./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/popl20-figure1.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/popl20-figure1.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 611602be63cf2d0baa947efd80226c155579158ab3e72558e2c6507fec5bab01 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:49:55,167 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:49:55,223 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:49:55,227 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:49:55,228 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:49:55,246 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:49:55,246 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:49:55,247 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:49:55,247 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:49:55,248 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:49:55,250 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:49:55,250 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:49:55,251 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:49:55,251 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:49:55,251 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:49:55,251 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:49:55,251 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:49:55,252 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:49:55,252 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:49:55,252 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:49:55,252 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:49:55,252 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:49:55,253 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:49:55,253 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:49:55,253 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:49:55,253 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:49:55,253 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:49:55,254 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:49:55,254 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:49:55,254 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:49:55,254 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:49:55,254 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:49:55,255 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:49:55,255 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:49:55,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:49:55,255 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:49:55,256 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:49:55,256 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:49:55,256 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:49:55,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:49:55,256 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:49:55,257 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:49:55,257 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:49:55,257 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:49:55,257 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 611602be63cf2d0baa947efd80226c155579158ab3e72558e2c6507fec5bab01 [2024-10-13 16:49:55,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:49:55,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:49:55,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:49:55,474 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:49:55,474 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:49:55,475 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-10-13 16:49:56,677 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:49:56,818 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:49:56,818 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-10-13 16:49:56,824 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0974f77b/a1725dc1f2844990851d7fc32c65a0ca/FLAG16771cd6f [2024-10-13 16:49:56,836 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0974f77b/a1725dc1f2844990851d7fc32c65a0ca [2024-10-13 16:49:56,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:49:56,839 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:49:56,841 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:49:56,841 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:49:56,846 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:49:56,846 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:49:56" (1/1) ... [2024-10-13 16:49:56,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@99ae836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:56, skipping insertion in model container [2024-10-13 16:49:56,847 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:49:56" (1/1) ... [2024-10-13 16:49:56,878 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:49:57,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:49:57,016 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:49:57,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:49:57,041 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:49:57,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:57 WrapperNode [2024-10-13 16:49:57,041 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:49:57,042 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:49:57,042 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:49:57,042 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:49:57,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:57" (1/1) ... [2024-10-13 16:49:57,051 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:57" (1/1) ... [2024-10-13 16:49:57,063 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 64 [2024-10-13 16:49:57,064 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:49:57,064 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:49:57,064 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:49:57,064 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:49:57,071 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:57" (1/1) ... [2024-10-13 16:49:57,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:57" (1/1) ... [2024-10-13 16:49:57,073 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:57" (1/1) ... [2024-10-13 16:49:57,082 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 16:49:57,082 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:57" (1/1) ... [2024-10-13 16:49:57,083 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:57" (1/1) ... [2024-10-13 16:49:57,086 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:57" (1/1) ... [2024-10-13 16:49:57,088 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:57" (1/1) ... [2024-10-13 16:49:57,090 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:57" (1/1) ... [2024-10-13 16:49:57,090 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:57" (1/1) ... [2024-10-13 16:49:57,091 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:49:57,092 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:49:57,092 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:49:57,092 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:49:57,093 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:57" (1/1) ... [2024-10-13 16:49:57,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:49:57,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:57,115 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 16:49:57,116 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 16:49:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:49:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 16:49:57,146 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 16:49:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 16:49:57,146 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 16:49:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:49:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 16:49:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 16:49:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:49:57,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:49:57,148 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 16:49:57,210 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:49:57,211 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:49:57,336 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:49:57,337 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:49:57,424 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:49:57,424 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 16:49:57,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:49:57 BoogieIcfgContainer [2024-10-13 16:49:57,425 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:49:57,427 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:49:57,427 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:49:57,429 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:49:57,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:49:56" (1/3) ... [2024-10-13 16:49:57,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61dfbb01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:49:57, skipping insertion in model container [2024-10-13 16:49:57,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:49:57" (2/3) ... [2024-10-13 16:49:57,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61dfbb01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:49:57, skipping insertion in model container [2024-10-13 16:49:57,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:49:57" (3/3) ... [2024-10-13 16:49:57,432 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2024-10-13 16:49:57,443 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:49:57,444 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-13 16:49:57,444 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:49:57,485 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 16:49:57,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2024-10-13 16:49:57,533 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2024-10-13 16:49:57,534 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 16:49:57,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 73 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-10-13 16:49:57,536 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2024-10-13 16:49:57,540 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 28 transitions, 65 flow [2024-10-13 16:49:57,549 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:49:57,553 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;@413e180e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:49:57,553 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-13 16:49:57,557 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:49:57,557 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-13 16:49:57,557 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 16:49:57,558 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:57,558 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-13 16:49:57,558 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-13 16:49:57,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:57,564 INFO L85 PathProgramCache]: Analyzing trace with hash 246124331, now seen corresponding path program 1 times [2024-10-13 16:49:57,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:57,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177985542] [2024-10-13 16:49:57,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:57,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:57,736 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 16:49:57,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:57,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177985542] [2024-10-13 16:49:57,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177985542] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:57,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:57,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 16:49:57,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504334573] [2024-10-13 16:49:57,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:57,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:49:57,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:57,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:49:57,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:49:57,779 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-10-13 16:49:57,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:57,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:57,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-10-13 16:49:57,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:57,914 INFO L124 PetriNetUnfolderBase]: 120/292 cut-off events. [2024-10-13 16:49:57,915 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-10-13 16:49:57,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 292 events. 120/292 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1300 event pairs, 40 based on Foata normal form. 7/244 useless extension candidates. Maximal degree in co-relation 487. Up to 164 conditions per place. [2024-10-13 16:49:57,919 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 21 selfloop transitions, 2 changer transitions 2/35 dead transitions. [2024-10-13 16:49:57,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 135 flow [2024-10-13 16:49:57,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:49:57,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:49:57,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-10-13 16:49:57,928 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-10-13 16:49:57,929 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 3 states and 67 transitions. [2024-10-13 16:49:57,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 135 flow [2024-10-13 16:49:57,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 35 transitions, 127 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:49:57,935 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 76 flow [2024-10-13 16:49:57,937 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2024-10-13 16:49:57,940 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2024-10-13 16:49:57,940 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 76 flow [2024-10-13 16:49:57,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:57,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:57,941 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:57,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:49:57,941 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-13 16:49:57,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:57,942 INFO L85 PathProgramCache]: Analyzing trace with hash 302290318, now seen corresponding path program 1 times [2024-10-13 16:49:57,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:57,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682438420] [2024-10-13 16:49:57,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:57,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:58,000 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 16:49:58,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:58,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682438420] [2024-10-13 16:49:58,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682438420] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:58,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:58,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:49:58,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971109228] [2024-10-13 16:49:58,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:58,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:58,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:58,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:58,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:49:58,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-13 16:49:58,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:58,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:58,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-13 16:49:58,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:58,119 INFO L124 PetriNetUnfolderBase]: 205/415 cut-off events. [2024-10-13 16:49:58,119 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-10-13 16:49:58,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 415 events. 205/415 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1916 event pairs, 103 based on Foata normal form. 12/367 useless extension candidates. Maximal degree in co-relation 450. Up to 288 conditions per place. [2024-10-13 16:49:58,123 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 36 selfloop transitions, 3 changer transitions 1/47 dead transitions. [2024-10-13 16:49:58,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 47 transitions, 206 flow [2024-10-13 16:49:58,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:49:58,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:49:58,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-10-13 16:49:58,124 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-10-13 16:49:58,125 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 76 flow. Second operand 4 states and 78 transitions. [2024-10-13 16:49:58,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 47 transitions, 206 flow [2024-10-13 16:49:58,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 47 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:49:58,126 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 98 flow [2024-10-13 16:49:58,126 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2024-10-13 16:49:58,127 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2024-10-13 16:49:58,127 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 98 flow [2024-10-13 16:49:58,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:58,128 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:58,128 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:58,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 16:49:58,128 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-13 16:49:58,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:58,129 INFO L85 PathProgramCache]: Analyzing trace with hash -608167951, now seen corresponding path program 1 times [2024-10-13 16:49:58,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:58,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192233326] [2024-10-13 16:49:58,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:58,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:58,211 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 16:49:58,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:58,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192233326] [2024-10-13 16:49:58,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192233326] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:58,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:58,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:49:58,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497163786] [2024-10-13 16:49:58,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:58,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:58,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:58,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:58,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:49:58,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-10-13 16:49:58,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:58,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:58,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-10-13 16:49:58,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:58,318 INFO L124 PetriNetUnfolderBase]: 200/527 cut-off events. [2024-10-13 16:49:58,319 INFO L125 PetriNetUnfolderBase]: For 132/146 co-relation queries the response was YES. [2024-10-13 16:49:58,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1153 conditions, 527 events. 200/527 cut-off events. For 132/146 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2843 event pairs, 40 based on Foata normal form. 17/477 useless extension candidates. Maximal degree in co-relation 953. Up to 137 conditions per place. [2024-10-13 16:49:58,322 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 36 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2024-10-13 16:49:58,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 53 transitions, 253 flow [2024-10-13 16:49:58,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:49:58,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:49:58,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-10-13 16:49:58,324 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7265625 [2024-10-13 16:49:58,324 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 98 flow. Second operand 4 states and 93 transitions. [2024-10-13 16:49:58,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 53 transitions, 253 flow [2024-10-13 16:49:58,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 53 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:49:58,326 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 154 flow [2024-10-13 16:49:58,326 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-10-13 16:49:58,327 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2024-10-13 16:49:58,327 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 154 flow [2024-10-13 16:49:58,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:58,327 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:58,327 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:58,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 16:49:58,328 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-13 16:49:58,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:58,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1015287356, now seen corresponding path program 1 times [2024-10-13 16:49:58,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:58,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840959828] [2024-10-13 16:49:58,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:58,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:58,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:58,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:58,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840959828] [2024-10-13 16:49:58,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840959828] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:58,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458169118] [2024-10-13 16:49:58,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:58,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:58,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:58,376 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:58,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:49:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:58,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:49:58,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:58,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:58,462 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:49:58,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458169118] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:58,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:49:58,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-10-13 16:49:58,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681022296] [2024-10-13 16:49:58,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:58,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:58,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:58,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:58,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:49:58,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-10-13 16:49:58,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:58,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:58,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-10-13 16:49:58,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:58,541 INFO L124 PetriNetUnfolderBase]: 222/579 cut-off events. [2024-10-13 16:49:58,541 INFO L125 PetriNetUnfolderBase]: For 606/628 co-relation queries the response was YES. [2024-10-13 16:49:58,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1440 conditions, 579 events. 222/579 cut-off events. For 606/628 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3105 event pairs, 42 based on Foata normal form. 34/574 useless extension candidates. Maximal degree in co-relation 1242. Up to 233 conditions per place. [2024-10-13 16:49:58,545 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 27 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2024-10-13 16:49:58,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 267 flow [2024-10-13 16:49:58,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:49:58,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:49:58,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-10-13 16:49:58,548 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2024-10-13 16:49:58,548 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 154 flow. Second operand 4 states and 79 transitions. [2024-10-13 16:49:58,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 267 flow [2024-10-13 16:49:58,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 261 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-13 16:49:58,550 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 201 flow [2024-10-13 16:49:58,550 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2024-10-13 16:49:58,551 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2024-10-13 16:49:58,552 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 201 flow [2024-10-13 16:49:58,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:49:58,552 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:58,552 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:58,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 16:49:58,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:58,753 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-13 16:49:58,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:58,754 INFO L85 PathProgramCache]: Analyzing trace with hash -688572923, now seen corresponding path program 1 times [2024-10-13 16:49:58,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:58,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837034069] [2024-10-13 16:49:58,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:58,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:58,813 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 16:49:58,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:58,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837034069] [2024-10-13 16:49:58,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837034069] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:58,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:49:58,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:49:58,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874836348] [2024-10-13 16:49:58,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:58,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:49:58,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:58,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:49:58,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:49:58,822 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-13 16:49:58,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 16:49:58,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:58,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-13 16:49:58,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:58,979 INFO L124 PetriNetUnfolderBase]: 496/1023 cut-off events. [2024-10-13 16:49:58,980 INFO L125 PetriNetUnfolderBase]: For 1989/2088 co-relation queries the response was YES. [2024-10-13 16:49:58,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2911 conditions, 1023 events. 496/1023 cut-off events. For 1989/2088 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 5479 event pairs, 250 based on Foata normal form. 45/1026 useless extension candidates. Maximal degree in co-relation 1172. Up to 629 conditions per place. [2024-10-13 16:49:58,985 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 54 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-10-13 16:49:58,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 66 transitions, 519 flow [2024-10-13 16:49:58,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:49:58,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:49:58,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2024-10-13 16:49:58,987 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5859375 [2024-10-13 16:49:58,988 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 201 flow. Second operand 4 states and 75 transitions. [2024-10-13 16:49:58,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 66 transitions, 519 flow [2024-10-13 16:49:58,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 66 transitions, 474 flow, removed 22 selfloop flow, removed 1 redundant places. [2024-10-13 16:49:58,994 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 209 flow [2024-10-13 16:49:58,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2024-10-13 16:49:58,996 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2024-10-13 16:49:58,997 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 209 flow [2024-10-13 16:49:58,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 16:49:58,998 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:58,998 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 16:49:58,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:49:58,998 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-13 16:49:58,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:58,998 INFO L85 PathProgramCache]: Analyzing trace with hash -733563417, now seen corresponding path program 1 times [2024-10-13 16:49:58,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:58,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914741473] [2024-10-13 16:49:58,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:58,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:59,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:59,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:59,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914741473] [2024-10-13 16:49:59,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914741473] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:59,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067636607] [2024-10-13 16:49:59,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:59,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:59,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:59,058 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:59,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:49:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:59,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:49:59,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:59,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:59,142 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:49:59,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067636607] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:49:59,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:49:59,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-13 16:49:59,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924912808] [2024-10-13 16:49:59,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:49:59,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:49:59,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:59,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:49:59,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:49:59,161 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-13 16:49:59,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 209 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 16:49:59,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:59,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-13 16:49:59,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:59,312 INFO L124 PetriNetUnfolderBase]: 452/931 cut-off events. [2024-10-13 16:49:59,312 INFO L125 PetriNetUnfolderBase]: For 1325/1390 co-relation queries the response was YES. [2024-10-13 16:49:59,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2812 conditions, 931 events. 452/931 cut-off events. For 1325/1390 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4862 event pairs, 60 based on Foata normal form. 69/949 useless extension candidates. Maximal degree in co-relation 2506. Up to 305 conditions per place. [2024-10-13 16:49:59,318 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 65 selfloop transitions, 6 changer transitions 1/80 dead transitions. [2024-10-13 16:49:59,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 80 transitions, 569 flow [2024-10-13 16:49:59,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:49:59,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:49:59,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-10-13 16:49:59,319 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-10-13 16:49:59,319 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 209 flow. Second operand 6 states and 106 transitions. [2024-10-13 16:49:59,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 80 transitions, 569 flow [2024-10-13 16:49:59,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 80 transitions, 554 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:49:59,321 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 214 flow [2024-10-13 16:49:59,322 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2024-10-13 16:49:59,323 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2024-10-13 16:49:59,324 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 214 flow [2024-10-13 16:49:59,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 16:49:59,324 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:49:59,324 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-13 16:49:59,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 16:49:59,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-13 16:49:59,528 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-13 16:49:59,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:49:59,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1265629176, now seen corresponding path program 1 times [2024-10-13 16:49:59,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:49:59,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900093438] [2024-10-13 16:49:59,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:59,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:49:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:59,575 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:59,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:49:59,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900093438] [2024-10-13 16:49:59,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900093438] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:49:59,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873382605] [2024-10-13 16:49:59,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:49:59,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:49:59,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:49:59,578 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:49:59,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 16:49:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:49:59,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:49:59,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:49:59,632 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:59,633 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:49:59,670 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:49:59,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873382605] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:49:59,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:49:59,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-13 16:49:59,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045239087] [2024-10-13 16:49:59,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:49:59,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:49:59,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:49:59,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:49:59,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:49:59,696 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-13 16:49:59,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 214 flow. Second operand has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 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 16:49:59,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:49:59,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-13 16:49:59,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:49:59,989 INFO L124 PetriNetUnfolderBase]: 1022/2112 cut-off events. [2024-10-13 16:49:59,991 INFO L125 PetriNetUnfolderBase]: For 3811/3975 co-relation queries the response was YES. [2024-10-13 16:49:59,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6575 conditions, 2112 events. 1022/2112 cut-off events. For 3811/3975 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 11928 event pairs, 194 based on Foata normal form. 158/2260 useless extension candidates. Maximal degree in co-relation 5368. Up to 744 conditions per place. [2024-10-13 16:50:00,002 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 135 selfloop transitions, 11 changer transitions 1/155 dead transitions. [2024-10-13 16:50:00,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 155 transitions, 1165 flow [2024-10-13 16:50:00,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:50:00,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:50:00,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-10-13 16:50:00,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-10-13 16:50:00,005 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 214 flow. Second operand 10 states and 190 transitions. [2024-10-13 16:50:00,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 155 transitions, 1165 flow [2024-10-13 16:50:00,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 155 transitions, 1138 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-10-13 16:50:00,012 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 278 flow [2024-10-13 16:50:00,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=278, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2024-10-13 16:50:00,013 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 26 predicate places. [2024-10-13 16:50:00,013 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 278 flow [2024-10-13 16:50:00,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 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 16:50:00,014 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:00,014 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:00,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 16:50:00,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:00,215 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-13 16:50:00,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:00,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1307805048, now seen corresponding path program 1 times [2024-10-13 16:50:00,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:00,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959632860] [2024-10-13 16:50:00,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:00,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:00,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:00,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:00,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959632860] [2024-10-13 16:50:00,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959632860] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:00,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131794833] [2024-10-13 16:50:00,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:00,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:00,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:00,257 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:50:00,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 16:50:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:00,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:50:00,301 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:00,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:00,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:00,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131794833] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:00,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:00,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-10-13 16:50:00,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828503902] [2024-10-13 16:50:00,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:00,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 16:50:00,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:00,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 16:50:00,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:50:00,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-10-13 16:50:00,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 278 flow. Second operand has 9 states, 9 states have (on average 15.0) internal successors, (135), 9 states have internal predecessors, (135), 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 16:50:00,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:00,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-10-13 16:50:00,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:00,567 INFO L124 PetriNetUnfolderBase]: 826/2106 cut-off events. [2024-10-13 16:50:00,567 INFO L125 PetriNetUnfolderBase]: For 5243/5382 co-relation queries the response was YES. [2024-10-13 16:50:00,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6485 conditions, 2106 events. 826/2106 cut-off events. For 5243/5382 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 13779 event pairs, 87 based on Foata normal form. 266/2363 useless extension candidates. Maximal degree in co-relation 6134. Up to 389 conditions per place. [2024-10-13 16:50:00,578 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 82 selfloop transitions, 15 changer transitions 0/111 dead transitions. [2024-10-13 16:50:00,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 111 transitions, 805 flow [2024-10-13 16:50:00,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:50:00,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:50:00,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-10-13 16:50:00,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2024-10-13 16:50:00,579 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 278 flow. Second operand 7 states and 152 transitions. [2024-10-13 16:50:00,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 111 transitions, 805 flow [2024-10-13 16:50:00,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 111 transitions, 776 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-10-13 16:50:00,586 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 382 flow [2024-10-13 16:50:00,586 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=382, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2024-10-13 16:50:00,587 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 33 predicate places. [2024-10-13 16:50:00,587 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 382 flow [2024-10-13 16:50:00,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.0) internal successors, (135), 9 states have internal predecessors, (135), 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 16:50:00,587 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:00,587 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:00,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 16:50:00,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:00,788 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-13 16:50:00,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:00,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1990357390, now seen corresponding path program 1 times [2024-10-13 16:50:00,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:00,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027435929] [2024-10-13 16:50:00,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:00,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:00,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:00,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:00,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027435929] [2024-10-13 16:50:00,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027435929] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:00,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394600585] [2024-10-13 16:50:00,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:00,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:00,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:00,840 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:50:00,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 16:50:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:00,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:50:00,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:00,914 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:50:00,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394600585] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:50:00,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:50:00,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-13 16:50:00,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800659414] [2024-10-13 16:50:00,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:50:00,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:50:00,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:00,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:50:00,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:50:00,927 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-13 16:50:00,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 382 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 16:50:00,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:00,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-13 16:50:00,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:01,186 INFO L124 PetriNetUnfolderBase]: 1274/2650 cut-off events. [2024-10-13 16:50:01,187 INFO L125 PetriNetUnfolderBase]: For 7950/8072 co-relation queries the response was YES. [2024-10-13 16:50:01,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9061 conditions, 2650 events. 1274/2650 cut-off events. For 7950/8072 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 16575 event pairs, 209 based on Foata normal form. 115/2630 useless extension candidates. Maximal degree in co-relation 7957. Up to 665 conditions per place. [2024-10-13 16:50:01,203 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 115 selfloop transitions, 7 changer transitions 0/132 dead transitions. [2024-10-13 16:50:01,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 132 transitions, 1315 flow [2024-10-13 16:50:01,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:50:01,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:50:01,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-10-13 16:50:01,204 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5260416666666666 [2024-10-13 16:50:01,204 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 382 flow. Second operand 6 states and 101 transitions. [2024-10-13 16:50:01,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 132 transitions, 1315 flow [2024-10-13 16:50:01,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 132 transitions, 1230 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-10-13 16:50:01,213 INFO L231 Difference]: Finished difference. Result has 68 places, 51 transitions, 365 flow [2024-10-13 16:50:01,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=365, PETRI_PLACES=68, PETRI_TRANSITIONS=51} [2024-10-13 16:50:01,214 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 35 predicate places. [2024-10-13 16:50:01,214 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 51 transitions, 365 flow [2024-10-13 16:50:01,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 16:50:01,214 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:01,215 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:01,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 16:50:01,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:01,415 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-13 16:50:01,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:01,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1688866786, now seen corresponding path program 1 times [2024-10-13 16:50:01,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:01,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169650642] [2024-10-13 16:50:01,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:01,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:01,452 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:50:01,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:01,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169650642] [2024-10-13 16:50:01,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169650642] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:01,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709049474] [2024-10-13 16:50:01,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:01,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:01,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:01,455 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:50:01,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 16:50:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:01,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:50:01,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:01,524 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:50:01,524 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:01,555 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:50:01,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709049474] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:01,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:01,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-13 16:50:01,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354180796] [2024-10-13 16:50:01,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:01,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:50:01,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:01,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:50:01,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 16:50:01,581 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-10-13 16:50:01,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 51 transitions, 365 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 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 16:50:01,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:01,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-10-13 16:50:01,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:02,051 INFO L124 PetriNetUnfolderBase]: 2041/4312 cut-off events. [2024-10-13 16:50:02,051 INFO L125 PetriNetUnfolderBase]: For 12354/12520 co-relation queries the response was YES. [2024-10-13 16:50:02,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14867 conditions, 4312 events. 2041/4312 cut-off events. For 12354/12520 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 27986 event pairs, 453 based on Foata normal form. 225/4499 useless extension candidates. Maximal degree in co-relation 10768. Up to 1473 conditions per place. [2024-10-13 16:50:02,076 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 202 selfloop transitions, 13 changer transitions 6/231 dead transitions. [2024-10-13 16:50:02,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 231 transitions, 2268 flow [2024-10-13 16:50:02,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:50:02,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:50:02,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-10-13 16:50:02,078 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-10-13 16:50:02,078 INFO L175 Difference]: Start difference. First operand has 68 places, 51 transitions, 365 flow. Second operand 10 states and 175 transitions. [2024-10-13 16:50:02,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 231 transitions, 2268 flow [2024-10-13 16:50:02,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 231 transitions, 2238 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-10-13 16:50:02,091 INFO L231 Difference]: Finished difference. Result has 76 places, 59 transitions, 428 flow [2024-10-13 16:50:02,091 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=428, PETRI_PLACES=76, PETRI_TRANSITIONS=59} [2024-10-13 16:50:02,091 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 43 predicate places. [2024-10-13 16:50:02,092 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 59 transitions, 428 flow [2024-10-13 16:50:02,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 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 16:50:02,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:02,092 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2024-10-13 16:50:02,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 16:50:02,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:02,293 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-13 16:50:02,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:02,293 INFO L85 PathProgramCache]: Analyzing trace with hash 48756332, now seen corresponding path program 1 times [2024-10-13 16:50:02,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:02,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268835460] [2024-10-13 16:50:02,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:02,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:02,340 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:02,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:02,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268835460] [2024-10-13 16:50:02,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268835460] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:02,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811211763] [2024-10-13 16:50:02,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:02,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:02,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:02,342 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:50:02,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 16:50:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:02,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 16:50:02,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:02,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:02,482 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:02,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811211763] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:02,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:02,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-13 16:50:02,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793116556] [2024-10-13 16:50:02,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:02,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 16:50:02,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:02,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 16:50:02,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-13 16:50:02,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-10-13 16:50:02,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 59 transitions, 428 flow. Second operand has 13 states, 13 states have (on average 14.153846153846153) internal successors, (184), 13 states have internal predecessors, (184), 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 16:50:02,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:02,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-10-13 16:50:02,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:03,312 INFO L124 PetriNetUnfolderBase]: 3284/7520 cut-off events. [2024-10-13 16:50:03,312 INFO L125 PetriNetUnfolderBase]: For 27683/28085 co-relation queries the response was YES. [2024-10-13 16:50:03,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26870 conditions, 7520 events. 3284/7520 cut-off events. For 27683/28085 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 57444 event pairs, 275 based on Foata normal form. 220/7702 useless extension candidates. Maximal degree in co-relation 26186. Up to 1303 conditions per place. [2024-10-13 16:50:03,352 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 210 selfloop transitions, 45 changer transitions 4/275 dead transitions. [2024-10-13 16:50:03,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 275 transitions, 2301 flow [2024-10-13 16:50:03,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 16:50:03,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 16:50:03,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 278 transitions. [2024-10-13 16:50:03,354 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7239583333333334 [2024-10-13 16:50:03,354 INFO L175 Difference]: Start difference. First operand has 76 places, 59 transitions, 428 flow. Second operand 12 states and 278 transitions. [2024-10-13 16:50:03,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 275 transitions, 2301 flow [2024-10-13 16:50:03,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 275 transitions, 2200 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-10-13 16:50:03,383 INFO L231 Difference]: Finished difference. Result has 94 places, 91 transitions, 921 flow [2024-10-13 16:50:03,383 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=921, PETRI_PLACES=94, PETRI_TRANSITIONS=91} [2024-10-13 16:50:03,384 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 61 predicate places. [2024-10-13 16:50:03,384 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 91 transitions, 921 flow [2024-10-13 16:50:03,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.153846153846153) internal successors, (184), 13 states have internal predecessors, (184), 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 16:50:03,384 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:03,384 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-10-13 16:50:03,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 16:50:03,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:03,585 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-13 16:50:03,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:03,586 INFO L85 PathProgramCache]: Analyzing trace with hash 801205761, now seen corresponding path program 2 times [2024-10-13 16:50:03,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:03,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206623460] [2024-10-13 16:50:03,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:03,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:03,725 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:03,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:03,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206623460] [2024-10-13 16:50:03,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206623460] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:03,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454931636] [2024-10-13 16:50:03,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:50:03,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:03,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:03,727 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:50:03,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 16:50:03,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:50:03,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:50:03,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:50:03,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:03,811 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-13 16:50:03,811 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-13 16:50:03,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454931636] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:03,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:03,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-10-13 16:50:03,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025703690] [2024-10-13 16:50:03,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:03,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 16:50:03,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:03,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 16:50:03,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-13 16:50:03,888 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-13 16:50:03,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 91 transitions, 921 flow. Second operand has 15 states, 15 states have (on average 10.266666666666667) internal successors, (154), 15 states have internal predecessors, (154), 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 16:50:03,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:03,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-13 16:50:03,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:05,131 INFO L124 PetriNetUnfolderBase]: 5579/10427 cut-off events. [2024-10-13 16:50:05,131 INFO L125 PetriNetUnfolderBase]: For 49612/49999 co-relation queries the response was YES. [2024-10-13 16:50:05,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39926 conditions, 10427 events. 5579/10427 cut-off events. For 49612/49999 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 72527 event pairs, 645 based on Foata normal form. 492/10907 useless extension candidates. Maximal degree in co-relation 35926. Up to 2949 conditions per place. [2024-10-13 16:50:05,183 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 362 selfloop transitions, 16 changer transitions 1/388 dead transitions. [2024-10-13 16:50:05,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 388 transitions, 4461 flow [2024-10-13 16:50:05,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 16:50:05,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 16:50:05,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 246 transitions. [2024-10-13 16:50:05,185 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-10-13 16:50:05,185 INFO L175 Difference]: Start difference. First operand has 94 places, 91 transitions, 921 flow. Second operand 15 states and 246 transitions. [2024-10-13 16:50:05,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 388 transitions, 4461 flow [2024-10-13 16:50:05,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 388 transitions, 4034 flow, removed 174 selfloop flow, removed 6 redundant places. [2024-10-13 16:50:05,232 INFO L231 Difference]: Finished difference. Result has 104 places, 94 transitions, 871 flow [2024-10-13 16:50:05,233 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=871, PETRI_PLACES=104, PETRI_TRANSITIONS=94} [2024-10-13 16:50:05,233 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 71 predicate places. [2024-10-13 16:50:05,233 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 94 transitions, 871 flow [2024-10-13 16:50:05,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.266666666666667) internal successors, (154), 15 states have internal predecessors, (154), 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 16:50:05,234 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:05,234 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:50:05,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 16:50:05,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-13 16:50:05,435 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-13 16:50:05,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:05,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1831056283, now seen corresponding path program 2 times [2024-10-13 16:50:05,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:05,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429005068] [2024-10-13 16:50:05,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:05,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:05,552 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:50:05,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:05,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429005068] [2024-10-13 16:50:05,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429005068] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:05,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101549929] [2024-10-13 16:50:05,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:50:05,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:05,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:05,554 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:50:05,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 16:50:05,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:50:05,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:50:05,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:50:05,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:05,722 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-13 16:50:05,723 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:05,783 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-13 16:50:05,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101549929] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:05,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:05,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-10-13 16:50:05,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613102616] [2024-10-13 16:50:05,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:05,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 16:50:05,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:05,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 16:50:05,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-13 16:50:05,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-10-13 16:50:05,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 94 transitions, 871 flow. Second operand has 15 states, 15 states have (on average 11.4) internal successors, (171), 15 states have internal predecessors, (171), 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 16:50:05,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:05,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-10-13 16:50:05,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:07,247 INFO L124 PetriNetUnfolderBase]: 7053/13297 cut-off events. [2024-10-13 16:50:07,247 INFO L125 PetriNetUnfolderBase]: For 65482/67012 co-relation queries the response was YES. [2024-10-13 16:50:07,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51026 conditions, 13297 events. 7053/13297 cut-off events. For 65482/67012 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 96243 event pairs, 460 based on Foata normal form. 1012/14277 useless extension candidates. Maximal degree in co-relation 41227. Up to 2545 conditions per place. [2024-10-13 16:50:07,409 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 536 selfloop transitions, 21 changer transitions 39/606 dead transitions. [2024-10-13 16:50:07,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 606 transitions, 7604 flow [2024-10-13 16:50:07,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 16:50:07,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 16:50:07,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 239 transitions. [2024-10-13 16:50:07,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4979166666666667 [2024-10-13 16:50:07,411 INFO L175 Difference]: Start difference. First operand has 104 places, 94 transitions, 871 flow. Second operand 15 states and 239 transitions. [2024-10-13 16:50:07,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 606 transitions, 7604 flow [2024-10-13 16:50:07,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 606 transitions, 7380 flow, removed 52 selfloop flow, removed 14 redundant places. [2024-10-13 16:50:07,480 INFO L231 Difference]: Finished difference. Result has 104 places, 95 transitions, 873 flow [2024-10-13 16:50:07,481 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=873, PETRI_PLACES=104, PETRI_TRANSITIONS=95} [2024-10-13 16:50:07,481 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 71 predicate places. [2024-10-13 16:50:07,481 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 95 transitions, 873 flow [2024-10-13 16:50:07,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.4) internal successors, (171), 15 states have internal predecessors, (171), 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 16:50:07,482 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:07,482 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2024-10-13 16:50:07,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-13 16:50:07,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-13 16:50:07,683 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-13 16:50:07,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:07,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1392323252, now seen corresponding path program 2 times [2024-10-13 16:50:07,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:07,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375630937] [2024-10-13 16:50:07,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:07,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:07,808 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:07,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:07,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375630937] [2024-10-13 16:50:07,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375630937] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:07,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261032699] [2024-10-13 16:50:07,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:50:07,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:07,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:07,810 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:50:07,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 16:50:07,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:50:07,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:50:07,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 16:50:07,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:07,909 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:07,910 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:08,096 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:08,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261032699] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:08,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:08,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-10-13 16:50:08,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63914209] [2024-10-13 16:50:08,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:08,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-13 16:50:08,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:08,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-13 16:50:08,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-13 16:50:08,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-10-13 16:50:08,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 95 transitions, 873 flow. Second operand has 25 states, 25 states have (on average 14.08) internal successors, (352), 25 states have internal predecessors, (352), 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 16:50:08,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:08,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-10-13 16:50:08,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:10,101 INFO L124 PetriNetUnfolderBase]: 8201/19221 cut-off events. [2024-10-13 16:50:10,101 INFO L125 PetriNetUnfolderBase]: For 127846/129504 co-relation queries the response was YES. [2024-10-13 16:50:10,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73456 conditions, 19221 events. 8201/19221 cut-off events. For 127846/129504 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 160245 event pairs, 417 based on Foata normal form. 598/19804 useless extension candidates. Maximal degree in co-relation 72328. Up to 3487 conditions per place. [2024-10-13 16:50:10,215 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 443 selfloop transitions, 205 changer transitions 0/666 dead transitions. [2024-10-13 16:50:10,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 666 transitions, 6615 flow [2024-10-13 16:50:10,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-13 16:50:10,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-13 16:50:10,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 520 transitions. [2024-10-13 16:50:10,217 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6770833333333334 [2024-10-13 16:50:10,218 INFO L175 Difference]: Start difference. First operand has 104 places, 95 transitions, 873 flow. Second operand 24 states and 520 transitions. [2024-10-13 16:50:10,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 666 transitions, 6615 flow [2024-10-13 16:50:10,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 666 transitions, 5768 flow, removed 118 selfloop flow, removed 15 redundant places. [2024-10-13 16:50:10,300 INFO L231 Difference]: Finished difference. Result has 131 places, 255 transitions, 3309 flow [2024-10-13 16:50:10,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3309, PETRI_PLACES=131, PETRI_TRANSITIONS=255} [2024-10-13 16:50:10,300 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 98 predicate places. [2024-10-13 16:50:10,300 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 255 transitions, 3309 flow [2024-10-13 16:50:10,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 14.08) internal successors, (352), 25 states have internal predecessors, (352), 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 16:50:10,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:10,301 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1] [2024-10-13 16:50:10,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 16:50:10,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-13 16:50:10,502 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-13 16:50:10,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:10,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1982511884, now seen corresponding path program 3 times [2024-10-13 16:50:10,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:10,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390749935] [2024-10-13 16:50:10,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:10,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:11,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:11,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:11,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390749935] [2024-10-13 16:50:11,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390749935] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:11,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080173051] [2024-10-13 16:50:11,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 16:50:11,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:11,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:11,111 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:50:11,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 16:50:11,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-10-13 16:50:11,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:50:11,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-13 16:50:11,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:11,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:11,325 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:11,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:11,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080173051] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:11,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:11,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2024-10-13 16:50:11,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62795273] [2024-10-13 16:50:11,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:11,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-13 16:50:11,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:11,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-13 16:50:11,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-10-13 16:50:11,897 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-10-13 16:50:11,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 255 transitions, 3309 flow. Second operand has 49 states, 49 states have (on average 14.040816326530612) internal successors, (688), 49 states have internal predecessors, (688), 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 16:50:11,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:11,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-10-13 16:50:11,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:50:20,894 INFO L124 PetriNetUnfolderBase]: 22071/51607 cut-off events. [2024-10-13 16:50:20,894 INFO L125 PetriNetUnfolderBase]: For 825581/828909 co-relation queries the response was YES. [2024-10-13 16:50:21,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191186 conditions, 51607 events. 22071/51607 cut-off events. For 825581/828909 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 459882 event pairs, 1397 based on Foata normal form. 1520/53112 useless extension candidates. Maximal degree in co-relation 188988. Up to 8679 conditions per place. [2024-10-13 16:50:21,301 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 875 selfloop transitions, 821 changer transitions 0/1714 dead transitions. [2024-10-13 16:50:21,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 1714 transitions, 19099 flow [2024-10-13 16:50:21,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-10-13 16:50:21,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-10-13 16:50:21,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 1048 transitions. [2024-10-13 16:50:21,304 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6822916666666666 [2024-10-13 16:50:21,304 INFO L175 Difference]: Start difference. First operand has 131 places, 255 transitions, 3309 flow. Second operand 48 states and 1048 transitions. [2024-10-13 16:50:21,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 1714 transitions, 19099 flow [2024-10-13 16:50:21,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 1714 transitions, 17151 flow, removed 951 selfloop flow, removed 4 redundant places. [2024-10-13 16:50:21,754 INFO L231 Difference]: Finished difference. Result has 219 places, 871 transitions, 12965 flow [2024-10-13 16:50:21,754 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3075, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=12965, PETRI_PLACES=219, PETRI_TRANSITIONS=871} [2024-10-13 16:50:21,754 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 186 predicate places. [2024-10-13 16:50:21,754 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 871 transitions, 12965 flow [2024-10-13 16:50:21,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 14.040816326530612) internal successors, (688), 49 states have internal predecessors, (688), 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 16:50:21,755 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:50:21,755 INFO L204 CegarLoopForPetriNet]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1] [2024-10-13 16:50:21,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-13 16:50:21,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 16:50:21,956 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-10-13 16:50:21,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:50:21,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1724589708, now seen corresponding path program 4 times [2024-10-13 16:50:21,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:50:21,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733357159] [2024-10-13 16:50:21,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:50:21,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:50:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:50:23,417 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:23,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:50:23,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733357159] [2024-10-13 16:50:23,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733357159] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:50:23,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655616797] [2024-10-13 16:50:23,418 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 16:50:23,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:50:23,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:50:23,419 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:50:23,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 16:50:23,534 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 16:50:23,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:50:23,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-10-13 16:50:23,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:50:23,777 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:23,777 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:50:25,916 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:50:25,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655616797] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:50:25,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:50:25,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2024-10-13 16:50:25,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529803495] [2024-10-13 16:50:25,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:50:25,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-10-13 16:50:25,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:50:25,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-10-13 16:50:25,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-10-13 16:50:25,921 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-10-13 16:50:25,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 871 transitions, 12965 flow. Second operand has 97 states, 97 states have (on average 14.02061855670103) internal successors, (1360), 97 states have internal predecessors, (1360), 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 16:50:25,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:50:25,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-10-13 16:50:25,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand