./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/triangular-longer-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-longer-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 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:34:09,702 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:34:09,767 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:34:09,773 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:34:09,774 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:34:09,803 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:34:09,804 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:34:09,804 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:34:09,805 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:34:09,805 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:34:09,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:34:09,806 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:34:09,806 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:34:09,807 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:34:09,807 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:34:09,808 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:34:09,808 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:34:09,808 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:34:09,809 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:34:09,809 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:34:09,812 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:34:09,812 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:34:09,813 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:34:09,813 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:34:09,813 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:34:09,814 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:34:09,814 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:34:09,814 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:34:09,814 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:34:09,815 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:34:09,815 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:34:09,815 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:34:09,816 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:34:09,816 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:34:09,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:34:09,817 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:34:09,817 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:34:09,817 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:34:09,817 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:34:09,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:34:09,818 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:34:09,818 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:34:09,819 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:34:09,819 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:34:09,820 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 [2024-11-17 07:34:10,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:34:10,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:34:10,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:34:10,106 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:34:10,107 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:34:10,108 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longer-1.i [2024-11-17 07:34:11,540 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:34:11,756 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:34:11,757 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-1.i [2024-11-17 07:34:11,772 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7eb45cd08/bb3d6c1daca84fdba2f72f574f9bfbf5/FLAGe73e9dfb4 [2024-11-17 07:34:11,789 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7eb45cd08/bb3d6c1daca84fdba2f72f574f9bfbf5 [2024-11-17 07:34:11,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:34:11,793 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:34:11,794 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:34:11,794 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:34:11,802 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:34:11,802 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:34:11" (1/1) ... [2024-11-17 07:34:11,803 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75f7f569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:11, skipping insertion in model container [2024-11-17 07:34:11,803 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:34:11" (1/1) ... [2024-11-17 07:34:11,840 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:34:12,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:34:12,189 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:34:12,235 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:34:12,279 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:34:12,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:12 WrapperNode [2024-11-17 07:34:12,280 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:34:12,281 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:34:12,281 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:34:12,281 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:34:12,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:12" (1/1) ... [2024-11-17 07:34:12,305 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:12" (1/1) ... [2024-11-17 07:34:12,326 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2024-11-17 07:34:12,327 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:34:12,328 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:34:12,328 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:34:12,328 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:34:12,338 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:12" (1/1) ... [2024-11-17 07:34:12,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:12" (1/1) ... [2024-11-17 07:34:12,341 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:12" (1/1) ... [2024-11-17 07:34:12,356 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 07:34:12,359 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:12" (1/1) ... [2024-11-17 07:34:12,359 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:12" (1/1) ... [2024-11-17 07:34:12,367 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:12" (1/1) ... [2024-11-17 07:34:12,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:12" (1/1) ... [2024-11-17 07:34:12,368 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:12" (1/1) ... [2024-11-17 07:34:12,369 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:12" (1/1) ... [2024-11-17 07:34:12,375 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:34:12,376 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:34:12,376 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:34:12,376 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:34:12,377 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:12" (1/1) ... [2024-11-17 07:34:12,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:34:12,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:12,411 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 07:34:12,414 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 07:34:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-17 07:34:12,464 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-17 07:34:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-17 07:34:12,464 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-17 07:34:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-17 07:34:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:34:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:34:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-17 07:34:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:34:12,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:34:12,468 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 07:34:12,602 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:34:12,605 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:34:12,757 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:34:12,757 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:34:12,847 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:34:12,848 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:34:12,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:34:12 BoogieIcfgContainer [2024-11-17 07:34:12,848 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:34:12,851 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:34:12,851 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:34:12,854 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:34:12,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:34:11" (1/3) ... [2024-11-17 07:34:12,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a336a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:34:12, skipping insertion in model container [2024-11-17 07:34:12,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:34:12" (2/3) ... [2024-11-17 07:34:12,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a336a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:34:12, skipping insertion in model container [2024-11-17 07:34:12,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:34:12" (3/3) ... [2024-11-17 07:34:12,857 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2024-11-17 07:34:12,873 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:34:12,873 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-17 07:34:12,874 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:34:12,965 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 07:34:12,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 38 transitions, 84 flow [2024-11-17 07:34:13,039 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-11-17 07:34:13,039 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:34:13,044 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 07:34:13,045 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 38 transitions, 84 flow [2024-11-17 07:34:13,048 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 36 transitions, 78 flow [2024-11-17 07:34:13,063 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:34:13,073 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;@117b72f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:34:13,073 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-17 07:34:13,082 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:34:13,083 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-11-17 07:34:13,083 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:34:13,083 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:13,084 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:34:13,085 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 07:34:13,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:13,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1662760112, now seen corresponding path program 1 times [2024-11-17 07:34:13,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:13,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786423405] [2024-11-17 07:34:13,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:13,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:13,379 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 07:34:13,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:13,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786423405] [2024-11-17 07:34:13,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786423405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:13,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:13,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:34:13,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951704250] [2024-11-17 07:34:13,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:13,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:34:13,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:13,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:34:13,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:34:13,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 07:34:13,430 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 07:34:13,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:13,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 07:34:13,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:13,689 INFO L124 PetriNetUnfolderBase]: 510/1020 cut-off events. [2024-11-17 07:34:13,689 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-17 07:34:13,694 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 07:34:13,700 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 31 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2024-11-17 07:34:13,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 170 flow [2024-11-17 07:34:13,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:34:13,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:34:13,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-11-17 07:34:13,711 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7631578947368421 [2024-11-17 07:34:13,712 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 78 flow. Second operand 3 states and 87 transitions. [2024-11-17 07:34:13,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 48 transitions, 170 flow [2024-11-17 07:34:13,716 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 07:34:13,718 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 94 flow [2024-11-17 07:34:13,720 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 07:34:13,724 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2024-11-17 07:34:13,725 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 94 flow [2024-11-17 07:34:13,725 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 07:34:13,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:13,725 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:34:13,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:34:13,725 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 07:34:13,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:13,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1662760113, now seen corresponding path program 1 times [2024-11-17 07:34:13,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:13,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159881123] [2024-11-17 07:34:13,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:13,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:13,803 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 07:34:13,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:13,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159881123] [2024-11-17 07:34:13,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159881123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:13,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:13,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:34:13,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374727894] [2024-11-17 07:34:13,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:13,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:34:13,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:13,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:34:13,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:34:13,808 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 07:34:13,808 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 07:34:13,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:13,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 07:34:13,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:13,963 INFO L124 PetriNetUnfolderBase]: 499/1056 cut-off events. [2024-11-17 07:34:13,964 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2024-11-17 07:34:13,970 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 07:34:13,984 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 31 selfloop transitions, 4 changer transitions 0/49 dead transitions. [2024-11-17 07:34:13,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 49 transitions, 194 flow [2024-11-17 07:34:13,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:34:13,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:34:13,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-11-17 07:34:13,986 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7192982456140351 [2024-11-17 07:34:13,986 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 94 flow. Second operand 3 states and 82 transitions. [2024-11-17 07:34:13,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 49 transitions, 194 flow [2024-11-17 07:34:13,988 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 07:34:13,995 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 108 flow [2024-11-17 07:34:13,999 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 07:34:13,999 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2024-11-17 07:34:14,000 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 108 flow [2024-11-17 07:34:14,000 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 07:34:14,000 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:14,000 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:14,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 07:34:14,001 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 07:34:14,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:14,005 INFO L85 PathProgramCache]: Analyzing trace with hash -447665372, now seen corresponding path program 1 times [2024-11-17 07:34:14,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:14,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595437083] [2024-11-17 07:34:14,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:14,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:14,123 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 07:34:14,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:14,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595437083] [2024-11-17 07:34:14,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595437083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:14,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:14,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:34:14,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122332062] [2024-11-17 07:34:14,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:14,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:34:14,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:14,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:34:14,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:34:14,128 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 07:34:14,128 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 07:34:14,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:14,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 07:34:14,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:14,313 INFO L124 PetriNetUnfolderBase]: 743/1706 cut-off events. [2024-11-17 07:34:14,314 INFO L125 PetriNetUnfolderBase]: For 551/551 co-relation queries the response was YES. [2024-11-17 07:34:14,318 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 07:34:14,327 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 39 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2024-11-17 07:34:14,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 257 flow [2024-11-17 07:34:14,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:34:14,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:34:14,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-17 07:34:14,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7456140350877193 [2024-11-17 07:34:14,332 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 108 flow. Second operand 3 states and 85 transitions. [2024-11-17 07:34:14,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 257 flow [2024-11-17 07:34:14,336 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 07:34:14,337 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 126 flow [2024-11-17 07:34:14,337 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 07:34:14,339 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2024-11-17 07:34:14,339 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 126 flow [2024-11-17 07:34:14,340 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 07:34:14,340 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:14,340 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:14,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:34:14,340 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 07:34:14,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:14,341 INFO L85 PathProgramCache]: Analyzing trace with hash -447665371, now seen corresponding path program 1 times [2024-11-17 07:34:14,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:14,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247068576] [2024-11-17 07:34:14,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:14,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:14,399 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 07:34:14,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:14,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247068576] [2024-11-17 07:34:14,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247068576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:14,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:14,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:34:14,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004056018] [2024-11-17 07:34:14,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:14,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:34:14,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:14,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:34:14,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:34:14,402 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 07:34:14,402 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 07:34:14,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:14,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 07:34:14,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:14,608 INFO L124 PetriNetUnfolderBase]: 717/1780 cut-off events. [2024-11-17 07:34:14,609 INFO L125 PetriNetUnfolderBase]: For 804/804 co-relation queries the response was YES. [2024-11-17 07:34:14,612 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 07:34:14,620 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 39 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-11-17 07:34:14,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 57 transitions, 276 flow [2024-11-17 07:34:14,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:34:14,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:34:14,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-11-17 07:34:14,622 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2024-11-17 07:34:14,623 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 126 flow. Second operand 3 states and 84 transitions. [2024-11-17 07:34:14,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 57 transitions, 276 flow [2024-11-17 07:34:14,626 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 07:34:14,627 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 140 flow [2024-11-17 07:34:14,627 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 07:34:14,628 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2024-11-17 07:34:14,629 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 140 flow [2024-11-17 07:34:14,629 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 07:34:14,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:14,630 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:14,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:34:14,631 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 07:34:14,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:14,631 INFO L85 PathProgramCache]: Analyzing trace with hash 184641588, now seen corresponding path program 1 times [2024-11-17 07:34:14,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:14,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606366353] [2024-11-17 07:34:14,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:14,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:14,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:14,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:14,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:14,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606366353] [2024-11-17 07:34:14,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606366353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:14,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:14,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:34:14,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231389906] [2024-11-17 07:34:14,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:14,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:34:14,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:14,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:34:14,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:34:14,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-17 07:34:14,711 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 07:34:14,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:14,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-17 07:34:14,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:15,006 INFO L124 PetriNetUnfolderBase]: 1277/2598 cut-off events. [2024-11-17 07:34:15,006 INFO L125 PetriNetUnfolderBase]: For 1604/1604 co-relation queries the response was YES. [2024-11-17 07:34:15,012 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 07:34:15,023 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 59 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2024-11-17 07:34:15,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 72 transitions, 376 flow [2024-11-17 07:34:15,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:34:15,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:34:15,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-17 07:34:15,026 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2024-11-17 07:34:15,026 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 140 flow. Second operand 4 states and 104 transitions. [2024-11-17 07:34:15,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 72 transitions, 376 flow [2024-11-17 07:34:15,030 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 07:34:15,033 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 160 flow [2024-11-17 07:34:15,033 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 07:34:15,034 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 11 predicate places. [2024-11-17 07:34:15,036 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 160 flow [2024-11-17 07:34:15,036 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 07:34:15,036 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:15,036 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:15,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:34:15,037 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 07:34:15,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:15,037 INFO L85 PathProgramCache]: Analyzing trace with hash -709684376, now seen corresponding path program 1 times [2024-11-17 07:34:15,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:15,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043236052] [2024-11-17 07:34:15,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:15,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:15,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:15,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043236052] [2024-11-17 07:34:15,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043236052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:15,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:15,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:34:15,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013635661] [2024-11-17 07:34:15,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:15,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:34:15,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:15,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:34:15,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:34:15,118 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-17 07:34:15,119 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 07:34:15,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:15,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-17 07:34:15,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:15,402 INFO L124 PetriNetUnfolderBase]: 1303/2577 cut-off events. [2024-11-17 07:34:15,402 INFO L125 PetriNetUnfolderBase]: For 1695/1915 co-relation queries the response was YES. [2024-11-17 07:34:15,407 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 07:34:15,421 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 58 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2024-11-17 07:34:15,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 72 transitions, 400 flow [2024-11-17 07:34:15,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:34:15,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:34:15,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-11-17 07:34:15,424 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2024-11-17 07:34:15,424 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 160 flow. Second operand 4 states and 100 transitions. [2024-11-17 07:34:15,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 72 transitions, 400 flow [2024-11-17 07:34:15,430 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 07:34:15,432 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 182 flow [2024-11-17 07:34:15,432 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 07:34:15,433 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 15 predicate places. [2024-11-17 07:34:15,434 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 182 flow [2024-11-17 07:34:15,434 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 07:34:15,435 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:15,435 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:15,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:34:15,435 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 07:34:15,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:15,436 INFO L85 PathProgramCache]: Analyzing trace with hash 698961642, now seen corresponding path program 1 times [2024-11-17 07:34:15,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:15,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413474060] [2024-11-17 07:34:15,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:15,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:34:15,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:15,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413474060] [2024-11-17 07:34:15,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413474060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:15,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:15,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:34:15,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699688821] [2024-11-17 07:34:15,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:15,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:34:15,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:15,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:34:15,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:34:15,496 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 07:34:15,496 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 07:34:15,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:15,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 07:34:15,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:15,773 INFO L124 PetriNetUnfolderBase]: 1021/2469 cut-off events. [2024-11-17 07:34:15,774 INFO L125 PetriNetUnfolderBase]: For 1773/2024 co-relation queries the response was YES. [2024-11-17 07:34:15,780 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 07:34:15,793 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 58 selfloop transitions, 11 changer transitions 0/85 dead transitions. [2024-11-17 07:34:15,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 85 transitions, 475 flow [2024-11-17 07:34:15,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:34:15,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:34:15,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-11-17 07:34:15,795 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7157894736842105 [2024-11-17 07:34:15,795 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 182 flow. Second operand 5 states and 136 transitions. [2024-11-17 07:34:15,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 85 transitions, 475 flow [2024-11-17 07:34:15,800 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 07:34:15,801 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 280 flow [2024-11-17 07:34:15,801 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 07:34:15,802 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 22 predicate places. [2024-11-17 07:34:15,802 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 280 flow [2024-11-17 07:34:15,802 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 07:34:15,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:15,803 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:15,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 07:34:15,803 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 07:34:15,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:15,804 INFO L85 PathProgramCache]: Analyzing trace with hash 698961641, now seen corresponding path program 1 times [2024-11-17 07:34:15,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:15,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313484029] [2024-11-17 07:34:15,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:15,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:15,842 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 07:34:15,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:15,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313484029] [2024-11-17 07:34:15,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313484029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:15,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:15,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:34:15,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172057282] [2024-11-17 07:34:15,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:15,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:34:15,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:15,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:34:15,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:34:15,845 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 07:34:15,845 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 07:34:15,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:15,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 07:34:15,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:16,141 INFO L124 PetriNetUnfolderBase]: 1098/2834 cut-off events. [2024-11-17 07:34:16,142 INFO L125 PetriNetUnfolderBase]: For 4156/4409 co-relation queries the response was YES. [2024-11-17 07:34:16,150 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 07:34:16,165 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 63 selfloop transitions, 9 changer transitions 0/88 dead transitions. [2024-11-17 07:34:16,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 88 transitions, 564 flow [2024-11-17 07:34:16,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:34:16,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:34:16,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-11-17 07:34:16,167 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7210526315789474 [2024-11-17 07:34:16,167 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 280 flow. Second operand 5 states and 137 transitions. [2024-11-17 07:34:16,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 88 transitions, 564 flow [2024-11-17 07:34:16,173 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 07:34:16,175 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 335 flow [2024-11-17 07:34:16,175 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 07:34:16,176 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 26 predicate places. [2024-11-17 07:34:16,176 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 335 flow [2024-11-17 07:34:16,176 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 07:34:16,177 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:16,179 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:16,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 07:34:16,180 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 07:34:16,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:16,180 INFO L85 PathProgramCache]: Analyzing trace with hash -438157864, now seen corresponding path program 1 times [2024-11-17 07:34:16,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:16,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543847108] [2024-11-17 07:34:16,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:16,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:16,234 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 07:34:16,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:16,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543847108] [2024-11-17 07:34:16,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543847108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:16,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:16,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:34:16,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150677232] [2024-11-17 07:34:16,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:16,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:34:16,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:16,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:34:16,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:34:16,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 07:34:16,237 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 07:34:16,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:16,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 07:34:16,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:16,571 INFO L124 PetriNetUnfolderBase]: 1280/3296 cut-off events. [2024-11-17 07:34:16,572 INFO L125 PetriNetUnfolderBase]: For 5337/5635 co-relation queries the response was YES. [2024-11-17 07:34:16,580 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 07:34:16,591 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 68 selfloop transitions, 13 changer transitions 0/97 dead transitions. [2024-11-17 07:34:16,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 97 transitions, 672 flow [2024-11-17 07:34:16,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:34:16,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:34:16,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-11-17 07:34:16,593 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2024-11-17 07:34:16,593 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 335 flow. Second operand 5 states and 140 transitions. [2024-11-17 07:34:16,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 97 transitions, 672 flow [2024-11-17 07:34:16,601 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 07:34:16,602 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 443 flow [2024-11-17 07:34:16,603 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 07:34:16,603 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 34 predicate places. [2024-11-17 07:34:16,603 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 443 flow [2024-11-17 07:34:16,604 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 07:34:16,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:16,604 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:16,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 07:34:16,604 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 07:34:16,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:16,605 INFO L85 PathProgramCache]: Analyzing trace with hash -438157865, now seen corresponding path program 1 times [2024-11-17 07:34:16,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:16,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557543712] [2024-11-17 07:34:16,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:16,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:16,637 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 07:34:16,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:16,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557543712] [2024-11-17 07:34:16,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557543712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:16,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:16,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:34:16,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183950904] [2024-11-17 07:34:16,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:16,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:34:16,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:16,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:34:16,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:34:16,643 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 07:34:16,643 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 07:34:16,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:16,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 07:34:16,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:16,866 INFO L124 PetriNetUnfolderBase]: 1002/2433 cut-off events. [2024-11-17 07:34:16,866 INFO L125 PetriNetUnfolderBase]: For 6471/6772 co-relation queries the response was YES. [2024-11-17 07:34:16,874 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 07:34:16,884 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 33 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2024-11-17 07:34:16,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 50 transitions, 372 flow [2024-11-17 07:34:16,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:34:16,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:34:16,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-11-17 07:34:16,885 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5964912280701754 [2024-11-17 07:34:16,885 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 443 flow. Second operand 3 states and 68 transitions. [2024-11-17 07:34:16,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 50 transitions, 372 flow [2024-11-17 07:34:16,893 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 07:34:16,894 INFO L231 Difference]: Finished difference. Result has 66 places, 50 transitions, 272 flow [2024-11-17 07:34:16,895 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 07:34:16,895 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 27 predicate places. [2024-11-17 07:34:16,895 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 272 flow [2024-11-17 07:34:16,896 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 07:34:16,896 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:16,896 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:16,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 07:34:16,896 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 07:34:16,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:16,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1897913037, now seen corresponding path program 1 times [2024-11-17 07:34:16,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:16,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159514989] [2024-11-17 07:34:16,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:16,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:16,955 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 07:34:16,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:16,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159514989] [2024-11-17 07:34:16,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159514989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:16,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087948252] [2024-11-17 07:34:16,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:16,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:16,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:16,958 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 07:34:16,960 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 07:34:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:17,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:34:17,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:17,087 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 07:34:17,089 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:34:17,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087948252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:17,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:34:17,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-17 07:34:17,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484239185] [2024-11-17 07:34:17,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:17,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:34:17,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:17,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:34:17,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-17 07:34:17,102 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-17 07:34:17,103 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 07:34:17,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:17,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-17 07:34:17,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:17,502 INFO L124 PetriNetUnfolderBase]: 2052/4006 cut-off events. [2024-11-17 07:34:17,502 INFO L125 PetriNetUnfolderBase]: For 4463/4761 co-relation queries the response was YES. [2024-11-17 07:34:17,514 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 07:34:17,531 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 64 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2024-11-17 07:34:17,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 80 transitions, 559 flow [2024-11-17 07:34:17,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:34:17,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:34:17,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-11-17 07:34:17,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5855263157894737 [2024-11-17 07:34:17,534 INFO L175 Difference]: Start difference. First operand has 66 places, 50 transitions, 272 flow. Second operand 4 states and 89 transitions. [2024-11-17 07:34:17,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 80 transitions, 559 flow [2024-11-17 07:34:17,541 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 07:34:17,543 INFO L231 Difference]: Finished difference. Result has 67 places, 49 transitions, 279 flow [2024-11-17 07:34:17,543 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 07:34:17,544 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 28 predicate places. [2024-11-17 07:34:17,544 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 49 transitions, 279 flow [2024-11-17 07:34:17,544 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 07:34:17,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:17,544 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-17 07:34:17,561 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 07:34:17,745 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 07:34:17,746 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 07:34:17,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:17,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1294237833, now seen corresponding path program 1 times [2024-11-17 07:34:17,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:17,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820052159] [2024-11-17 07:34:17,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:17,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:17,780 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 07:34:17,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:17,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820052159] [2024-11-17 07:34:17,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820052159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:17,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:17,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:34:17,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511448662] [2024-11-17 07:34:17,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:17,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:34:17,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:17,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:34:17,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:34:17,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-17 07:34:17,796 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 07:34:17,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:17,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-17 07:34:17,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:18,157 INFO L124 PetriNetUnfolderBase]: 1777/3615 cut-off events. [2024-11-17 07:34:18,158 INFO L125 PetriNetUnfolderBase]: For 4768/5006 co-relation queries the response was YES. [2024-11-17 07:34:18,166 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 07:34:18,181 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 64 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2024-11-17 07:34:18,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 80 transitions, 568 flow [2024-11-17 07:34:18,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:34:18,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:34:18,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-11-17 07:34:18,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5855263157894737 [2024-11-17 07:34:18,182 INFO L175 Difference]: Start difference. First operand has 67 places, 49 transitions, 279 flow. Second operand 4 states and 89 transitions. [2024-11-17 07:34:18,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 80 transitions, 568 flow [2024-11-17 07:34:18,189 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 07:34:18,190 INFO L231 Difference]: Finished difference. Result has 67 places, 49 transitions, 283 flow [2024-11-17 07:34:18,191 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 07:34:18,191 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 28 predicate places. [2024-11-17 07:34:18,191 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 49 transitions, 283 flow [2024-11-17 07:34:18,191 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 07:34:18,192 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:18,192 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:18,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 07:34:18,192 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 07:34:18,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:18,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1410925633, now seen corresponding path program 1 times [2024-11-17 07:34:18,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:18,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439146045] [2024-11-17 07:34:18,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:18,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:18,244 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 07:34:18,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:18,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439146045] [2024-11-17 07:34:18,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439146045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:18,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340653803] [2024-11-17 07:34:18,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:18,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:18,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:18,247 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 07:34:18,250 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 07:34:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:18,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:34:18,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:18,345 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 07:34:18,346 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:34:18,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340653803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:18,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:34:18,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-17 07:34:18,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222334278] [2024-11-17 07:34:18,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:18,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:34:18,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:18,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:34:18,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:34:18,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-17 07:34:18,361 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 07:34:18,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:18,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-17 07:34:18,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:18,815 INFO L124 PetriNetUnfolderBase]: 1713/3474 cut-off events. [2024-11-17 07:34:18,815 INFO L125 PetriNetUnfolderBase]: For 6067/6174 co-relation queries the response was YES. [2024-11-17 07:34:18,823 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 07:34:18,834 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 82 selfloop transitions, 6 changer transitions 1/99 dead transitions. [2024-11-17 07:34:18,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 99 transitions, 728 flow [2024-11-17 07:34:18,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:34:18,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:34:18,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-11-17 07:34:18,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-17 07:34:18,836 INFO L175 Difference]: Start difference. First operand has 67 places, 49 transitions, 283 flow. Second operand 6 states and 133 transitions. [2024-11-17 07:34:18,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 99 transitions, 728 flow [2024-11-17 07:34:18,843 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 07:34:18,844 INFO L231 Difference]: Finished difference. Result has 69 places, 48 transitions, 283 flow [2024-11-17 07:34:18,845 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 07:34:18,845 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 30 predicate places. [2024-11-17 07:34:18,845 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 48 transitions, 283 flow [2024-11-17 07:34:18,846 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 07:34:18,846 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:18,846 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:18,864 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 07:34:19,046 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 07:34:19,047 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 07:34:19,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:19,048 INFO L85 PathProgramCache]: Analyzing trace with hash 789021841, now seen corresponding path program 1 times [2024-11-17 07:34:19,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:19,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158740721] [2024-11-17 07:34:19,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:19,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:19,087 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 07:34:19,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:19,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158740721] [2024-11-17 07:34:19,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158740721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:19,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:34:19,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:34:19,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245712646] [2024-11-17 07:34:19,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:19,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:34:19,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:19,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:34:19,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:34:19,099 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-17 07:34:19,100 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 07:34:19,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:19,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-17 07:34:19,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:19,415 INFO L124 PetriNetUnfolderBase]: 1767/3455 cut-off events. [2024-11-17 07:34:19,416 INFO L125 PetriNetUnfolderBase]: For 5436/5533 co-relation queries the response was YES. [2024-11-17 07:34:19,424 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 07:34:19,434 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 60 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2024-11-17 07:34:19,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 75 transitions, 558 flow [2024-11-17 07:34:19,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:34:19,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:34:19,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-11-17 07:34:19,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5592105263157895 [2024-11-17 07:34:19,436 INFO L175 Difference]: Start difference. First operand has 69 places, 48 transitions, 283 flow. Second operand 4 states and 85 transitions. [2024-11-17 07:34:19,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 75 transitions, 558 flow [2024-11-17 07:34:19,445 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 07:34:19,447 INFO L231 Difference]: Finished difference. Result has 68 places, 48 transitions, 289 flow [2024-11-17 07:34:19,447 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 07:34:19,447 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 29 predicate places. [2024-11-17 07:34:19,448 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 48 transitions, 289 flow [2024-11-17 07:34:19,448 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 07:34:19,448 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:19,448 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:19,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-17 07:34:19,448 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 07:34:19,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:19,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1099637651, now seen corresponding path program 1 times [2024-11-17 07:34:19,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:19,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414998565] [2024-11-17 07:34:19,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:19,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:19,500 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 07:34:19,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:19,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414998565] [2024-11-17 07:34:19,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414998565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:19,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463110222] [2024-11-17 07:34:19,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:19,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:19,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:19,503 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 07:34:19,504 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 07:34:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:19,559 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:34:19,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:19,601 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 07:34:19,601 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:34:19,647 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 07:34:19,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463110222] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:34:19,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:34:19,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-17 07:34:19,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127359682] [2024-11-17 07:34:19,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:34:19,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 07:34:19,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:19,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 07:34:19,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:34:19,650 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 07:34:19,650 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 07:34:19,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:19,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 07:34:19,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:20,037 INFO L124 PetriNetUnfolderBase]: 1339/3189 cut-off events. [2024-11-17 07:34:20,037 INFO L125 PetriNetUnfolderBase]: For 6918/6960 co-relation queries the response was YES. [2024-11-17 07:34:20,047 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 07:34:20,056 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 69 selfloop transitions, 12 changer transitions 8/103 dead transitions. [2024-11-17 07:34:20,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 103 transitions, 700 flow [2024-11-17 07:34:20,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:34:20,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:34:20,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-11-17 07:34:20,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6992481203007519 [2024-11-17 07:34:20,058 INFO L175 Difference]: Start difference. First operand has 68 places, 48 transitions, 289 flow. Second operand 7 states and 186 transitions. [2024-11-17 07:34:20,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 103 transitions, 700 flow [2024-11-17 07:34:20,067 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 07:34:20,069 INFO L231 Difference]: Finished difference. Result has 77 places, 54 transitions, 397 flow [2024-11-17 07:34:20,069 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 07:34:20,070 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 38 predicate places. [2024-11-17 07:34:20,070 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 397 flow [2024-11-17 07:34:20,070 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 07:34:20,070 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:20,070 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 07:34:20,088 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 07:34:20,271 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 07:34:20,271 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 07:34:20,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:20,272 INFO L85 PathProgramCache]: Analyzing trace with hash 273379351, now seen corresponding path program 1 times [2024-11-17 07:34:20,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:20,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189704089] [2024-11-17 07:34:20,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:20,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:20,341 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 07:34:20,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:20,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189704089] [2024-11-17 07:34:20,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189704089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:20,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188547471] [2024-11-17 07:34:20,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:20,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:20,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:20,344 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 07:34:20,346 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 07:34:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:20,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:34:20,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:20,451 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 07:34:20,451 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:34:20,534 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 07:34:20,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188547471] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:34:20,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:34:20,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-17 07:34:20,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462538749] [2024-11-17 07:34:20,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:34:20,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:34:20,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:20,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:34:20,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:34:20,538 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 07:34:20,538 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 07:34:20,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:20,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 07:34:20,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:21,113 INFO L124 PetriNetUnfolderBase]: 1744/4323 cut-off events. [2024-11-17 07:34:21,114 INFO L125 PetriNetUnfolderBase]: For 12796/12831 co-relation queries the response was YES. [2024-11-17 07:34:21,130 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 07:34:21,142 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 100 selfloop transitions, 17 changer transitions 17/148 dead transitions. [2024-11-17 07:34:21,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 148 transitions, 1043 flow [2024-11-17 07:34:21,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 07:34:21,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-17 07:34:21,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 316 transitions. [2024-11-17 07:34:21,145 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6929824561403509 [2024-11-17 07:34:21,145 INFO L175 Difference]: Start difference. First operand has 77 places, 54 transitions, 397 flow. Second operand 12 states and 316 transitions. [2024-11-17 07:34:21,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 148 transitions, 1043 flow [2024-11-17 07:34:21,164 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 07:34:21,168 INFO L231 Difference]: Finished difference. Result has 92 places, 56 transitions, 443 flow [2024-11-17 07:34:21,169 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 07:34:21,169 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 53 predicate places. [2024-11-17 07:34:21,169 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 56 transitions, 443 flow [2024-11-17 07:34:21,169 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 07:34:21,169 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:21,170 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 07:34:21,186 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 07:34:21,370 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 07:34:21,370 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 07:34:21,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:21,371 INFO L85 PathProgramCache]: Analyzing trace with hash -2013372279, now seen corresponding path program 1 times [2024-11-17 07:34:21,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:21,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381429199] [2024-11-17 07:34:21,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:21,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:21,527 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 07:34:21,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:21,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381429199] [2024-11-17 07:34:21,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381429199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:21,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447753606] [2024-11-17 07:34:21,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:21,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:21,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:21,532 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 07:34:21,534 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 07:34:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:21,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 07:34:21,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:21,666 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 07:34:21,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:34:21,799 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 07:34:21,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447753606] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:34:21,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:34:21,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-17 07:34:21,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132966077] [2024-11-17 07:34:21,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:34:21,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-17 07:34:21,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:21,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-17 07:34:21,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-17 07:34:21,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 07:34:21,803 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 07:34:21,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:21,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 07:34:21,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:22,829 INFO L124 PetriNetUnfolderBase]: 2554/6279 cut-off events. [2024-11-17 07:34:22,830 INFO L125 PetriNetUnfolderBase]: For 19680/19722 co-relation queries the response was YES. [2024-11-17 07:34:22,848 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 07:34:22,862 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 120 selfloop transitions, 24 changer transitions 25/183 dead transitions. [2024-11-17 07:34:22,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 183 transitions, 1320 flow [2024-11-17 07:34:22,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-17 07:34:22,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-17 07:34:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 394 transitions. [2024-11-17 07:34:22,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6912280701754386 [2024-11-17 07:34:22,865 INFO L175 Difference]: Start difference. First operand has 92 places, 56 transitions, 443 flow. Second operand 15 states and 394 transitions. [2024-11-17 07:34:22,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 183 transitions, 1320 flow [2024-11-17 07:34:22,889 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 07:34:22,891 INFO L231 Difference]: Finished difference. Result has 110 places, 64 transitions, 594 flow [2024-11-17 07:34:22,891 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 07:34:22,892 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 71 predicate places. [2024-11-17 07:34:22,892 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 64 transitions, 594 flow [2024-11-17 07:34:22,892 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 07:34:22,892 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:22,893 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 07:34:22,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 07:34:23,093 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 07:34:23,094 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 07:34:23,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:23,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1968246019, now seen corresponding path program 2 times [2024-11-17 07:34:23,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:23,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821311256] [2024-11-17 07:34:23,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:23,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:23,378 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 07:34:23,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:23,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821311256] [2024-11-17 07:34:23,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821311256] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:23,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964085109] [2024-11-17 07:34:23,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:34:23,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:23,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:23,381 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 07:34:23,383 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 07:34:23,453 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:34:23,453 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:34:23,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 07:34:23,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:23,567 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 07:34:23,567 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:34:23,849 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 07:34:23,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964085109] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:34:23,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:34:23,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2024-11-17 07:34:23,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890679005] [2024-11-17 07:34:23,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:34:23,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-17 07:34:23,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:23,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-17 07:34:23,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2024-11-17 07:34:23,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-11-17 07:34:23,853 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 07:34:23,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:23,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-11-17 07:34:23,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:25,600 INFO L124 PetriNetUnfolderBase]: 4336/10755 cut-off events. [2024-11-17 07:34:25,601 INFO L125 PetriNetUnfolderBase]: For 48909/48944 co-relation queries the response was YES. [2024-11-17 07:34:25,633 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 07:34:25,658 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 212 selfloop transitions, 41 changer transitions 49/316 dead transitions. [2024-11-17 07:34:25,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 316 transitions, 2298 flow [2024-11-17 07:34:25,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-17 07:34:25,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-17 07:34:25,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 737 transitions. [2024-11-17 07:34:25,662 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6926691729323309 [2024-11-17 07:34:25,662 INFO L175 Difference]: Start difference. First operand has 110 places, 64 transitions, 594 flow. Second operand 28 states and 737 transitions. [2024-11-17 07:34:25,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 316 transitions, 2298 flow [2024-11-17 07:34:25,722 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 07:34:25,725 INFO L231 Difference]: Finished difference. Result has 144 places, 80 transitions, 856 flow [2024-11-17 07:34:25,725 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 07:34:25,726 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 105 predicate places. [2024-11-17 07:34:25,726 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 80 transitions, 856 flow [2024-11-17 07:34:25,726 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 07:34:25,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:34:25,727 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 07:34:25,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 07:34:25,927 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 07:34:25,928 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 07:34:25,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:34:25,928 INFO L85 PathProgramCache]: Analyzing trace with hash 606573191, now seen corresponding path program 2 times [2024-11-17 07:34:25,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:34:25,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481330187] [2024-11-17 07:34:25,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:34:25,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:34:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:34:26,624 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 07:34:26,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:34:26,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481330187] [2024-11-17 07:34:26,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481330187] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:34:26,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924786348] [2024-11-17 07:34:26,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:34:26,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:34:26,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:34:26,628 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 07:34:26,629 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 07:34:26,724 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 07:34:26,725 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:34:26,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-17 07:34:26,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:34:27,284 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 658 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 07:34:27,284 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:34:27,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924786348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:34:27,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:34:27,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 46 [2024-11-17 07:34:27,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686721636] [2024-11-17 07:34:27,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:34:27,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-17 07:34:27,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:34:27,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-17 07:34:27,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=1760, Unknown=0, NotChecked=0, Total=2070 [2024-11-17 07:34:27,324 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-17 07:34:27,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 80 transitions, 856 flow. Second operand has 23 states, 23 states have (on average 14.173913043478262) internal successors, (326), 23 states have internal predecessors, (326), 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 07:34:27,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:34:27,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-17 07:34:27,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:34:35,678 INFO L124 PetriNetUnfolderBase]: 27984/53802 cut-off events. [2024-11-17 07:34:35,678 INFO L125 PetriNetUnfolderBase]: For 128444/128464 co-relation queries the response was YES. [2024-11-17 07:34:36,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163205 conditions, 53802 events. 27984/53802 cut-off events. For 128444/128464 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 471430 event pairs, 595 based on Foata normal form. 617/54391 useless extension candidates. Maximal degree in co-relation 163154. Up to 6831 conditions per place. [2024-11-17 07:34:36,078 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 0 selfloop transitions, 0 changer transitions 637/637 dead transitions. [2024-11-17 07:34:36,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 637 transitions, 7020 flow [2024-11-17 07:34:36,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-17 07:34:36,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-17 07:34:36,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 528 transitions. [2024-11-17 07:34:36,082 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041189931350115 [2024-11-17 07:34:36,083 INFO L175 Difference]: Start difference. First operand has 144 places, 80 transitions, 856 flow. Second operand 23 states and 528 transitions. [2024-11-17 07:34:36,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 637 transitions, 7020 flow [2024-11-17 07:34:36,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 637 transitions, 5189 flow, removed 22 selfloop flow, removed 48 redundant places. [2024-11-17 07:34:36,618 INFO L231 Difference]: Finished difference. Result has 113 places, 0 transitions, 0 flow [2024-11-17 07:34:36,618 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=113, PETRI_TRANSITIONS=0} [2024-11-17 07:34:36,619 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 74 predicate places. [2024-11-17 07:34:36,619 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 0 transitions, 0 flow [2024-11-17 07:34:36,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 14.173913043478262) internal successors, (326), 23 states have internal predecessors, (326), 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 07:34:36,622 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-11-17 07:34:36,623 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2024-11-17 07:34:36,623 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2024-11-17 07:34:36,623 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2024-11-17 07:34:36,623 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2024-11-17 07:34:36,623 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2024-11-17 07:34:36,623 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2024-11-17 07:34:36,623 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2024-11-17 07:34:36,623 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2024-11-17 07:34:36,623 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2024-11-17 07:34:36,624 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2024-11-17 07:34:36,624 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2024-11-17 07:34:36,624 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2024-11-17 07:34:36,624 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2024-11-17 07:34:36,624 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2024-11-17 07:34:36,624 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2024-11-17 07:34:36,624 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2024-11-17 07:34:36,624 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2024-11-17 07:34:36,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-17 07:34:36,825 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 07:34:36,825 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:34:36,834 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-17 07:34:36,834 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-17 07:34:36,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 07:34:36 BasicIcfg [2024-11-17 07:34:36,840 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-17 07:34:36,841 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-17 07:34:36,841 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-17 07:34:36,841 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-17 07:34:36,841 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:34:12" (3/4) ... [2024-11-17 07:34:36,843 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-17 07:34:36,846 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure t1 [2024-11-17 07:34:36,846 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure t2 [2024-11-17 07:34:36,849 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2024-11-17 07:34:36,849 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-17 07:34:36,850 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-17 07:34:36,850 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-17 07:34:36,850 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-17 07:34:36,931 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-17 07:34:36,932 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-17 07:34:36,932 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-17 07:34:36,933 INFO L158 Benchmark]: Toolchain (without parser) took 25139.84ms. Allocated memory was 146.8MB in the beginning and 6.8GB in the end (delta: 6.7GB). Free memory was 90.5MB in the beginning and 5.9GB in the end (delta: -5.8GB). Peak memory consumption was 910.3MB. Max. memory is 16.1GB. [2024-11-17 07:34:36,933 INFO L158 Benchmark]: CDTParser took 0.84ms. Allocated memory is still 146.8MB. Free memory is still 111.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 07:34:36,933 INFO L158 Benchmark]: CACSL2BoogieTranslator took 486.14ms. Allocated memory is still 146.8MB. Free memory was 90.5MB in the beginning and 68.0MB in the end (delta: 22.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-17 07:34:36,933 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.87ms. Allocated memory is still 146.8MB. Free memory was 68.0MB in the beginning and 65.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 07:34:36,934 INFO L158 Benchmark]: Boogie Preprocessor took 47.11ms. Allocated memory is still 146.8MB. Free memory was 65.9MB in the beginning and 64.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 07:34:36,934 INFO L158 Benchmark]: IcfgBuilder took 472.92ms. Allocated memory is still 146.8MB. Free memory was 64.3MB in the beginning and 43.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-17 07:34:36,934 INFO L158 Benchmark]: TraceAbstraction took 23989.65ms. Allocated memory was 146.8MB in the beginning and 6.8GB in the end (delta: 6.7GB). Free memory was 42.8MB in the beginning and 5.9GB in the end (delta: -5.8GB). Peak memory consumption was 958.5MB. Max. memory is 16.1GB. [2024-11-17 07:34:36,935 INFO L158 Benchmark]: Witness Printer took 91.39ms. Allocated memory is still 6.8GB. Free memory was 5.9GB in the beginning and 5.9GB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-17 07:34:36,936 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.84ms. Allocated memory is still 146.8MB. Free memory is still 111.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 486.14ms. Allocated memory is still 146.8MB. Free memory was 90.5MB in the beginning and 68.0MB in the end (delta: 22.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.87ms. Allocated memory is still 146.8MB. Free memory was 68.0MB in the beginning and 65.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.11ms. Allocated memory is still 146.8MB. Free memory was 65.9MB in the beginning and 64.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 472.92ms. Allocated memory is still 146.8MB. Free memory was 64.3MB in the beginning and 43.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 23989.65ms. Allocated memory was 146.8MB in the beginning and 6.8GB in the end (delta: 6.7GB). Free memory was 42.8MB in the beginning and 5.9GB in the end (delta: -5.8GB). Peak memory consumption was 958.5MB. Max. memory is 16.1GB. * Witness Printer took 91.39ms. Allocated memory is still 6.8GB. Free memory was 5.9GB in the beginning and 5.9GB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 704]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 63 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 23.8s, OverallIterations: 19, TraceHistogramMax: 12, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 17.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2180 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2151 mSDsluCounter, 68 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 50 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3059 IncrementalHoareTripleChecker+Invalid, 3128 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 18 mSDtfsCounter, 3059 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 662 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1481 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=856occurred in iteration=18, InterpolantAutomatonStates: 141, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 798 NumberOfCodeBlocks, 798 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 936 ConstructedInterpolants, 0 QuantifiedInterpolants, 2704 SizeOfPredicates, 37 NumberOfNonLiveVariables, 1053 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 30 InterpolantComputations, 15 PerfectInterpolantSequences, 685/2078 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-17 07:34:36,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE