./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.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 f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 13:49:17,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 13:49:17,882 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 13:49:17,889 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 13:49:17,890 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 13:49:17,911 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 13:49:17,911 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 13:49:17,911 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 13:49:17,912 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 13:49:17,912 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 13:49:17,912 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 13:49:17,913 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 13:49:17,913 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 13:49:17,913 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 13:49:17,914 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 13:49:17,914 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 13:49:17,914 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 13:49:17,915 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 13:49:17,915 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 13:49:17,915 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 13:49:17,915 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 13:49:17,916 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 13:49:17,916 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 13:49:17,917 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 13:49:17,917 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 13:49:17,917 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 13:49:17,917 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 13:49:17,918 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 13:49:17,918 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 13:49:17,918 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 13:49:17,918 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 13:49:17,919 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 13:49:17,919 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 13:49:17,919 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 13:49:17,919 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:49:17,919 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 13:49:17,920 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 13:49:17,920 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 13:49:17,920 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 13:49:17,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 13:49:17,920 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 13:49:17,921 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 13:49:17,921 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 13:49:17,921 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 13:49:17,921 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 [2024-11-19 13:49:18,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 13:49:18,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 13:49:18,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 13:49:18,164 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 13:49:18,164 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 13:49:18,165 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2024-11-19 13:49:19,526 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 13:49:19,702 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 13:49:19,703 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2024-11-19 13:49:19,714 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4042b263/616cebeb60214b0490a3806cce20130a/FLAG79dfd8e22 [2024-11-19 13:49:19,736 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4042b263/616cebeb60214b0490a3806cce20130a [2024-11-19 13:49:19,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 13:49:19,739 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 13:49:19,741 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 13:49:19,741 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 13:49:19,745 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 13:49:19,746 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:49:19" (1/1) ... [2024-11-19 13:49:19,747 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42e93e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:19, skipping insertion in model container [2024-11-19 13:49:19,747 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:49:19" (1/1) ... [2024-11-19 13:49:19,776 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 13:49:20,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:49:20,071 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 13:49:20,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:49:20,157 INFO L204 MainTranslator]: Completed translation [2024-11-19 13:49:20,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:20 WrapperNode [2024-11-19 13:49:20,157 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 13:49:20,158 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 13:49:20,158 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 13:49:20,158 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 13:49:20,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:20" (1/1) ... [2024-11-19 13:49:20,182 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:20" (1/1) ... [2024-11-19 13:49:20,205 INFO L138 Inliner]: procedures = 166, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2024-11-19 13:49:20,206 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 13:49:20,207 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 13:49:20,207 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 13:49:20,207 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 13:49:20,214 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:20" (1/1) ... [2024-11-19 13:49:20,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:20" (1/1) ... [2024-11-19 13:49:20,217 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:20" (1/1) ... [2024-11-19 13:49:20,231 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 13:49:20,233 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:20" (1/1) ... [2024-11-19 13:49:20,233 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:20" (1/1) ... [2024-11-19 13:49:20,235 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:20" (1/1) ... [2024-11-19 13:49:20,241 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:20" (1/1) ... [2024-11-19 13:49:20,242 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:20" (1/1) ... [2024-11-19 13:49:20,242 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:20" (1/1) ... [2024-11-19 13:49:20,244 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 13:49:20,248 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 13:49:20,249 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 13:49:20,249 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 13:49:20,249 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:20" (1/1) ... [2024-11-19 13:49:20,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:49:20,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:49:20,284 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 13:49:20,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 13:49:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-19 13:49:20,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-19 13:49:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 13:49:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 13:49:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 13:49:20,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 13:49:20,328 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 13:49:20,438 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 13:49:20,440 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 13:49:20,570 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 13:49:20,571 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 13:49:20,622 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 13:49:20,622 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 13:49:20,623 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:49:20 BoogieIcfgContainer [2024-11-19 13:49:20,623 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 13:49:20,624 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 13:49:20,625 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 13:49:20,627 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 13:49:20,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:49:19" (1/3) ... [2024-11-19 13:49:20,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652875df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:49:20, skipping insertion in model container [2024-11-19 13:49:20,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:20" (2/3) ... [2024-11-19 13:49:20,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652875df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:49:20, skipping insertion in model container [2024-11-19 13:49:20,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:49:20" (3/3) ... [2024-11-19 13:49:20,632 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2024-11-19 13:49:20,645 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 13:49:20,646 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-19 13:49:20,646 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 13:49:20,701 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 13:49:20,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 35 transitions, 74 flow [2024-11-19 13:49:20,762 INFO L124 PetriNetUnfolderBase]: 5/37 cut-off events. [2024-11-19 13:49:20,763 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:49:20,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 37 events. 5/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 76 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2024-11-19 13:49:20,765 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 35 transitions, 74 flow [2024-11-19 13:49:20,768 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 35 transitions, 74 flow [2024-11-19 13:49:20,776 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:49:20,781 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;@76ae44a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:49:20,783 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-19 13:49:20,787 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:49:20,789 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-19 13:49:20,790 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:49:20,790 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:49:20,791 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 13:49:20,791 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 13:49:20,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:49:20,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1700405344, now seen corresponding path program 1 times [2024-11-19 13:49:20,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:49:20,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109908318] [2024-11-19 13:49:20,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:49:20,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:49:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:49:20,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:49:20,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:49:20,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109908318] [2024-11-19 13:49:20,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109908318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:49:20,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:49:20,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:49:20,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910369478] [2024-11-19 13:49:20,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:49:20,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:49:20,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:49:21,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:49:21,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:49:21,024 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2024-11-19 13:49:21,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 35 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:49:21,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:49:21,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2024-11-19 13:49:21,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:49:21,129 INFO L124 PetriNetUnfolderBase]: 57/201 cut-off events. [2024-11-19 13:49:21,131 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:49:21,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 201 events. 57/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 880 event pairs, 20 based on Foata normal form. 9/174 useless extension candidates. Maximal degree in co-relation 300. Up to 65 conditions per place. [2024-11-19 13:49:21,136 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 27 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2024-11-19 13:49:21,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 45 transitions, 152 flow [2024-11-19 13:49:21,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:49:21,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:49:21,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-11-19 13:49:21,148 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7904761904761904 [2024-11-19 13:49:21,149 INFO L175 Difference]: Start difference. First operand has 33 places, 35 transitions, 74 flow. Second operand 3 states and 83 transitions. [2024-11-19 13:49:21,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 45 transitions, 152 flow [2024-11-19 13:49:21,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 152 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 13:49:21,154 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 84 flow [2024-11-19 13:49:21,156 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2024-11-19 13:49:21,159 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2024-11-19 13:49:21,160 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 84 flow [2024-11-19 13:49:21,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:49:21,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:49:21,160 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 13:49:21,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 13:49:21,161 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-19 13:49:21,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:49:21,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1700430800, now seen corresponding path program 1 times [2024-11-19 13:49:21,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:49:21,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090112649] [2024-11-19 13:49:21,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:49:21,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:49:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:49:21,187 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 13:49:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:49:21,227 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 13:49:21,228 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 13:49:21,230 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-19 13:49:21,231 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-19 13:49:21,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-19 13:49:21,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-19 13:49:21,233 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-19 13:49:21,233 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-19 13:49:21,234 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-19 13:49:21,234 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-19 13:49:21,234 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-11-19 13:49:21,235 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-11-19 13:49:21,235 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-11-19 13:49:21,235 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-19 13:49:21,235 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-19 13:49:21,235 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-19 13:49:21,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-19 13:49:21,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-19 13:49:21,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-19 13:49:21,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 13:49:21,238 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-19 13:49:21,240 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 13:49:21,241 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-19 13:49:21,331 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 13:49:21,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 65 transitions, 140 flow [2024-11-19 13:49:21,374 INFO L124 PetriNetUnfolderBase]: 10/70 cut-off events. [2024-11-19 13:49:21,374 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 13:49:21,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 70 events. 10/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 224 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 61. Up to 3 conditions per place. [2024-11-19 13:49:21,375 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 65 transitions, 140 flow [2024-11-19 13:49:21,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 65 transitions, 140 flow [2024-11-19 13:49:21,377 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:49:21,378 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;@76ae44a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:49:21,378 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-19 13:49:21,384 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:49:21,384 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-19 13:49:21,385 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 13:49:21,385 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:49:21,385 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 13:49:21,385 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-19 13:49:21,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:49:21,385 INFO L85 PathProgramCache]: Analyzing trace with hash 223412032, now seen corresponding path program 1 times [2024-11-19 13:49:21,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:49:21,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110558886] [2024-11-19 13:49:21,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:49:21,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:49:21,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:49:21,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:49:21,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:49:21,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110558886] [2024-11-19 13:49:21,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110558886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:49:21,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:49:21,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:49:21,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593584224] [2024-11-19 13:49:21,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:49:21,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:49:21,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:49:21,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:49:21,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:49:21,458 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 65 [2024-11-19 13:49:21,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 65 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:49:21,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:49:21,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 65 [2024-11-19 13:49:21,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:49:21,821 INFO L124 PetriNetUnfolderBase]: 1201/2849 cut-off events. [2024-11-19 13:49:21,822 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-11-19 13:49:21,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4631 conditions, 2849 events. 1201/2849 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 22110 event pairs, 520 based on Foata normal form. 174/2526 useless extension candidates. Maximal degree in co-relation 3450. Up to 988 conditions per place. [2024-11-19 13:49:21,844 INFO L140 encePairwiseOnDemand]: 58/65 looper letters, 51 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2024-11-19 13:49:21,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 86 transitions, 293 flow [2024-11-19 13:49:21,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:49:21,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:49:21,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2024-11-19 13:49:21,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8205128205128205 [2024-11-19 13:49:21,847 INFO L175 Difference]: Start difference. First operand has 60 places, 65 transitions, 140 flow. Second operand 3 states and 160 transitions. [2024-11-19 13:49:21,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 86 transitions, 293 flow [2024-11-19 13:49:21,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 86 transitions, 293 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 13:49:21,849 INFO L231 Difference]: Finished difference. Result has 62 places, 63 transitions, 148 flow [2024-11-19 13:49:21,849 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=62, PETRI_TRANSITIONS=63} [2024-11-19 13:49:21,850 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 2 predicate places. [2024-11-19 13:49:21,850 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 63 transitions, 148 flow [2024-11-19 13:49:21,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:49:21,852 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:49:21,852 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-19 13:49:21,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 13:49:21,852 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-11-19 13:49:21,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:49:21,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1148426867, now seen corresponding path program 1 times [2024-11-19 13:49:21,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:49:21,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932299869] [2024-11-19 13:49:21,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:49:21,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:49:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:49:21,866 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 13:49:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:49:21,879 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 13:49:21,879 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 13:49:21,879 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2024-11-19 13:49:21,879 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2024-11-19 13:49:21,879 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2024-11-19 13:49:21,879 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2024-11-19 13:49:21,879 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2024-11-19 13:49:21,880 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2024-11-19 13:49:21,880 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2024-11-19 13:49:21,880 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2024-11-19 13:49:21,880 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2024-11-19 13:49:21,880 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2024-11-19 13:49:21,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2024-11-19 13:49:21,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2024-11-19 13:49:21,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2024-11-19 13:49:21,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2024-11-19 13:49:21,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2024-11-19 13:49:21,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2024-11-19 13:49:21,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2024-11-19 13:49:21,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2024-11-19 13:49:21,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2024-11-19 13:49:21,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2024-11-19 13:49:21,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2024-11-19 13:49:21,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2024-11-19 13:49:21,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2024-11-19 13:49:21,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2024-11-19 13:49:21,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2024-11-19 13:49:21,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 13:49:21,884 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-19 13:49:21,884 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 13:49:21,884 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-19 13:49:21,926 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 13:49:21,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 95 transitions, 208 flow [2024-11-19 13:49:21,939 INFO L124 PetriNetUnfolderBase]: 15/103 cut-off events. [2024-11-19 13:49:21,939 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-19 13:49:21,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 103 events. 15/103 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 393 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2024-11-19 13:49:21,940 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 95 transitions, 208 flow [2024-11-19 13:49:21,941 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 95 transitions, 208 flow [2024-11-19 13:49:21,942 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:49:21,943 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;@76ae44a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:49:21,943 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-11-19 13:49:21,944 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:49:21,944 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-19 13:49:21,944 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 13:49:21,944 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:49:21,945 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 13:49:21,945 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-19 13:49:21,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:49:21,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1260263005, now seen corresponding path program 1 times [2024-11-19 13:49:21,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:49:21,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799785525] [2024-11-19 13:49:21,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:49:21,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:49:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:49:21,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:49:21,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:49:21,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799785525] [2024-11-19 13:49:21,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799785525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:49:21,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:49:21,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:49:21,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210625455] [2024-11-19 13:49:21,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:49:21,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:49:21,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:49:21,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:49:21,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:49:22,023 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 95 [2024-11-19 13:49:22,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 95 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:49:22,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:49:22,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 95 [2024-11-19 13:49:22,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:49:24,103 INFO L124 PetriNetUnfolderBase]: 17164/33006 cut-off events. [2024-11-19 13:49:24,104 INFO L125 PetriNetUnfolderBase]: For 1133/1133 co-relation queries the response was YES. [2024-11-19 13:49:24,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55597 conditions, 33006 events. 17164/33006 cut-off events. For 1133/1133 co-relation queries the response was YES. Maximal size of possible extension queue 1468. Compared 325695 event pairs, 6856 based on Foata normal form. 2572/30093 useless extension candidates. Maximal degree in co-relation 13335. Up to 12562 conditions per place. [2024-11-19 13:49:24,333 INFO L140 encePairwiseOnDemand]: 87/95 looper letters, 75 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2024-11-19 13:49:24,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 127 transitions, 438 flow [2024-11-19 13:49:24,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:49:24,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:49:24,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2024-11-19 13:49:24,336 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8315789473684211 [2024-11-19 13:49:24,336 INFO L175 Difference]: Start difference. First operand has 87 places, 95 transitions, 208 flow. Second operand 3 states and 237 transitions. [2024-11-19 13:49:24,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 127 transitions, 438 flow [2024-11-19 13:49:24,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 127 transitions, 434 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-19 13:49:24,343 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 212 flow [2024-11-19 13:49:24,343 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=89, PETRI_TRANSITIONS=92} [2024-11-19 13:49:24,344 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 2 predicate places. [2024-11-19 13:49:24,345 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 212 flow [2024-11-19 13:49:24,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:49:24,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:49:24,346 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:49:24,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 13:49:24,346 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-19 13:49:24,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:49:24,347 INFO L85 PathProgramCache]: Analyzing trace with hash 494884031, now seen corresponding path program 1 times [2024-11-19 13:49:24,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:49:24,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204836346] [2024-11-19 13:49:24,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:49:24,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:49:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:49:24,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 13:49:24,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:49:24,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204836346] [2024-11-19 13:49:24,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204836346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:49:24,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:49:24,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:49:24,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987136521] [2024-11-19 13:49:24,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:49:24,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:49:24,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:49:24,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:49:24,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:49:24,410 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 95 [2024-11-19 13:49:24,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:49:24,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:49:24,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 95 [2024-11-19 13:49:24,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:49:27,671 INFO L124 PetriNetUnfolderBase]: 32455/60993 cut-off events. [2024-11-19 13:49:27,672 INFO L125 PetriNetUnfolderBase]: For 4096/4096 co-relation queries the response was YES. [2024-11-19 13:49:27,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105609 conditions, 60993 events. 32455/60993 cut-off events. For 4096/4096 co-relation queries the response was YES. Maximal size of possible extension queue 2427. Compared 621297 event pairs, 14152 based on Foata normal form. 510/51685 useless extension candidates. Maximal degree in co-relation 81540. Up to 23776 conditions per place. [2024-11-19 13:49:28,033 INFO L140 encePairwiseOnDemand]: 91/95 looper letters, 76 selfloop transitions, 2 changer transitions 0/128 dead transitions. [2024-11-19 13:49:28,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 128 transitions, 453 flow [2024-11-19 13:49:28,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:49:28,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:49:28,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 228 transitions. [2024-11-19 13:49:28,035 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8 [2024-11-19 13:49:28,035 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 212 flow. Second operand 3 states and 228 transitions. [2024-11-19 13:49:28,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 128 transitions, 453 flow [2024-11-19 13:49:28,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 128 transitions, 449 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:49:28,042 INFO L231 Difference]: Finished difference. Result has 91 places, 93 transitions, 224 flow [2024-11-19 13:49:28,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=91, PETRI_TRANSITIONS=93} [2024-11-19 13:49:28,043 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 4 predicate places. [2024-11-19 13:49:28,043 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 93 transitions, 224 flow [2024-11-19 13:49:28,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:49:28,044 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:49:28,044 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:49:28,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 13:49:28,044 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-19 13:49:28,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:49:28,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2109356729, now seen corresponding path program 1 times [2024-11-19 13:49:28,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:49:28,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162616908] [2024-11-19 13:49:28,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:49:28,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:49:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:49:28,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:49:28,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:49:28,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162616908] [2024-11-19 13:49:28,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162616908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:49:28,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:49:28,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:49:28,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108339396] [2024-11-19 13:49:28,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:49:28,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:49:28,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:49:28,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:49:28,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:49:28,128 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2024-11-19 13:49:28,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 93 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:49:28,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:49:28,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2024-11-19 13:49:28,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:49:31,906 INFO L124 PetriNetUnfolderBase]: 35164/66214 cut-off events. [2024-11-19 13:49:31,906 INFO L125 PetriNetUnfolderBase]: For 6905/6905 co-relation queries the response was YES. [2024-11-19 13:49:32,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118208 conditions, 66214 events. 35164/66214 cut-off events. For 6905/6905 co-relation queries the response was YES. Maximal size of possible extension queue 2673. Compared 686661 event pairs, 17380 based on Foata normal form. 1026/57479 useless extension candidates. Maximal degree in co-relation 111927. Up to 27862 conditions per place. [2024-11-19 13:49:32,277 INFO L140 encePairwiseOnDemand]: 90/95 looper letters, 105 selfloop transitions, 3 changer transitions 0/156 dead transitions. [2024-11-19 13:49:32,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 156 transitions, 602 flow [2024-11-19 13:49:32,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:49:32,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:49:32,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 299 transitions. [2024-11-19 13:49:32,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7868421052631579 [2024-11-19 13:49:32,280 INFO L175 Difference]: Start difference. First operand has 91 places, 93 transitions, 224 flow. Second operand 4 states and 299 transitions. [2024-11-19 13:49:32,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 156 transitions, 602 flow [2024-11-19 13:49:32,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 156 transitions, 596 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:49:32,288 INFO L231 Difference]: Finished difference. Result has 95 places, 94 transitions, 240 flow [2024-11-19 13:49:32,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=95, PETRI_TRANSITIONS=94} [2024-11-19 13:49:32,289 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 8 predicate places. [2024-11-19 13:49:32,290 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 94 transitions, 240 flow [2024-11-19 13:49:32,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:49:32,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:49:32,294 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:49:32,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 13:49:32,294 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-19 13:49:32,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:49:32,295 INFO L85 PathProgramCache]: Analyzing trace with hash 965548588, now seen corresponding path program 1 times [2024-11-19 13:49:32,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:49:32,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268226806] [2024-11-19 13:49:32,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:49:32,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:49:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:49:32,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:49:32,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:49:32,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268226806] [2024-11-19 13:49:32,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268226806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:49:32,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:49:32,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 13:49:32,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168652903] [2024-11-19 13:49:32,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:49:32,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:49:32,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:49:32,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:49:32,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 13:49:32,393 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2024-11-19 13:49:32,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 94 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:49:32,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:49:32,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2024-11-19 13:49:32,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:49:37,186 INFO L124 PetriNetUnfolderBase]: 44518/76865 cut-off events. [2024-11-19 13:49:37,186 INFO L125 PetriNetUnfolderBase]: For 12994/12994 co-relation queries the response was YES. [2024-11-19 13:49:37,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146399 conditions, 76865 events. 44518/76865 cut-off events. For 12994/12994 co-relation queries the response was YES. Maximal size of possible extension queue 2679. Compared 728960 event pairs, 16360 based on Foata normal form. 513/68476 useless extension candidates. Maximal degree in co-relation 141138. Up to 25798 conditions per place. [2024-11-19 13:49:37,655 INFO L140 encePairwiseOnDemand]: 88/95 looper letters, 162 selfloop transitions, 6 changer transitions 0/216 dead transitions. [2024-11-19 13:49:37,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 216 transitions, 888 flow [2024-11-19 13:49:37,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 13:49:37,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 13:49:37,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 452 transitions. [2024-11-19 13:49:37,663 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7929824561403509 [2024-11-19 13:49:37,663 INFO L175 Difference]: Start difference. First operand has 95 places, 94 transitions, 240 flow. Second operand 6 states and 452 transitions. [2024-11-19 13:49:37,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 216 transitions, 888 flow [2024-11-19 13:49:37,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 216 transitions, 884 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:49:37,679 INFO L231 Difference]: Finished difference. Result has 102 places, 98 transitions, 277 flow [2024-11-19 13:49:37,679 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=277, PETRI_PLACES=102, PETRI_TRANSITIONS=98} [2024-11-19 13:49:37,680 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 15 predicate places. [2024-11-19 13:49:37,680 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 98 transitions, 277 flow [2024-11-19 13:49:37,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:49:37,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:49:37,680 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:49:37,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 13:49:37,681 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-19 13:49:37,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:49:37,681 INFO L85 PathProgramCache]: Analyzing trace with hash -132765411, now seen corresponding path program 1 times [2024-11-19 13:49:37,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:49:37,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569858361] [2024-11-19 13:49:37,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:49:37,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:49:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:49:37,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:49:37,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:49:37,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569858361] [2024-11-19 13:49:37,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569858361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:49:37,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:49:37,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 13:49:37,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877273918] [2024-11-19 13:49:37,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:49:37,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:49:37,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:49:37,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:49:37,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 13:49:37,779 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 95 [2024-11-19 13:49:37,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 98 transitions, 277 flow. Second operand has 6 states, 6 states have (on average 48.333333333333336) internal successors, (290), 6 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:49:37,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:49:37,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 95 [2024-11-19 13:49:37,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:49:44,867 INFO L124 PetriNetUnfolderBase]: 65236/108657 cut-off events. [2024-11-19 13:49:44,868 INFO L125 PetriNetUnfolderBase]: For 33927/33927 co-relation queries the response was YES. [2024-11-19 13:49:45,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226158 conditions, 108657 events. 65236/108657 cut-off events. For 33927/33927 co-relation queries the response was YES. Maximal size of possible extension queue 3873. Compared 1038250 event pairs, 21952 based on Foata normal form. 1026/98235 useless extension candidates. Maximal degree in co-relation 147692. Up to 39208 conditions per place. [2024-11-19 13:49:45,572 INFO L140 encePairwiseOnDemand]: 86/95 looper letters, 222 selfloop transitions, 12 changer transitions 0/282 dead transitions. [2024-11-19 13:49:45,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 282 transitions, 1249 flow [2024-11-19 13:49:45,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 13:49:45,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 13:49:45,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 606 transitions. [2024-11-19 13:49:45,574 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7973684210526316 [2024-11-19 13:49:45,574 INFO L175 Difference]: Start difference. First operand has 102 places, 98 transitions, 277 flow. Second operand 8 states and 606 transitions. [2024-11-19 13:49:45,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 282 transitions, 1249 flow [2024-11-19 13:49:46,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 282 transitions, 1249 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 13:49:46,255 INFO L231 Difference]: Finished difference. Result has 114 places, 108 transitions, 377 flow [2024-11-19 13:49:46,255 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=377, PETRI_PLACES=114, PETRI_TRANSITIONS=108} [2024-11-19 13:49:46,255 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 27 predicate places. [2024-11-19 13:49:46,256 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 108 transitions, 377 flow [2024-11-19 13:49:46,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.333333333333336) internal successors, (290), 6 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:49:46,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:49:46,256 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:49:46,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 13:49:46,256 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-19 13:49:46,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:49:46,256 INFO L85 PathProgramCache]: Analyzing trace with hash -132764386, now seen corresponding path program 1 times [2024-11-19 13:49:46,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:49:46,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846479145] [2024-11-19 13:49:46,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:49:46,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:49:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:49:46,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:49:46,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:49:46,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846479145] [2024-11-19 13:49:46,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846479145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:49:46,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:49:46,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 13:49:46,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857292616] [2024-11-19 13:49:46,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:49:46,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 13:49:46,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:49:46,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 13:49:46,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 13:49:46,322 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 95 [2024-11-19 13:49:46,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 108 transitions, 377 flow. Second operand has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:49:46,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:49:46,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 95 [2024-11-19 13:49:46,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:49:54,621 INFO L124 PetriNetUnfolderBase]: 69901/119083 cut-off events. [2024-11-19 13:49:54,622 INFO L125 PetriNetUnfolderBase]: For 78039/78039 co-relation queries the response was YES. [2024-11-19 13:49:55,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263151 conditions, 119083 events. 69901/119083 cut-off events. For 78039/78039 co-relation queries the response was YES. Maximal size of possible extension queue 4227. Compared 1177357 event pairs, 21238 based on Foata normal form. 513/108613 useless extension candidates. Maximal degree in co-relation 254823. Up to 37144 conditions per place. [2024-11-19 13:49:55,902 INFO L140 encePairwiseOnDemand]: 88/95 looper letters, 198 selfloop transitions, 8 changer transitions 0/255 dead transitions. [2024-11-19 13:49:55,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 255 transitions, 1185 flow [2024-11-19 13:49:55,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 13:49:55,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 13:49:55,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 533 transitions. [2024-11-19 13:49:55,905 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8015037593984963 [2024-11-19 13:49:55,905 INFO L175 Difference]: Start difference. First operand has 114 places, 108 transitions, 377 flow. Second operand 7 states and 533 transitions. [2024-11-19 13:49:55,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 255 transitions, 1185 flow [2024-11-19 13:49:56,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 255 transitions, 1185 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 13:49:56,837 INFO L231 Difference]: Finished difference. Result has 123 places, 110 transitions, 418 flow [2024-11-19 13:49:56,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=418, PETRI_PLACES=123, PETRI_TRANSITIONS=110} [2024-11-19 13:49:56,838 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 36 predicate places. [2024-11-19 13:49:56,838 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 110 transitions, 418 flow [2024-11-19 13:49:56,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.6) internal successors, (248), 5 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:49:56,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:49:56,839 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-19 13:49:56,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 13:49:56,839 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2024-11-19 13:49:56,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:49:56,840 INFO L85 PathProgramCache]: Analyzing trace with hash 290427375, now seen corresponding path program 1 times [2024-11-19 13:49:56,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:49:56,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826877292] [2024-11-19 13:49:56,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:49:56,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:49:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:49:56,845 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 13:49:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 13:49:56,851 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 13:49:56,851 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 13:49:56,851 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2024-11-19 13:49:56,851 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 33 remaining) [2024-11-19 13:49:56,851 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 33 remaining) [2024-11-19 13:49:56,851 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 33 remaining) [2024-11-19 13:49:56,851 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 33 remaining) [2024-11-19 13:49:56,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 33 remaining) [2024-11-19 13:49:56,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 33 remaining) [2024-11-19 13:49:56,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 33 remaining) [2024-11-19 13:49:56,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 33 remaining) [2024-11-19 13:49:56,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 33 remaining) [2024-11-19 13:49:56,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 33 remaining) [2024-11-19 13:49:56,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 33 remaining) [2024-11-19 13:49:56,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 33 remaining) [2024-11-19 13:49:56,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 33 remaining) [2024-11-19 13:49:56,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 33 remaining) [2024-11-19 13:49:56,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 33 remaining) [2024-11-19 13:49:56,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 33 remaining) [2024-11-19 13:49:56,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 33 remaining) [2024-11-19 13:49:56,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 33 remaining) [2024-11-19 13:49:56,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 33 remaining) [2024-11-19 13:49:56,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 33 remaining) [2024-11-19 13:49:56,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 33 remaining) [2024-11-19 13:49:56,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 33 remaining) [2024-11-19 13:49:56,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 33 remaining) [2024-11-19 13:49:56,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 33 remaining) [2024-11-19 13:49:56,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 33 remaining) [2024-11-19 13:49:56,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 33 remaining) [2024-11-19 13:49:56,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 33 remaining) [2024-11-19 13:49:56,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 33 remaining) [2024-11-19 13:49:56,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 33 remaining) [2024-11-19 13:49:56,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 33 remaining) [2024-11-19 13:49:56,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 33 remaining) [2024-11-19 13:49:56,855 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 33 remaining) [2024-11-19 13:49:56,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 13:49:56,855 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:49:56,855 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 13:49:56,855 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-19 13:49:56,889 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 13:49:56,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 125 transitions, 278 flow [2024-11-19 13:49:56,897 INFO L124 PetriNetUnfolderBase]: 20/136 cut-off events. [2024-11-19 13:49:56,898 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-19 13:49:56,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 136 events. 20/136 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 521 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 119. Up to 5 conditions per place. [2024-11-19 13:49:56,898 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 125 transitions, 278 flow [2024-11-19 13:49:56,899 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 125 transitions, 278 flow [2024-11-19 13:49:56,900 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:49:56,900 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;@76ae44a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:49:56,901 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-11-19 13:49:56,901 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:49:56,901 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-19 13:49:56,902 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 13:49:56,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:49:56,902 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 13:49:56,902 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2024-11-19 13:49:56,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:49:56,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1856405565, now seen corresponding path program 1 times [2024-11-19 13:49:56,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:49:56,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774130103] [2024-11-19 13:49:56,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:49:56,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:49:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:49:56,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:49:56,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:49:56,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774130103] [2024-11-19 13:49:56,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774130103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:49:56,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:49:56,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:49:56,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673217521] [2024-11-19 13:49:56,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:49:56,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:49:56,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:49:56,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:49:56,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:49:56,927 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 125 [2024-11-19 13:49:56,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 125 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:49:56,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:49:56,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 125 [2024-11-19 13:49:56,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand