./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-match-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-match-trans.wvr.c -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 58a3707e98508adde0e15b9d8e43fa1e77573e5478a67cbc9ef6d2cbcb9307e7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:46:03,800 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:46:03,866 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:46:03,871 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:46:03,874 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:46:03,903 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:46:03,904 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:46:03,904 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:46:03,905 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:46:03,906 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:46:03,906 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:46:03,907 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:46:03,907 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:46:03,909 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:46:03,909 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:46:03,910 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:46:03,910 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:46:03,910 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:46:03,911 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:46:03,911 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:46:03,911 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:46:03,915 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:46:03,915 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:46:03,916 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:46:03,916 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:46:03,916 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:46:03,916 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:46:03,916 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:46:03,917 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:46:03,917 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:46:03,917 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:46:03,917 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:46:03,918 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:46:03,918 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:46:03,918 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:46:03,920 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:46:03,920 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:46:03,920 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:46:03,921 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:46:03,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:46:03,921 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:46:03,922 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:46:03,922 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:46:03,922 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:46:03,923 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58a3707e98508adde0e15b9d8e43fa1e77573e5478a67cbc9ef6d2cbcb9307e7 [2024-10-13 16:46:04,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:46:04,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:46:04,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:46:04,210 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:46:04,210 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:46:04,211 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-match-trans.wvr.c [2024-10-13 16:46:05,642 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:46:05,817 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:46:05,817 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-match-trans.wvr.c [2024-10-13 16:46:05,825 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47b6c0c4b/8f9aa3351f7c4733b19d4fd33cdf3dae/FLAGa559c5257 [2024-10-13 16:46:05,837 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47b6c0c4b/8f9aa3351f7c4733b19d4fd33cdf3dae [2024-10-13 16:46:05,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:46:05,841 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:46:05,842 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:46:05,843 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:46:05,848 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:46:05,849 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:46:05" (1/1) ... [2024-10-13 16:46:05,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ae10122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:05, skipping insertion in model container [2024-10-13 16:46:05,850 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:46:05" (1/1) ... [2024-10-13 16:46:05,874 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:46:06,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:46:06,151 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:46:06,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:46:06,189 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:46:06,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:06 WrapperNode [2024-10-13 16:46:06,190 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:46:06,191 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:46:06,191 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:46:06,191 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:46:06,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:06" (1/1) ... [2024-10-13 16:46:06,203 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:06" (1/1) ... [2024-10-13 16:46:06,233 INFO L138 Inliner]: procedures = 22, calls = 19, calls flagged for inlining = 12, calls inlined = 22, statements flattened = 281 [2024-10-13 16:46:06,233 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:46:06,234 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:46:06,236 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:46:06,236 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:46:06,245 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:06" (1/1) ... [2024-10-13 16:46:06,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:06" (1/1) ... [2024-10-13 16:46:06,252 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:06" (1/1) ... [2024-10-13 16:46:06,277 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]. [2024-10-13 16:46:06,278 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:06" (1/1) ... [2024-10-13 16:46:06,278 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:06" (1/1) ... [2024-10-13 16:46:06,283 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:06" (1/1) ... [2024-10-13 16:46:06,288 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:06" (1/1) ... [2024-10-13 16:46:06,289 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:06" (1/1) ... [2024-10-13 16:46:06,291 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:06" (1/1) ... [2024-10-13 16:46:06,294 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:46:06,295 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:46:06,295 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:46:06,295 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:46:06,296 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:06" (1/1) ... [2024-10-13 16:46:06,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:46:06,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:46:06,328 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) [2024-10-13 16:46:06,331 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 [2024-10-13 16:46:06,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:46:06,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 16:46:06,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 16:46:06,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 16:46:06,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 16:46:06,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 16:46:06,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 16:46:06,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:46:06,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:46:06,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:46:06,383 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:46:06,512 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:46:06,515 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:46:07,057 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:46:07,057 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:46:07,378 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:46:07,379 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 16:46:07,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:46:07 BoogieIcfgContainer [2024-10-13 16:46:07,380 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:46:07,382 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:46:07,383 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:46:07,386 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:46:07,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:46:05" (1/3) ... [2024-10-13 16:46:07,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511e0ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:46:07, skipping insertion in model container [2024-10-13 16:46:07,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:46:06" (2/3) ... [2024-10-13 16:46:07,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511e0ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:46:07, skipping insertion in model container [2024-10-13 16:46:07,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:46:07" (3/3) ... [2024-10-13 16:46:07,389 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-trans.wvr.c [2024-10-13 16:46:07,409 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:46:07,410 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2024-10-13 16:46:07,410 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:46:07,521 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 16:46:07,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 125 transitions, 271 flow [2024-10-13 16:46:07,626 INFO L124 PetriNetUnfolderBase]: 12/122 cut-off events. [2024-10-13 16:46:07,627 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 16:46:07,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 122 events. 12/122 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 495 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2024-10-13 16:46:07,633 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 125 transitions, 271 flow [2024-10-13 16:46:07,640 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 120 transitions, 255 flow [2024-10-13 16:46:07,651 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:46:07,657 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;@447e9776, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:46:07,657 INFO L334 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2024-10-13 16:46:07,663 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:46:07,663 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-10-13 16:46:07,663 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:46:07,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:46:07,664 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-13 16:46:07,665 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-13 16:46:07,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:46:07,670 INFO L85 PathProgramCache]: Analyzing trace with hash 823388519, now seen corresponding path program 1 times [2024-10-13 16:46:07,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:46:07,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313229263] [2024-10-13 16:46:07,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:46:07,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:46:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:07,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:46:07,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:46:07,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313229263] [2024-10-13 16:46:07,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313229263] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:46:07,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:46:07,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:46:07,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465743660] [2024-10-13 16:46:07,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:46:07,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:46:07,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:46:07,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:46:07,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:46:08,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 125 [2024-10-13 16:46:08,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 120 transitions, 255 flow. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 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) [2024-10-13 16:46:08,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:46:08,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 125 [2024-10-13 16:46:08,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:46:12,328 INFO L124 PetriNetUnfolderBase]: 23220/40491 cut-off events. [2024-10-13 16:46:12,330 INFO L125 PetriNetUnfolderBase]: For 611/611 co-relation queries the response was YES. [2024-10-13 16:46:12,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71977 conditions, 40491 events. 23220/40491 cut-off events. For 611/611 co-relation queries the response was YES. Maximal size of possible extension queue 1561. Compared 365678 event pairs, 5655 based on Foata normal form. 1256/36389 useless extension candidates. Maximal degree in co-relation 70832. Up to 15195 conditions per place. [2024-10-13 16:46:12,716 INFO L140 encePairwiseOnDemand]: 110/125 looper letters, 104 selfloop transitions, 10 changer transitions 0/180 dead transitions. [2024-10-13 16:46:12,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 180 transitions, 615 flow [2024-10-13 16:46:12,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:46:12,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:46:12,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 396 transitions. [2024-10-13 16:46:12,733 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.792 [2024-10-13 16:46:12,735 INFO L175 Difference]: Start difference. First operand has 118 places, 120 transitions, 255 flow. Second operand 4 states and 396 transitions. [2024-10-13 16:46:12,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 180 transitions, 615 flow [2024-10-13 16:46:12,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 180 transitions, 600 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 16:46:12,755 INFO L231 Difference]: Finished difference. Result has 117 places, 124 transitions, 312 flow [2024-10-13 16:46:12,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=312, PETRI_PLACES=117, PETRI_TRANSITIONS=124} [2024-10-13 16:46:12,763 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -1 predicate places. [2024-10-13 16:46:12,764 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 124 transitions, 312 flow [2024-10-13 16:46:12,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 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) [2024-10-13 16:46:12,764 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:46:12,765 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-13 16:46:12,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:46:12,765 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-13 16:46:12,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:46:12,766 INFO L85 PathProgramCache]: Analyzing trace with hash -244758723, now seen corresponding path program 1 times [2024-10-13 16:46:12,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:46:12,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698480203] [2024-10-13 16:46:12,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:46:12,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:46:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:12,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:46:12,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:46:12,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698480203] [2024-10-13 16:46:12,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698480203] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:46:12,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:46:12,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:46:12,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023598540] [2024-10-13 16:46:12,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:46:12,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:46:12,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:46:12,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:46:12,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:46:12,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 125 [2024-10-13 16:46:12,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 124 transitions, 312 flow. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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) [2024-10-13 16:46:12,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:46:12,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 125 [2024-10-13 16:46:12,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:46:15,838 INFO L124 PetriNetUnfolderBase]: 16328/32348 cut-off events. [2024-10-13 16:46:15,838 INFO L125 PetriNetUnfolderBase]: For 6721/7168 co-relation queries the response was YES. [2024-10-13 16:46:15,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59836 conditions, 32348 events. 16328/32348 cut-off events. For 6721/7168 co-relation queries the response was YES. Maximal size of possible extension queue 1305. Compared 320234 event pairs, 7164 based on Foata normal form. 447/28186 useless extension candidates. Maximal degree in co-relation 40982. Up to 11223 conditions per place. [2024-10-13 16:46:16,118 INFO L140 encePairwiseOnDemand]: 118/125 looper letters, 71 selfloop transitions, 7 changer transitions 0/152 dead transitions. [2024-10-13 16:46:16,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 152 transitions, 529 flow [2024-10-13 16:46:16,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:46:16,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:46:16,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2024-10-13 16:46:16,123 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-10-13 16:46:16,123 INFO L175 Difference]: Start difference. First operand has 117 places, 124 transitions, 312 flow. Second operand 4 states and 375 transitions. [2024-10-13 16:46:16,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 152 transitions, 529 flow [2024-10-13 16:46:16,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 152 transitions, 529 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:46:16,156 INFO L231 Difference]: Finished difference. Result has 120 places, 124 transitions, 336 flow [2024-10-13 16:46:16,157 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=336, PETRI_PLACES=120, PETRI_TRANSITIONS=124} [2024-10-13 16:46:16,157 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 2 predicate places. [2024-10-13 16:46:16,158 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 124 transitions, 336 flow [2024-10-13 16:46:16,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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) [2024-10-13 16:46:16,158 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:46:16,158 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:46:16,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 16:46:16,160 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-13 16:46:16,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:46:16,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1002383371, now seen corresponding path program 1 times [2024-10-13 16:46:16,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:46:16,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765704471] [2024-10-13 16:46:16,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:46:16,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:46:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:16,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:46:16,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:46:16,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765704471] [2024-10-13 16:46:16,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765704471] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:46:16,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:46:16,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:46:16,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129067927] [2024-10-13 16:46:16,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:46:16,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:46:16,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:46:16,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:46:16,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:46:16,281 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 125 [2024-10-13 16:46:16,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 124 transitions, 336 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 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) [2024-10-13 16:46:16,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:46:16,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 125 [2024-10-13 16:46:16,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:46:18,699 INFO L124 PetriNetUnfolderBase]: 17549/33901 cut-off events. [2024-10-13 16:46:18,699 INFO L125 PetriNetUnfolderBase]: For 15579/16026 co-relation queries the response was YES. [2024-10-13 16:46:18,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66490 conditions, 33901 events. 17549/33901 cut-off events. For 15579/16026 co-relation queries the response was YES. Maximal size of possible extension queue 1371. Compared 330637 event pairs, 8032 based on Foata normal form. 685/29693 useless extension candidates. Maximal degree in co-relation 46252. Up to 12560 conditions per place. [2024-10-13 16:46:18,923 INFO L140 encePairwiseOnDemand]: 119/125 looper letters, 73 selfloop transitions, 7 changer transitions 0/150 dead transitions. [2024-10-13 16:46:18,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 150 transitions, 549 flow [2024-10-13 16:46:18,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:46:18,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:46:18,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 366 transitions. [2024-10-13 16:46:18,927 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.732 [2024-10-13 16:46:18,927 INFO L175 Difference]: Start difference. First operand has 120 places, 124 transitions, 336 flow. Second operand 4 states and 366 transitions. [2024-10-13 16:46:18,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 150 transitions, 549 flow [2024-10-13 16:46:18,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 150 transitions, 541 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:46:18,986 INFO L231 Difference]: Finished difference. Result has 120 places, 123 transitions, 338 flow [2024-10-13 16:46:18,987 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=338, PETRI_PLACES=120, PETRI_TRANSITIONS=123} [2024-10-13 16:46:18,987 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 2 predicate places. [2024-10-13 16:46:18,988 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 123 transitions, 338 flow [2024-10-13 16:46:18,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 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) [2024-10-13 16:46:18,989 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:46:18,989 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:46:18,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 16:46:18,989 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-13 16:46:18,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:46:18,990 INFO L85 PathProgramCache]: Analyzing trace with hash 937383314, now seen corresponding path program 1 times [2024-10-13 16:46:18,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:46:18,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082120853] [2024-10-13 16:46:18,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:46:18,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:46:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:19,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:46:19,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:46:19,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082120853] [2024-10-13 16:46:19,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082120853] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:46:19,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:46:19,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:46:19,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648928835] [2024-10-13 16:46:19,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:46:19,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:46:19,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:46:19,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:46:19,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:46:19,114 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 125 [2024-10-13 16:46:19,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 123 transitions, 338 flow. Second operand has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 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) [2024-10-13 16:46:19,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:46:19,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 125 [2024-10-13 16:46:19,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:46:23,066 INFO L124 PetriNetUnfolderBase]: 34240/59048 cut-off events. [2024-10-13 16:46:23,066 INFO L125 PetriNetUnfolderBase]: For 33562/35459 co-relation queries the response was YES. [2024-10-13 16:46:23,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123730 conditions, 59048 events. 34240/59048 cut-off events. For 33562/35459 co-relation queries the response was YES. Maximal size of possible extension queue 2160. Compared 559488 event pairs, 8670 based on Foata normal form. 3082/53443 useless extension candidates. Maximal degree in co-relation 63394. Up to 21800 conditions per place. [2024-10-13 16:46:23,511 INFO L140 encePairwiseOnDemand]: 110/125 looper letters, 117 selfloop transitions, 10 changer transitions 0/191 dead transitions. [2024-10-13 16:46:23,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 191 transitions, 842 flow [2024-10-13 16:46:23,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:46:23,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:46:23,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 394 transitions. [2024-10-13 16:46:23,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.788 [2024-10-13 16:46:23,513 INFO L175 Difference]: Start difference. First operand has 120 places, 123 transitions, 338 flow. Second operand 4 states and 394 transitions. [2024-10-13 16:46:23,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 191 transitions, 842 flow [2024-10-13 16:46:23,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 191 transitions, 816 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:46:23,790 INFO L231 Difference]: Finished difference. Result has 121 places, 127 transitions, 390 flow [2024-10-13 16:46:23,790 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=390, PETRI_PLACES=121, PETRI_TRANSITIONS=127} [2024-10-13 16:46:23,791 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 3 predicate places. [2024-10-13 16:46:23,791 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 127 transitions, 390 flow [2024-10-13 16:46:23,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 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) [2024-10-13 16:46:23,792 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:46:23,792 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:46:23,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:46:23,792 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-13 16:46:23,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:46:23,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1005887337, now seen corresponding path program 1 times [2024-10-13 16:46:23,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:46:23,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419388675] [2024-10-13 16:46:23,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:46:23,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:46:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:23,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:46:23,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:46:23,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419388675] [2024-10-13 16:46:23,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419388675] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:46:23,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:46:23,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:46:23,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974160163] [2024-10-13 16:46:23,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:46:23,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:46:23,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:46:23,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:46:23,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:46:23,901 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 125 [2024-10-13 16:46:23,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 127 transitions, 390 flow. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 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) [2024-10-13 16:46:23,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:46:23,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 125 [2024-10-13 16:46:23,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:46:27,369 INFO L124 PetriNetUnfolderBase]: 25254/48639 cut-off events. [2024-10-13 16:46:27,370 INFO L125 PetriNetUnfolderBase]: For 29942/31767 co-relation queries the response was YES. [2024-10-13 16:46:27,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105193 conditions, 48639 events. 25254/48639 cut-off events. For 29942/31767 co-relation queries the response was YES. Maximal size of possible extension queue 1843. Compared 499734 event pairs, 8236 based on Foata normal form. 1356/43639 useless extension candidates. Maximal degree in co-relation 39390. Up to 18012 conditions per place. [2024-10-13 16:46:27,925 INFO L140 encePairwiseOnDemand]: 118/125 looper letters, 80 selfloop transitions, 7 changer transitions 0/159 dead transitions. [2024-10-13 16:46:27,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 159 transitions, 681 flow [2024-10-13 16:46:27,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:46:27,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:46:27,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 374 transitions. [2024-10-13 16:46:27,927 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.748 [2024-10-13 16:46:27,927 INFO L175 Difference]: Start difference. First operand has 121 places, 127 transitions, 390 flow. Second operand 4 states and 374 transitions. [2024-10-13 16:46:27,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 159 transitions, 681 flow [2024-10-13 16:46:28,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 159 transitions, 681 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:46:28,409 INFO L231 Difference]: Finished difference. Result has 124 places, 127 transitions, 414 flow [2024-10-13 16:46:28,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=414, PETRI_PLACES=124, PETRI_TRANSITIONS=127} [2024-10-13 16:46:28,410 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 6 predicate places. [2024-10-13 16:46:28,410 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 127 transitions, 414 flow [2024-10-13 16:46:28,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 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) [2024-10-13 16:46:28,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:46:28,410 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:46:28,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:46:28,410 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-13 16:46:28,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:46:28,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1009113375, now seen corresponding path program 1 times [2024-10-13 16:46:28,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:46:28,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632005659] [2024-10-13 16:46:28,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:46:28,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:46:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:28,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:46:28,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:46:28,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632005659] [2024-10-13 16:46:28,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632005659] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:46:28,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:46:28,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:46:28,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396799376] [2024-10-13 16:46:28,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:46:28,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:46:28,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:46:28,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:46:28,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:46:28,531 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 125 [2024-10-13 16:46:28,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 127 transitions, 414 flow. Second operand has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 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) [2024-10-13 16:46:28,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:46:28,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 125 [2024-10-13 16:46:28,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:46:33,278 INFO L124 PetriNetUnfolderBase]: 42565/68369 cut-off events. [2024-10-13 16:46:33,278 INFO L125 PetriNetUnfolderBase]: For 50412/53717 co-relation queries the response was YES. [2024-10-13 16:46:33,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164330 conditions, 68369 events. 42565/68369 cut-off events. For 50412/53717 co-relation queries the response was YES. Maximal size of possible extension queue 2359. Compared 604660 event pairs, 10085 based on Foata normal form. 1652/65512 useless extension candidates. Maximal degree in co-relation 65903. Up to 29582 conditions per place. [2024-10-13 16:46:33,914 INFO L140 encePairwiseOnDemand]: 114/125 looper letters, 115 selfloop transitions, 12 changer transitions 0/192 dead transitions. [2024-10-13 16:46:33,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 192 transitions, 910 flow [2024-10-13 16:46:33,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:46:33,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:46:33,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 466 transitions. [2024-10-13 16:46:33,916 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7456 [2024-10-13 16:46:33,916 INFO L175 Difference]: Start difference. First operand has 124 places, 127 transitions, 414 flow. Second operand 5 states and 466 transitions. [2024-10-13 16:46:33,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 192 transitions, 910 flow [2024-10-13 16:46:34,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 192 transitions, 892 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:46:34,743 INFO L231 Difference]: Finished difference. Result has 127 places, 127 transitions, 452 flow [2024-10-13 16:46:34,744 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=127, PETRI_TRANSITIONS=127} [2024-10-13 16:46:34,744 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 9 predicate places. [2024-10-13 16:46:34,744 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 127 transitions, 452 flow [2024-10-13 16:46:34,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 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) [2024-10-13 16:46:34,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:46:34,745 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:46:34,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 16:46:34,745 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-13 16:46:34,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:46:34,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1009114400, now seen corresponding path program 1 times [2024-10-13 16:46:34,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:46:34,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090503632] [2024-10-13 16:46:34,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:46:34,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:46:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:34,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:46:34,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:46:34,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090503632] [2024-10-13 16:46:34,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090503632] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:46:34,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:46:34,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:46:34,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037149386] [2024-10-13 16:46:34,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:46:34,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:46:34,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:46:34,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:46:34,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:46:34,837 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 125 [2024-10-13 16:46:34,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 127 transitions, 452 flow. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 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) [2024-10-13 16:46:34,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:46:34,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 125 [2024-10-13 16:46:34,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:46:39,061 INFO L124 PetriNetUnfolderBase]: 31281/56468 cut-off events. [2024-10-13 16:46:39,061 INFO L125 PetriNetUnfolderBase]: For 60042/62434 co-relation queries the response was YES. [2024-10-13 16:46:39,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138389 conditions, 56468 events. 31281/56468 cut-off events. For 60042/62434 co-relation queries the response was YES. Maximal size of possible extension queue 2051. Compared 557311 event pairs, 9365 based on Foata normal form. 2074/53345 useless extension candidates. Maximal degree in co-relation 52939. Up to 17009 conditions per place. [2024-10-13 16:46:39,420 INFO L140 encePairwiseOnDemand]: 116/125 looper letters, 117 selfloop transitions, 9 changer transitions 0/191 dead transitions. [2024-10-13 16:46:39,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 191 transitions, 926 flow [2024-10-13 16:46:39,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:46:39,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:46:39,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2024-10-13 16:46:39,422 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.776 [2024-10-13 16:46:39,422 INFO L175 Difference]: Start difference. First operand has 127 places, 127 transitions, 452 flow. Second operand 4 states and 388 transitions. [2024-10-13 16:46:39,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 191 transitions, 926 flow [2024-10-13 16:46:40,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 191 transitions, 916 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:46:40,558 INFO L231 Difference]: Finished difference. Result has 128 places, 125 transitions, 448 flow [2024-10-13 16:46:40,558 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=448, PETRI_PLACES=128, PETRI_TRANSITIONS=125} [2024-10-13 16:46:40,559 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 10 predicate places. [2024-10-13 16:46:40,559 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 125 transitions, 448 flow [2024-10-13 16:46:40,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 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) [2024-10-13 16:46:40,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:46:40,560 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:46:40,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 16:46:40,560 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-13 16:46:40,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:46:40,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1217744526, now seen corresponding path program 1 times [2024-10-13 16:46:40,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:46:40,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865555527] [2024-10-13 16:46:40,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:46:40,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:46:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:40,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:46:40,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:46:40,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865555527] [2024-10-13 16:46:40,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865555527] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:46:40,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:46:40,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:46:40,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593719204] [2024-10-13 16:46:40,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:46:40,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:46:40,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:46:40,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:46:40,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:46:40,732 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 125 [2024-10-13 16:46:40,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 125 transitions, 448 flow. Second operand has 6 states, 6 states have (on average 66.16666666666667) internal successors, (397), 6 states have internal predecessors, (397), 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) [2024-10-13 16:46:40,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:46:40,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 125 [2024-10-13 16:46:40,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:46:46,005 INFO L124 PetriNetUnfolderBase]: 43377/69475 cut-off events. [2024-10-13 16:46:46,005 INFO L125 PetriNetUnfolderBase]: For 73631/77130 co-relation queries the response was YES. [2024-10-13 16:46:46,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173696 conditions, 69475 events. 43377/69475 cut-off events. For 73631/77130 co-relation queries the response was YES. Maximal size of possible extension queue 2493. Compared 615203 event pairs, 12433 based on Foata normal form. 3521/68006 useless extension candidates. Maximal degree in co-relation 66041. Up to 23272 conditions per place. [2024-10-13 16:46:46,440 INFO L140 encePairwiseOnDemand]: 112/125 looper letters, 212 selfloop transitions, 13 changer transitions 0/287 dead transitions. [2024-10-13 16:46:46,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 287 transitions, 1479 flow [2024-10-13 16:46:46,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 16:46:46,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 16:46:46,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 713 transitions. [2024-10-13 16:46:46,442 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.713 [2024-10-13 16:46:46,442 INFO L175 Difference]: Start difference. First operand has 128 places, 125 transitions, 448 flow. Second operand 8 states and 713 transitions. [2024-10-13 16:46:46,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 287 transitions, 1479 flow [2024-10-13 16:46:46,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 287 transitions, 1472 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:46:46,879 INFO L231 Difference]: Finished difference. Result has 137 places, 127 transitions, 498 flow [2024-10-13 16:46:46,880 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=498, PETRI_PLACES=137, PETRI_TRANSITIONS=127} [2024-10-13 16:46:46,880 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 19 predicate places. [2024-10-13 16:46:46,880 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 127 transitions, 498 flow [2024-10-13 16:46:46,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.16666666666667) internal successors, (397), 6 states have internal predecessors, (397), 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) [2024-10-13 16:46:46,881 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:46:46,881 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:46:46,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 16:46:46,882 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-13 16:46:46,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:46:46,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1174574678, now seen corresponding path program 1 times [2024-10-13 16:46:46,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:46:46,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732322043] [2024-10-13 16:46:46,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:46:46,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:46:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:46,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:46:46,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:46:46,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732322043] [2024-10-13 16:46:46,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732322043] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:46:46,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:46:46,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:46:46,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754722599] [2024-10-13 16:46:46,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:46:46,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:46:46,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:46:46,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:46:46,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:46:46,962 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 125 [2024-10-13 16:46:46,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 127 transitions, 498 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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) [2024-10-13 16:46:46,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:46:46,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 125 [2024-10-13 16:46:46,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand