./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/triangular-longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/triangular-longest-1.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 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:34:16,751 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:34:16,816 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:34:16,821 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:34:16,821 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:34:16,841 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:34:16,844 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:34:16,845 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:34:16,845 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:34:16,846 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:34:16,846 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:34:16,847 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:34:16,847 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:34:16,847 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:34:16,847 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:34:16,847 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:34:16,848 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:34:16,848 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:34:16,848 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:34:16,848 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:34:16,848 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:34:16,852 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:34:16,852 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:34:16,852 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:34:16,853 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:34:16,853 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:34:16,853 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:34:16,853 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:34:16,853 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:34:16,853 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:34:16,853 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:34:16,854 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:34:16,854 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:34:16,854 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:34:16,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:34:16,854 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:34:16,854 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:34:16,854 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:34:16,854 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:34:16,855 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:34:16,855 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:34:16,856 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:34:16,856 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:34:16,856 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:34:16,856 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 [2024-11-17 07:34:17,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:34:17,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:34:17,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:34:17,070 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:34:17,071 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:34:17,071 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longest-1.i [2024-11-17 07:34:18,235 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:34:18,405 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:34:18,408 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i [2024-11-17 07:34:18,423 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f84bda44d/e86f79213ef7474db9b674beb4733be7/FLAG1329698d0 [2024-11-17 07:34:18,794 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f84bda44d/e86f79213ef7474db9b674beb4733be7 [2024-11-17 07:34:18,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:34:18,807 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:34:18,815 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:34:18,815 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:34:18,819 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:34:18,819 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:34:18" (1/1) ... [2024-11-17 07:34:18,820 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a25835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:18, skipping insertion in model container [2024-11-17 07:34:18,820 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:34:18" (1/1) ... [2024-11-17 07:34:18,852 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:34:19,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:34:19,112 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:34:19,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:34:19,180 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:34:19,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:19 WrapperNode [2024-11-17 07:34:19,181 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:34:19,182 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:34:19,182 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:34:19,182 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:34:19,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:19" (1/1) ... [2024-11-17 07:34:19,198 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:19" (1/1) ... [2024-11-17 07:34:19,213 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2024-11-17 07:34:19,214 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:34:19,214 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:34:19,214 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:34:19,214 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:34:19,223 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:19" (1/1) ... [2024-11-17 07:34:19,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:19" (1/1) ... [2024-11-17 07:34:19,225 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:19" (1/1) ... [2024-11-17 07:34:19,240 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-17 07:34:19,240 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:19" (1/1) ... [2024-11-17 07:34:19,243 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:19" (1/1) ... [2024-11-17 07:34:19,246 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:19" (1/1) ... [2024-11-17 07:34:19,247 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:19" (1/1) ... [2024-11-17 07:34:19,247 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:19" (1/1) ... [2024-11-17 07:34:19,252 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:19" (1/1) ... [2024-11-17 07:34:19,253 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:34:19,254 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:34:19,254 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:34:19,255 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:34:19,256 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:19" (1/1) ... [2024-11-17 07:34:19,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:34:19,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:19,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 07:34:19,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 07:34:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-17 07:34:19,331 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-17 07:34:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-17 07:34:19,331 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-17 07:34:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-17 07:34:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:34:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:34:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-17 07:34:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:34:19,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:34:19,334 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:34:19,438 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:34:19,439 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:34:19,539 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:34:19,539 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:34:19,610 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:34:19,611 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:34:19,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:34:19 BoogieIcfgContainer [2024-11-17 07:34:19,611 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:34:19,613 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:34:19,613 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:34:19,616 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:34:19,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:34:18" (1/3) ... [2024-11-17 07:34:19,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb62410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:34:19, skipping insertion in model container [2024-11-17 07:34:19,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:19" (2/3) ... [2024-11-17 07:34:19,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb62410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:34:19, skipping insertion in model container [2024-11-17 07:34:19,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:34:19" (3/3) ... [2024-11-17 07:34:19,619 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2024-11-17 07:34:19,631 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:34:19,632 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-17 07:34:19,632 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:34:19,675 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 07:34:19,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 38 transitions, 84 flow [2024-11-17 07:34:19,730 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-11-17 07:34:19,730 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:34:19,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 36 events. 4/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 90 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-11-17 07:34:19,738 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 38 transitions, 84 flow [2024-11-17 07:34:19,740 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 36 transitions, 78 flow [2024-11-17 07:34:19,749 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:34:19,754 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;@171a15e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:34:19,755 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-17 07:34:19,762 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:34:19,762 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-11-17 07:34:19,763 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:34:19,763 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:19,763 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:34:19,764 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:19,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:19,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1662760112, now seen corresponding path program 1 times [2024-11-17 07:34:19,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:19,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039299587] [2024-11-17 07:34:19,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:19,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:19,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:19,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:19,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039299587] [2024-11-17 07:34:19,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039299587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:19,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:19,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:34:19,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956345133] [2024-11-17 07:34:19,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:19,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:34:19,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:19,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:34:19,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:34:19,997 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 07:34:19,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:19,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:19,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 07:34:20,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:20,183 INFO L124 PetriNetUnfolderBase]: 510/1020 cut-off events. [2024-11-17 07:34:20,183 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-17 07:34:20,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1837 conditions, 1020 events. 510/1020 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6199 event pairs, 208 based on Foata normal form. 107/847 useless extension candidates. Maximal degree in co-relation 1827. Up to 421 conditions per place. [2024-11-17 07:34:20,191 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 31 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2024-11-17 07:34:20,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 170 flow [2024-11-17 07:34:20,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:34:20,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:34:20,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-11-17 07:34:20,199 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7631578947368421 [2024-11-17 07:34:20,200 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 78 flow. Second operand 3 states and 87 transitions. [2024-11-17 07:34:20,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 48 transitions, 170 flow [2024-11-17 07:34:20,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 48 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:34:20,204 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 94 flow [2024-11-17 07:34:20,206 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2024-11-17 07:34:20,208 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2024-11-17 07:34:20,208 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 94 flow [2024-11-17 07:34:20,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:20,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:20,208 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:34:20,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:34:20,209 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:20,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:20,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1662760113, now seen corresponding path program 1 times [2024-11-17 07:34:20,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:20,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289377840] [2024-11-17 07:34:20,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:20,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:20,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:20,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:20,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289377840] [2024-11-17 07:34:20,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289377840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:20,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:20,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:34:20,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562350751] [2024-11-17 07:34:20,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:20,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:34:20,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:20,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:34:20,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:34:20,249 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 07:34:20,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:20,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:20,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 07:34:20,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:20,337 INFO L124 PetriNetUnfolderBase]: 499/1056 cut-off events. [2024-11-17 07:34:20,337 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2024-11-17 07:34:20,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2040 conditions, 1056 events. 499/1056 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6264 event pairs, 182 based on Foata normal form. 24/915 useless extension candidates. Maximal degree in co-relation 2028. Up to 466 conditions per place. [2024-11-17 07:34:20,345 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 31 selfloop transitions, 4 changer transitions 0/49 dead transitions. [2024-11-17 07:34:20,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 49 transitions, 194 flow [2024-11-17 07:34:20,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:34:20,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:34:20,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-11-17 07:34:20,348 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7192982456140351 [2024-11-17 07:34:20,348 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 94 flow. Second operand 3 states and 82 transitions. [2024-11-17 07:34:20,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 49 transitions, 194 flow [2024-11-17 07:34:20,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 49 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:34:20,351 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 108 flow [2024-11-17 07:34:20,353 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-11-17 07:34:20,354 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2024-11-17 07:34:20,354 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 108 flow [2024-11-17 07:34:20,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:20,354 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:20,354 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:20,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 07:34:20,355 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:20,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:20,355 INFO L85 PathProgramCache]: Analyzing trace with hash -447665372, now seen corresponding path program 1 times [2024-11-17 07:34:20,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:20,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702485772] [2024-11-17 07:34:20,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:20,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:20,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:20,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:20,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702485772] [2024-11-17 07:34:20,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702485772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:20,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:20,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:34:20,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221503898] [2024-11-17 07:34:20,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:20,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:34:20,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:20,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:34:20,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:34:20,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 07:34:20,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:20,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:20,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 07:34:20,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:20,579 INFO L124 PetriNetUnfolderBase]: 743/1706 cut-off events. [2024-11-17 07:34:20,580 INFO L125 PetriNetUnfolderBase]: For 551/551 co-relation queries the response was YES. [2024-11-17 07:34:20,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3308 conditions, 1706 events. 743/1706 cut-off events. For 551/551 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 11676 event pairs, 298 based on Foata normal form. 0/1464 useless extension candidates. Maximal degree in co-relation 3295. Up to 647 conditions per place. [2024-11-17 07:34:20,589 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 39 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2024-11-17 07:34:20,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 257 flow [2024-11-17 07:34:20,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:34:20,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:34:20,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-17 07:34:20,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7456140350877193 [2024-11-17 07:34:20,592 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 108 flow. Second operand 3 states and 85 transitions. [2024-11-17 07:34:20,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 257 flow [2024-11-17 07:34:20,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 56 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:34:20,594 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 126 flow [2024-11-17 07:34:20,594 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-11-17 07:34:20,595 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2024-11-17 07:34:20,595 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 126 flow [2024-11-17 07:34:20,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:20,595 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:20,596 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:20,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:34:20,597 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:20,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:20,598 INFO L85 PathProgramCache]: Analyzing trace with hash -447665371, now seen corresponding path program 1 times [2024-11-17 07:34:20,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:20,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869471886] [2024-11-17 07:34:20,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:20,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:20,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:20,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:20,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869471886] [2024-11-17 07:34:20,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869471886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:20,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:20,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:34:20,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677183287] [2024-11-17 07:34:20,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:20,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:34:20,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:20,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:34:20,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:34:20,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 07:34:20,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:20,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:20,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 07:34:20,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:20,769 INFO L124 PetriNetUnfolderBase]: 717/1780 cut-off events. [2024-11-17 07:34:20,769 INFO L125 PetriNetUnfolderBase]: For 804/804 co-relation queries the response was YES. [2024-11-17 07:34:20,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3660 conditions, 1780 events. 717/1780 cut-off events. For 804/804 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 12773 event pairs, 260 based on Foata normal form. 38/1618 useless extension candidates. Maximal degree in co-relation 3644. Up to 719 conditions per place. [2024-11-17 07:34:20,787 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 39 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-11-17 07:34:20,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 57 transitions, 276 flow [2024-11-17 07:34:20,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:34:20,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:34:20,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-11-17 07:34:20,789 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2024-11-17 07:34:20,789 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 126 flow. Second operand 3 states and 84 transitions. [2024-11-17 07:34:20,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 57 transitions, 276 flow [2024-11-17 07:34:20,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:34:20,792 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 140 flow [2024-11-17 07:34:20,792 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2024-11-17 07:34:20,792 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2024-11-17 07:34:20,793 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 140 flow [2024-11-17 07:34:20,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:20,793 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:20,793 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:20,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:34:20,793 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:20,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:20,794 INFO L85 PathProgramCache]: Analyzing trace with hash 184641588, now seen corresponding path program 1 times [2024-11-17 07:34:20,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:20,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728709971] [2024-11-17 07:34:20,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:20,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:20,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:20,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:20,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728709971] [2024-11-17 07:34:20,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728709971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:20,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:20,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:34:20,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818020635] [2024-11-17 07:34:20,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:20,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:34:20,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:20,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:34:20,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:34:20,848 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-17 07:34:20,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:20,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:20,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-17 07:34:20,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:21,033 INFO L124 PetriNetUnfolderBase]: 1277/2598 cut-off events. [2024-11-17 07:34:21,033 INFO L125 PetriNetUnfolderBase]: For 1604/1604 co-relation queries the response was YES. [2024-11-17 07:34:21,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5793 conditions, 2598 events. 1277/2598 cut-off events. For 1604/1604 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 18387 event pairs, 777 based on Foata normal form. 84/2411 useless extension candidates. Maximal degree in co-relation 5776. Up to 1637 conditions per place. [2024-11-17 07:34:21,046 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 59 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2024-11-17 07:34:21,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 72 transitions, 376 flow [2024-11-17 07:34:21,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:34:21,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:34:21,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-17 07:34:21,048 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2024-11-17 07:34:21,048 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 140 flow. Second operand 4 states and 104 transitions. [2024-11-17 07:34:21,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 72 transitions, 376 flow [2024-11-17 07:34:21,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 72 transitions, 370 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:34:21,051 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 160 flow [2024-11-17 07:34:21,052 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2024-11-17 07:34:21,054 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 11 predicate places. [2024-11-17 07:34:21,055 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 160 flow [2024-11-17 07:34:21,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:21,056 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:21,056 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:21,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:34:21,056 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:21,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:21,056 INFO L85 PathProgramCache]: Analyzing trace with hash -709684376, now seen corresponding path program 1 times [2024-11-17 07:34:21,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:21,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636224566] [2024-11-17 07:34:21,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:21,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:21,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:21,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:21,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636224566] [2024-11-17 07:34:21,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636224566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:21,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:21,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:34:21,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743401094] [2024-11-17 07:34:21,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:21,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:34:21,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:21,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:34:21,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:34:21,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-17 07:34:21,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 160 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) [2024-11-17 07:34:21,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:21,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-17 07:34:21,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:21,272 INFO L124 PetriNetUnfolderBase]: 1303/2577 cut-off events. [2024-11-17 07:34:21,272 INFO L125 PetriNetUnfolderBase]: For 1695/1915 co-relation queries the response was YES. [2024-11-17 07:34:21,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6182 conditions, 2577 events. 1303/2577 cut-off events. For 1695/1915 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 18033 event pairs, 781 based on Foata normal form. 154/2597 useless extension candidates. Maximal degree in co-relation 6163. Up to 1657 conditions per place. [2024-11-17 07:34:21,284 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 58 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2024-11-17 07:34:21,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 72 transitions, 400 flow [2024-11-17 07:34:21,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:34:21,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:34:21,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-11-17 07:34:21,286 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2024-11-17 07:34:21,286 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 160 flow. Second operand 4 states and 100 transitions. [2024-11-17 07:34:21,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 72 transitions, 400 flow [2024-11-17 07:34:21,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 72 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:34:21,291 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 182 flow [2024-11-17 07:34:21,292 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-11-17 07:34:21,292 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 15 predicate places. [2024-11-17 07:34:21,292 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 182 flow [2024-11-17 07:34:21,293 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) [2024-11-17 07:34:21,293 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:21,293 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:21,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:34:21,294 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:21,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:21,294 INFO L85 PathProgramCache]: Analyzing trace with hash 698961642, now seen corresponding path program 1 times [2024-11-17 07:34:21,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:21,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100455016] [2024-11-17 07:34:21,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:21,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:21,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:21,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:21,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:21,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100455016] [2024-11-17 07:34:21,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100455016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:21,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:21,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:34:21,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226387697] [2024-11-17 07:34:21,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:21,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:34:21,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:21,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:34:21,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:34:21,330 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 07:34:21,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:21,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:21,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 07:34:21,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:21,514 INFO L124 PetriNetUnfolderBase]: 1021/2469 cut-off events. [2024-11-17 07:34:21,514 INFO L125 PetriNetUnfolderBase]: For 1773/2024 co-relation queries the response was YES. [2024-11-17 07:34:21,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6122 conditions, 2469 events. 1021/2469 cut-off events. For 1773/2024 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 19226 event pairs, 193 based on Foata normal form. 146/2585 useless extension candidates. Maximal degree in co-relation 6101. Up to 674 conditions per place. [2024-11-17 07:34:21,525 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 58 selfloop transitions, 11 changer transitions 0/85 dead transitions. [2024-11-17 07:34:21,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 85 transitions, 475 flow [2024-11-17 07:34:21,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:34:21,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:34:21,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-11-17 07:34:21,526 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7157894736842105 [2024-11-17 07:34:21,527 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 182 flow. Second operand 5 states and 136 transitions. [2024-11-17 07:34:21,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 85 transitions, 475 flow [2024-11-17 07:34:21,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 85 transitions, 470 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:34:21,531 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 280 flow [2024-11-17 07:34:21,531 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-11-17 07:34:21,532 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 22 predicate places. [2024-11-17 07:34:21,532 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 280 flow [2024-11-17 07:34:21,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:21,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:21,533 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:21,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 07:34:21,533 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:21,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:21,534 INFO L85 PathProgramCache]: Analyzing trace with hash 698961641, now seen corresponding path program 1 times [2024-11-17 07:34:21,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:21,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512183666] [2024-11-17 07:34:21,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:21,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:21,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:21,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:21,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512183666] [2024-11-17 07:34:21,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512183666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:21,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:21,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:34:21,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627591459] [2024-11-17 07:34:21,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:21,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:34:21,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:21,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:34:21,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:34:21,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 07:34:21,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:21,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:21,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 07:34:21,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:21,776 INFO L124 PetriNetUnfolderBase]: 1098/2834 cut-off events. [2024-11-17 07:34:21,777 INFO L125 PetriNetUnfolderBase]: For 4156/4409 co-relation queries the response was YES. [2024-11-17 07:34:21,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7289 conditions, 2834 events. 1098/2834 cut-off events. For 4156/4409 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 22883 event pairs, 268 based on Foata normal form. 220/3048 useless extension candidates. Maximal degree in co-relation 7263. Up to 809 conditions per place. [2024-11-17 07:34:21,795 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 63 selfloop transitions, 9 changer transitions 0/88 dead transitions. [2024-11-17 07:34:21,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 88 transitions, 564 flow [2024-11-17 07:34:21,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:34:21,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:34:21,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-11-17 07:34:21,797 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7210526315789474 [2024-11-17 07:34:21,797 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 280 flow. Second operand 5 states and 137 transitions. [2024-11-17 07:34:21,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 88 transitions, 564 flow [2024-11-17 07:34:21,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 88 transitions, 541 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-17 07:34:21,802 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 335 flow [2024-11-17 07:34:21,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=335, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2024-11-17 07:34:21,804 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 26 predicate places. [2024-11-17 07:34:21,804 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 335 flow [2024-11-17 07:34:21,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:21,804 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:21,804 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:21,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 07:34:21,807 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:21,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:21,807 INFO L85 PathProgramCache]: Analyzing trace with hash -438157864, now seen corresponding path program 1 times [2024-11-17 07:34:21,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:21,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317925172] [2024-11-17 07:34:21,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:21,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:21,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:21,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:21,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317925172] [2024-11-17 07:34:21,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317925172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:21,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:21,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:34:21,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466200685] [2024-11-17 07:34:21,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:21,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:34:21,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:21,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:34:21,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:34:21,837 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 07:34:21,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 335 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:21,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:21,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 07:34:21,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:22,096 INFO L124 PetriNetUnfolderBase]: 1280/3296 cut-off events. [2024-11-17 07:34:22,096 INFO L125 PetriNetUnfolderBase]: For 5337/5635 co-relation queries the response was YES. [2024-11-17 07:34:22,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8779 conditions, 3296 events. 1280/3296 cut-off events. For 5337/5635 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 26974 event pairs, 242 based on Foata normal form. 170/3460 useless extension candidates. Maximal degree in co-relation 8751. Up to 1250 conditions per place. [2024-11-17 07:34:22,111 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 68 selfloop transitions, 13 changer transitions 0/97 dead transitions. [2024-11-17 07:34:22,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 97 transitions, 672 flow [2024-11-17 07:34:22,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:34:22,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:34:22,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-11-17 07:34:22,113 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2024-11-17 07:34:22,113 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 335 flow. Second operand 5 states and 140 transitions. [2024-11-17 07:34:22,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 97 transitions, 672 flow [2024-11-17 07:34:22,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 97 transitions, 668 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-17 07:34:22,120 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 443 flow [2024-11-17 07:34:22,120 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=443, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2024-11-17 07:34:22,121 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 34 predicate places. [2024-11-17 07:34:22,121 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 443 flow [2024-11-17 07:34:22,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:22,121 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:22,122 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:22,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 07:34:22,122 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:22,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:22,124 INFO L85 PathProgramCache]: Analyzing trace with hash -438157865, now seen corresponding path program 1 times [2024-11-17 07:34:22,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:22,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860988515] [2024-11-17 07:34:22,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:22,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:22,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:22,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:22,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860988515] [2024-11-17 07:34:22,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860988515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:22,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:22,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:34:22,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574325787] [2024-11-17 07:34:22,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:22,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:34:22,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:22,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:34:22,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:34:22,166 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 07:34:22,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 443 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:22,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:22,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 07:34:22,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:22,327 INFO L124 PetriNetUnfolderBase]: 1002/2433 cut-off events. [2024-11-17 07:34:22,327 INFO L125 PetriNetUnfolderBase]: For 6471/6772 co-relation queries the response was YES. [2024-11-17 07:34:22,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6649 conditions, 2433 events. 1002/2433 cut-off events. For 6471/6772 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 18464 event pairs, 770 based on Foata normal form. 230/2593 useless extension candidates. Maximal degree in co-relation 6615. Up to 1620 conditions per place. [2024-11-17 07:34:22,339 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 33 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2024-11-17 07:34:22,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 50 transitions, 372 flow [2024-11-17 07:34:22,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:34:22,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:34:22,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-11-17 07:34:22,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5964912280701754 [2024-11-17 07:34:22,340 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 443 flow. Second operand 3 states and 68 transitions. [2024-11-17 07:34:22,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 50 transitions, 372 flow [2024-11-17 07:34:22,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 50 transitions, 338 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-17 07:34:22,347 INFO L231 Difference]: Finished difference. Result has 66 places, 50 transitions, 272 flow [2024-11-17 07:34:22,347 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=66, PETRI_TRANSITIONS=50} [2024-11-17 07:34:22,348 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 27 predicate places. [2024-11-17 07:34:22,348 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 272 flow [2024-11-17 07:34:22,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:22,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:22,348 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:22,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 07:34:22,349 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:22,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:22,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1897913037, now seen corresponding path program 1 times [2024-11-17 07:34:22,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:22,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065635796] [2024-11-17 07:34:22,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:22,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:22,403 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:22,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:22,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065635796] [2024-11-17 07:34:22,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065635796] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:22,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222813429] [2024-11-17 07:34:22,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:22,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:22,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:22,406 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:34:22,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:34:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:22,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:34:22,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:22,516 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:22,517 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:34:22,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222813429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:22,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:34:22,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-17 07:34:22,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304341980] [2024-11-17 07:34:22,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:22,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:34:22,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:22,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:34:22,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-17 07:34:22,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-17 07:34:22,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 50 transitions, 272 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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) [2024-11-17 07:34:22,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:22,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-17 07:34:22,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:22,803 INFO L124 PetriNetUnfolderBase]: 2052/4006 cut-off events. [2024-11-17 07:34:22,803 INFO L125 PetriNetUnfolderBase]: For 4463/4761 co-relation queries the response was YES. [2024-11-17 07:34:22,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10673 conditions, 4006 events. 2052/4006 cut-off events. For 4463/4761 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 28710 event pairs, 324 based on Foata normal form. 222/4050 useless extension candidates. Maximal degree in co-relation 10647. Up to 1562 conditions per place. [2024-11-17 07:34:22,822 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 64 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2024-11-17 07:34:22,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 80 transitions, 559 flow [2024-11-17 07:34:22,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:34:22,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:34:22,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-11-17 07:34:22,823 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5855263157894737 [2024-11-17 07:34:22,823 INFO L175 Difference]: Start difference. First operand has 66 places, 50 transitions, 272 flow. Second operand 4 states and 89 transitions. [2024-11-17 07:34:22,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 80 transitions, 559 flow [2024-11-17 07:34:22,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 80 transitions, 558 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:34:22,828 INFO L231 Difference]: Finished difference. Result has 67 places, 49 transitions, 279 flow [2024-11-17 07:34:22,829 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=279, PETRI_PLACES=67, PETRI_TRANSITIONS=49} [2024-11-17 07:34:22,829 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 28 predicate places. [2024-11-17 07:34:22,829 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 49 transitions, 279 flow [2024-11-17 07:34:22,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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) [2024-11-17 07:34:22,829 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:22,830 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-17 07:34:22,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 07:34:23,033 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 [2024-11-17 07:34:23,034 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:23,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:23,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1294237833, now seen corresponding path program 1 times [2024-11-17 07:34:23,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:23,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787833328] [2024-11-17 07:34:23,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:23,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:23,058 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:34:23,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:23,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787833328] [2024-11-17 07:34:23,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787833328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:23,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:23,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:34:23,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463391277] [2024-11-17 07:34:23,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:23,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:34:23,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:23,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:34:23,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:34:23,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-17 07:34:23,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 49 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:23,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:23,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-17 07:34:23,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:23,284 INFO L124 PetriNetUnfolderBase]: 1777/3615 cut-off events. [2024-11-17 07:34:23,285 INFO L125 PetriNetUnfolderBase]: For 4768/5006 co-relation queries the response was YES. [2024-11-17 07:34:23,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10048 conditions, 3615 events. 1777/3615 cut-off events. For 4768/5006 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 25960 event pairs, 472 based on Foata normal form. 210/3751 useless extension candidates. Maximal degree in co-relation 10022. Up to 1262 conditions per place. [2024-11-17 07:34:23,300 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 64 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2024-11-17 07:34:23,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 80 transitions, 568 flow [2024-11-17 07:34:23,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:34:23,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:34:23,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-11-17 07:34:23,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5855263157894737 [2024-11-17 07:34:23,301 INFO L175 Difference]: Start difference. First operand has 67 places, 49 transitions, 279 flow. Second operand 4 states and 89 transitions. [2024-11-17 07:34:23,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 80 transitions, 568 flow [2024-11-17 07:34:23,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 80 transitions, 556 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:34:23,307 INFO L231 Difference]: Finished difference. Result has 67 places, 49 transitions, 283 flow [2024-11-17 07:34:23,307 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=283, PETRI_PLACES=67, PETRI_TRANSITIONS=49} [2024-11-17 07:34:23,308 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 28 predicate places. [2024-11-17 07:34:23,308 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 49 transitions, 283 flow [2024-11-17 07:34:23,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:23,308 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:23,308 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:23,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 07:34:23,308 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:23,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:23,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1410925633, now seen corresponding path program 1 times [2024-11-17 07:34:23,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:23,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140991481] [2024-11-17 07:34:23,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:23,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:23,356 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:23,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:23,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140991481] [2024-11-17 07:34:23,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140991481] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:23,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351077806] [2024-11-17 07:34:23,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:23,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:23,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:23,358 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:34:23,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:34:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:23,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:34:23,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:23,442 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:23,442 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:34:23,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351077806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:23,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:34:23,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-17 07:34:23,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791015081] [2024-11-17 07:34:23,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:23,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:34:23,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:23,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:34:23,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:34:23,455 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-17 07:34:23,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 49 transitions, 283 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:23,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:23,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-17 07:34:23,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:23,735 INFO L124 PetriNetUnfolderBase]: 1713/3474 cut-off events. [2024-11-17 07:34:23,735 INFO L125 PetriNetUnfolderBase]: For 6067/6174 co-relation queries the response was YES. [2024-11-17 07:34:23,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9687 conditions, 3474 events. 1713/3474 cut-off events. For 6067/6174 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 24806 event pairs, 147 based on Foata normal form. 222/3571 useless extension candidates. Maximal degree in co-relation 9661. Up to 1291 conditions per place. [2024-11-17 07:34:23,752 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 82 selfloop transitions, 6 changer transitions 1/99 dead transitions. [2024-11-17 07:34:23,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 99 transitions, 728 flow [2024-11-17 07:34:23,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:34:23,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:34:23,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-11-17 07:34:23,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-17 07:34:23,753 INFO L175 Difference]: Start difference. First operand has 67 places, 49 transitions, 283 flow. Second operand 6 states and 133 transitions. [2024-11-17 07:34:23,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 99 transitions, 728 flow [2024-11-17 07:34:23,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 99 transitions, 708 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:34:23,759 INFO L231 Difference]: Finished difference. Result has 69 places, 48 transitions, 283 flow [2024-11-17 07:34:23,760 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=69, PETRI_TRANSITIONS=48} [2024-11-17 07:34:23,760 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 30 predicate places. [2024-11-17 07:34:23,760 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 48 transitions, 283 flow [2024-11-17 07:34:23,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:23,761 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:23,761 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:23,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-17 07:34:23,964 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 [2024-11-17 07:34:23,965 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:23,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:23,966 INFO L85 PathProgramCache]: Analyzing trace with hash 789021841, now seen corresponding path program 1 times [2024-11-17 07:34:23,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:23,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378672910] [2024-11-17 07:34:23,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:23,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:23,996 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:34:23,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:23,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378672910] [2024-11-17 07:34:23,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378672910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:23,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:23,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:34:23,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727813715] [2024-11-17 07:34:23,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:23,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:34:23,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:23,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:34:23,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:34:24,009 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-17 07:34:24,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 48 transitions, 283 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:24,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:24,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-17 07:34:24,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:24,212 INFO L124 PetriNetUnfolderBase]: 1767/3455 cut-off events. [2024-11-17 07:34:24,212 INFO L125 PetriNetUnfolderBase]: For 5436/5533 co-relation queries the response was YES. [2024-11-17 07:34:24,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10140 conditions, 3455 events. 1767/3455 cut-off events. For 5436/5533 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 23667 event pairs, 486 based on Foata normal form. 212/3585 useless extension candidates. Maximal degree in co-relation 10113. Up to 1242 conditions per place. [2024-11-17 07:34:24,227 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 60 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2024-11-17 07:34:24,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 75 transitions, 558 flow [2024-11-17 07:34:24,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:34:24,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:34:24,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-11-17 07:34:24,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5592105263157895 [2024-11-17 07:34:24,228 INFO L175 Difference]: Start difference. First operand has 69 places, 48 transitions, 283 flow. Second operand 4 states and 85 transitions. [2024-11-17 07:34:24,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 75 transitions, 558 flow [2024-11-17 07:34:24,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 75 transitions, 548 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-17 07:34:24,236 INFO L231 Difference]: Finished difference. Result has 68 places, 48 transitions, 289 flow [2024-11-17 07:34:24,236 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=289, PETRI_PLACES=68, PETRI_TRANSITIONS=48} [2024-11-17 07:34:24,237 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 29 predicate places. [2024-11-17 07:34:24,237 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 48 transitions, 289 flow [2024-11-17 07:34:24,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:24,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:24,237 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:24,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-17 07:34:24,238 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:24,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:24,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1099637651, now seen corresponding path program 1 times [2024-11-17 07:34:24,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:24,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626651441] [2024-11-17 07:34:24,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:24,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:24,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:24,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:24,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626651441] [2024-11-17 07:34:24,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626651441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:24,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485872298] [2024-11-17 07:34:24,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:24,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:24,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:24,281 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:34:24,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 07:34:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:24,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:34:24,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:24,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:24,358 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:34:24,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:24,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485872298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:34:24,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:34:24,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-17 07:34:24,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687583399] [2024-11-17 07:34:24,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:34:24,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 07:34:24,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:24,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 07:34:24,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:34:24,391 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 07:34:24,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 48 transitions, 289 flow. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:24,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:24,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 07:34:24,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:24,640 INFO L124 PetriNetUnfolderBase]: 1339/3189 cut-off events. [2024-11-17 07:34:24,640 INFO L125 PetriNetUnfolderBase]: For 6918/6960 co-relation queries the response was YES. [2024-11-17 07:34:24,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9017 conditions, 3189 events. 1339/3189 cut-off events. For 6918/6960 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 22769 event pairs, 119 based on Foata normal form. 232/3394 useless extension candidates. Maximal degree in co-relation 8991. Up to 507 conditions per place. [2024-11-17 07:34:24,655 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 69 selfloop transitions, 12 changer transitions 8/103 dead transitions. [2024-11-17 07:34:24,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 103 transitions, 700 flow [2024-11-17 07:34:24,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:34:24,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:34:24,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-11-17 07:34:24,656 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6992481203007519 [2024-11-17 07:34:24,656 INFO L175 Difference]: Start difference. First operand has 68 places, 48 transitions, 289 flow. Second operand 7 states and 186 transitions. [2024-11-17 07:34:24,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 103 transitions, 700 flow [2024-11-17 07:34:24,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 103 transitions, 685 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-17 07:34:24,663 INFO L231 Difference]: Finished difference. Result has 77 places, 54 transitions, 397 flow [2024-11-17 07:34:24,663 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=397, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2024-11-17 07:34:24,664 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 38 predicate places. [2024-11-17 07:34:24,664 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 397 flow [2024-11-17 07:34:24,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:24,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:24,664 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:24,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 07:34:24,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:24,865 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:24,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:24,866 INFO L85 PathProgramCache]: Analyzing trace with hash 273379351, now seen corresponding path program 1 times [2024-11-17 07:34:24,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:24,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146655949] [2024-11-17 07:34:24,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:24,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:24,913 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:24,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:24,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146655949] [2024-11-17 07:34:24,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146655949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:24,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253254951] [2024-11-17 07:34:24,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:24,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:24,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:24,915 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:34:24,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 07:34:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:24,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:34:24,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:24,993 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:24,994 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:34:25,056 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:25,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253254951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:34:25,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:34:25,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-17 07:34:25,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625272551] [2024-11-17 07:34:25,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:34:25,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:34:25,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:25,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:34:25,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:34:25,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 07:34:25,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 397 flow. Second operand has 12 states, 12 states have (on average 18.333333333333332) internal successors, (220), 12 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:25,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:25,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 07:34:25,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:25,517 INFO L124 PetriNetUnfolderBase]: 1744/4323 cut-off events. [2024-11-17 07:34:25,517 INFO L125 PetriNetUnfolderBase]: For 12796/12831 co-relation queries the response was YES. [2024-11-17 07:34:25,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12594 conditions, 4323 events. 1744/4323 cut-off events. For 12796/12831 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 30967 event pairs, 59 based on Foata normal form. 205/4521 useless extension candidates. Maximal degree in co-relation 12561. Up to 420 conditions per place. [2024-11-17 07:34:25,536 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 100 selfloop transitions, 17 changer transitions 17/148 dead transitions. [2024-11-17 07:34:25,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 148 transitions, 1043 flow [2024-11-17 07:34:25,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 07:34:25,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-17 07:34:25,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 316 transitions. [2024-11-17 07:34:25,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6929824561403509 [2024-11-17 07:34:25,538 INFO L175 Difference]: Start difference. First operand has 77 places, 54 transitions, 397 flow. Second operand 12 states and 316 transitions. [2024-11-17 07:34:25,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 148 transitions, 1043 flow [2024-11-17 07:34:25,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 148 transitions, 994 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-11-17 07:34:25,551 INFO L231 Difference]: Finished difference. Result has 92 places, 56 transitions, 443 flow [2024-11-17 07:34:25,551 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=443, PETRI_PLACES=92, PETRI_TRANSITIONS=56} [2024-11-17 07:34:25,551 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 53 predicate places. [2024-11-17 07:34:25,551 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 56 transitions, 443 flow [2024-11-17 07:34:25,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.333333333333332) internal successors, (220), 12 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:25,552 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:25,552 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:25,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 07:34:25,755 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 [2024-11-17 07:34:25,756 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:25,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:25,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2013372279, now seen corresponding path program 1 times [2024-11-17 07:34:25,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:25,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612652316] [2024-11-17 07:34:25,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:25,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:25,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:25,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612652316] [2024-11-17 07:34:25,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612652316] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:25,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950057008] [2024-11-17 07:34:25,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:25,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:25,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:25,848 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:34:25,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 07:34:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:25,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 07:34:25,896 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:25,939 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:25,939 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:34:26,031 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:26,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950057008] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:34:26,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:34:26,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-17 07:34:26,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211752833] [2024-11-17 07:34:26,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:34:26,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-17 07:34:26,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:26,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-17 07:34:26,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-17 07:34:26,033 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 07:34:26,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 56 transitions, 443 flow. Second operand has 16 states, 16 states have (on average 18.25) internal successors, (292), 16 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:26,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:26,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 07:34:26,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:26,773 INFO L124 PetriNetUnfolderBase]: 2554/6279 cut-off events. [2024-11-17 07:34:26,773 INFO L125 PetriNetUnfolderBase]: For 19680/19722 co-relation queries the response was YES. [2024-11-17 07:34:26,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18277 conditions, 6279 events. 2554/6279 cut-off events. For 19680/19722 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 45728 event pairs, 119 based on Foata normal form. 192/6444 useless extension candidates. Maximal degree in co-relation 18237. Up to 521 conditions per place. [2024-11-17 07:34:26,793 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 120 selfloop transitions, 24 changer transitions 25/183 dead transitions. [2024-11-17 07:34:26,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 183 transitions, 1320 flow [2024-11-17 07:34:26,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-17 07:34:26,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-17 07:34:26,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 394 transitions. [2024-11-17 07:34:26,795 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6912280701754386 [2024-11-17 07:34:26,795 INFO L175 Difference]: Start difference. First operand has 92 places, 56 transitions, 443 flow. Second operand 15 states and 394 transitions. [2024-11-17 07:34:26,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 183 transitions, 1320 flow [2024-11-17 07:34:26,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 183 transitions, 1307 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-17 07:34:26,814 INFO L231 Difference]: Finished difference. Result has 110 places, 64 transitions, 594 flow [2024-11-17 07:34:26,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=594, PETRI_PLACES=110, PETRI_TRANSITIONS=64} [2024-11-17 07:34:26,815 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 71 predicate places. [2024-11-17 07:34:26,816 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 64 transitions, 594 flow [2024-11-17 07:34:26,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.25) internal successors, (292), 16 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:26,816 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:26,816 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:26,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-17 07:34:27,016 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 [2024-11-17 07:34:27,017 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:27,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:27,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1968246019, now seen corresponding path program 2 times [2024-11-17 07:34:27,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:27,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823671222] [2024-11-17 07:34:27,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:27,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:27,192 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:27,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:27,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823671222] [2024-11-17 07:34:27,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823671222] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:27,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001384325] [2024-11-17 07:34:27,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:34:27,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:27,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:27,194 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:34:27,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 07:34:27,252 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:34:27,252 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:34:27,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 07:34:27,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:27,335 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:27,336 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:34:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:27,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001384325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:34:27,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:34:27,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2024-11-17 07:34:27,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310505565] [2024-11-17 07:34:27,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:34:27,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-17 07:34:27,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:27,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-17 07:34:27,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2024-11-17 07:34:27,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 07:34:27,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 64 transitions, 594 flow. Second operand has 28 states, 28 states have (on average 18.142857142857142) internal successors, (508), 28 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:27,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:27,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 07:34:27,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:29,201 INFO L124 PetriNetUnfolderBase]: 4336/10755 cut-off events. [2024-11-17 07:34:29,201 INFO L125 PetriNetUnfolderBase]: For 48909/48944 co-relation queries the response was YES. [2024-11-17 07:34:29,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31535 conditions, 10755 events. 4336/10755 cut-off events. For 48909/48944 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 78272 event pairs, 59 based on Foata normal form. 365/11113 useless extension candidates. Maximal degree in co-relation 31487. Up to 851 conditions per place. [2024-11-17 07:34:29,242 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 212 selfloop transitions, 41 changer transitions 49/316 dead transitions. [2024-11-17 07:34:29,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 316 transitions, 2298 flow [2024-11-17 07:34:29,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-17 07:34:29,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-17 07:34:29,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 737 transitions. [2024-11-17 07:34:29,244 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6926691729323309 [2024-11-17 07:34:29,244 INFO L175 Difference]: Start difference. First operand has 110 places, 64 transitions, 594 flow. Second operand 28 states and 737 transitions. [2024-11-17 07:34:29,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 316 transitions, 2298 flow [2024-11-17 07:34:29,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 316 transitions, 2218 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-17 07:34:29,277 INFO L231 Difference]: Finished difference. Result has 144 places, 80 transitions, 856 flow [2024-11-17 07:34:29,278 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=856, PETRI_PLACES=144, PETRI_TRANSITIONS=80} [2024-11-17 07:34:29,278 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 105 predicate places. [2024-11-17 07:34:29,278 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 80 transitions, 856 flow [2024-11-17 07:34:29,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 18.142857142857142) internal successors, (508), 28 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:29,279 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:29,279 INFO L204 CegarLoopForPetriNet]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:29,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-17 07:34:29,479 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 [2024-11-17 07:34:29,479 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:29,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:29,480 INFO L85 PathProgramCache]: Analyzing trace with hash 606573191, now seen corresponding path program 2 times [2024-11-17 07:34:29,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:29,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108343770] [2024-11-17 07:34:29,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:29,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:29,917 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 0 proven. 663 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:29,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:29,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108343770] [2024-11-17 07:34:29,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108343770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:29,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088040001] [2024-11-17 07:34:29,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:34:29,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:29,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:29,920 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:34:29,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 07:34:29,982 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:34:29,982 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:34:29,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-17 07:34:29,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:30,121 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 0 proven. 663 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:30,121 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:34:30,637 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 0 proven. 663 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:30,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088040001] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:34:30,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:34:30,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2024-11-17 07:34:30,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318972868] [2024-11-17 07:34:30,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:34:30,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-17 07:34:30,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:30,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-17 07:34:30,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=1656, Unknown=0, NotChecked=0, Total=2256 [2024-11-17 07:34:30,641 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 07:34:30,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 80 transitions, 856 flow. Second operand has 48 states, 48 states have (on average 18.083333333333332) internal successors, (868), 48 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:30,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:30,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 07:34:30,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:34,537 INFO L124 PetriNetUnfolderBase]: 7738/19143 cut-off events. [2024-11-17 07:34:34,537 INFO L125 PetriNetUnfolderBase]: For 138350/138392 co-relation queries the response was YES. [2024-11-17 07:34:34,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56028 conditions, 19143 events. 7738/19143 cut-off events. For 138350/138392 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 140270 event pairs, 119 based on Foata normal form. 672/19788 useless extension candidates. Maximal degree in co-relation 55967. Up to 1481 conditions per place. [2024-11-17 07:34:34,630 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 344 selfloop transitions, 72 changer transitions 89/519 dead transitions. [2024-11-17 07:34:34,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 519 transitions, 3821 flow [2024-11-17 07:34:34,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-17 07:34:34,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-17 07:34:34,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 1242 transitions. [2024-11-17 07:34:34,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6954087346024636 [2024-11-17 07:34:34,632 INFO L175 Difference]: Start difference. First operand has 144 places, 80 transitions, 856 flow. Second operand 47 states and 1242 transitions. [2024-11-17 07:34:34,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 519 transitions, 3821 flow [2024-11-17 07:34:34,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 519 transitions, 3675 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-17 07:34:34,728 INFO L231 Difference]: Finished difference. Result has 202 places, 112 transitions, 1362 flow [2024-11-17 07:34:34,728 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=1362, PETRI_PLACES=202, PETRI_TRANSITIONS=112} [2024-11-17 07:34:34,728 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 163 predicate places. [2024-11-17 07:34:34,728 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 112 transitions, 1362 flow [2024-11-17 07:34:34,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 18.083333333333332) internal successors, (868), 48 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:34,729 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:34,729 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:34,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-17 07:34:34,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:34,933 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2024-11-17 07:34:34,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:34,934 INFO L85 PathProgramCache]: Analyzing trace with hash 904200741, now seen corresponding path program 3 times [2024-11-17 07:34:34,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:34,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186251369] [2024-11-17 07:34:34,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:34,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:36,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:36,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:36,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186251369] [2024-11-17 07:34:36,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186251369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:36,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049137910] [2024-11-17 07:34:36,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 07:34:36,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:36,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:36,131 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:34:36,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 07:34:36,233 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2024-11-17 07:34:36,233 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:34:36,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-17 07:34:36,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:37,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 2767 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 07:34:37,543 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:34:37,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049137910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:37,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:34:37,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [45] total 90 [2024-11-17 07:34:37,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874407527] [2024-11-17 07:34:37,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:37,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-17 07:34:37,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:37,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-17 07:34:37,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1102, Invalid=6908, Unknown=0, NotChecked=0, Total=8010 [2024-11-17 07:34:37,581 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-17 07:34:37,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 112 transitions, 1362 flow. Second operand has 45 states, 45 states have (on average 14.044444444444444) internal successors, (632), 45 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:34:37,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:37,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-17 07:34:37,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand