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2025-03-09 06:22:15,490 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2025-03-09 06:22:15,490 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2025-03-09 06:22:15,490 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2025-03-09 06:22:15,490 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2025-03-09 06:22:15,490 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2025-03-09 06:22:15,490 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2025-03-09 06:22:15,490 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2025-03-09 06:22:15,490 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2025-03-09 06:22:15,490 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2025-03-09 06:22:15,490 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2025-03-09 06:22:15,490 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2025-03-09 06:22:15,491 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2025-03-09 06:22:15,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-09 06:22:15,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-09 06:22:15,691 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:22:15,695 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-09 06:22:15,695 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-09 06:22:15,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.03 06:22:15 BasicIcfg [2025-03-09 06:22:15,698 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-09 06:22:15,698 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-09 06:22:15,698 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-09 06:22:15,698 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-09 06:22:15,699 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:22:06" (3/4) ... [2025-03-09 06:22:15,700 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-09 06:22:15,702 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t1 [2025-03-09 06:22:15,702 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t2 [2025-03-09 06:22:15,704 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2025-03-09 06:22:15,704 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-03-09 06:22:15,704 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-03-09 06:22:15,704 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-09 06:22:15,704 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-09 06:22:15,748 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-09 06:22:15,748 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-09 06:22:15,748 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-09 06:22:15,749 INFO L158 Benchmark]: Toolchain (without parser) took 9889.89ms. Allocated memory was 142.6MB in the beginning and 444.6MB in the end (delta: 302.0MB). Free memory was 103.0MB in the beginning and 278.2MB in the end (delta: -175.2MB). Peak memory consumption was 125.1MB. Max. memory is 16.1GB. [2025-03-09 06:22:15,749 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 201.3MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:22:15,750 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.29ms. Allocated memory is still 142.6MB. Free memory was 103.0MB in the beginning and 84.5MB in the end (delta: 18.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 06:22:15,750 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.17ms. Allocated memory is still 142.6MB. Free memory was 84.5MB in the beginning and 82.6MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 06:22:15,751 INFO L158 Benchmark]: Boogie Preprocessor took 19.39ms. Allocated memory is still 142.6MB. Free memory was 82.6MB in the beginning and 81.6MB in the end (delta: 990.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:22:15,751 INFO L158 Benchmark]: IcfgBuilder took 309.72ms. Allocated memory is still 142.6MB. Free memory was 81.6MB in the beginning and 60.8MB in the end (delta: 20.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 06:22:15,752 INFO L158 Benchmark]: TraceAbstraction took 9125.06ms. Allocated memory was 142.6MB in the beginning and 444.6MB in the end (delta: 302.0MB). Free memory was 59.8MB in the beginning and 281.8MB in the end (delta: -221.9MB). Peak memory consumption was 318.1MB. Max. memory is 16.1GB. [2025-03-09 06:22:15,752 INFO L158 Benchmark]: Witness Printer took 50.19ms. Allocated memory is still 444.6MB. Free memory was 281.8MB in the beginning and 278.2MB in the end (delta: 3.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:22:15,754 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 201.3MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 352.29ms. Allocated memory is still 142.6MB. Free memory was 103.0MB in the beginning and 84.5MB in the end (delta: 18.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.17ms. Allocated memory is still 142.6MB. Free memory was 84.5MB in the beginning and 82.6MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.39ms. Allocated memory is still 142.6MB. Free memory was 82.6MB in the beginning and 81.6MB in the end (delta: 990.4kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 309.72ms. Allocated memory is still 142.6MB. Free memory was 81.6MB in the beginning and 60.8MB in the end (delta: 20.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 9125.06ms. Allocated memory was 142.6MB in the beginning and 444.6MB in the end (delta: 302.0MB). Free memory was 59.8MB in the beginning and 281.8MB in the end (delta: -221.9MB). Peak memory consumption was 318.1MB. Max. memory is 16.1GB. * Witness Printer took 50.19ms. Allocated memory is still 444.6MB. Free memory was 281.8MB in the beginning and 278.2MB in the end (delta: 3.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 55 locations, 56 edges, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.0s, OverallIterations: 18, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1207 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1178 mSDsluCounter, 53 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1959 IncrementalHoareTripleChecker+Invalid, 2003 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 20 mSDtfsCounter, 1959 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 343 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=580occurred in iteration=17, InterpolantAutomatonStates: 103, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 440 NumberOfCodeBlocks, 440 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 488 ConstructedInterpolants, 0 QuantifiedInterpolants, 1370 SizeOfPredicates, 20 NumberOfNonLiveVariables, 688 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 27 InterpolantComputations, 15 PerfectInterpolantSequences, 123/347 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-09 06:22:15,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE