./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-difference-det.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 74892b4fb04a6fe0e809c110df08d9da57c5c90ea65da5b04a32432686fc90f8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:06:32,023 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:06:32,085 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:06:32,094 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:06:32,095 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:06:32,124 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:06:32,125 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:06:32,126 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:06:32,126 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:06:32,128 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:06:32,128 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:06:32,128 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:06:32,129 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:06:32,129 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:06:32,129 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:06:32,129 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:06:32,133 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:06:32,133 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:06:32,133 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:06:32,133 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:06:32,133 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:06:32,134 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:06:32,134 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:06:32,134 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:06:32,134 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:06:32,134 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:06:32,135 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:06:32,135 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:06:32,135 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:06:32,136 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:06:32,136 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:06:32,137 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:06:32,137 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:06:32,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:06:32,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:06:32,137 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:06:32,138 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:06:32,138 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:06:32,138 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:06:32,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:06:32,138 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:06:32,139 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:06:32,139 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:06:32,139 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:06:32,139 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74892b4fb04a6fe0e809c110df08d9da57c5c90ea65da5b04a32432686fc90f8 [2024-11-19 14:06:32,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:06:32,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:06:32,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:06:32,376 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:06:32,376 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:06:32,377 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-11-19 14:06:33,707 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:06:33,869 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:06:33,870 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-11-19 14:06:33,876 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c847afb07/00b0d817a7774c2f8fd9530ae9655a4b/FLAG766352d44 [2024-11-19 14:06:33,893 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c847afb07/00b0d817a7774c2f8fd9530ae9655a4b [2024-11-19 14:06:33,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:06:33,897 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:06:33,901 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:06:33,901 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:06:33,906 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:06:33,906 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:06:33" (1/1) ... [2024-11-19 14:06:33,907 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3994956f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:33, skipping insertion in model container [2024-11-19 14:06:33,907 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:06:33" (1/1) ... [2024-11-19 14:06:33,927 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:06:34,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:06:34,119 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:06:34,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:06:34,154 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:06:34,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:34 WrapperNode [2024-11-19 14:06:34,155 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:06:34,156 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:06:34,156 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:06:34,156 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:06:34,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:34" (1/1) ... [2024-11-19 14:06:34,168 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:34" (1/1) ... [2024-11-19 14:06:34,211 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 109 [2024-11-19 14:06:34,214 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:06:34,215 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:06:34,215 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:06:34,220 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:06:34,228 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:34" (1/1) ... [2024-11-19 14:06:34,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:34" (1/1) ... [2024-11-19 14:06:34,230 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:34" (1/1) ... [2024-11-19 14:06:34,264 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 14:06:34,264 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:34" (1/1) ... [2024-11-19 14:06:34,265 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:34" (1/1) ... [2024-11-19 14:06:34,271 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:34" (1/1) ... [2024-11-19 14:06:34,279 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:34" (1/1) ... [2024-11-19 14:06:34,280 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:34" (1/1) ... [2024-11-19 14:06:34,280 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:34" (1/1) ... [2024-11-19 14:06:34,282 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:06:34,287 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:06:34,287 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:06:34,287 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:06:34,288 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:34" (1/1) ... [2024-11-19 14:06:34,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:06:34,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:34,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 14:06:34,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 14:06:34,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:06:34,371 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:06:34,371 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:06:34,372 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:06:34,372 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:06:34,372 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 14:06:34,372 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 14:06:34,372 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-19 14:06:34,372 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-19 14:06:34,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:06:34,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:06:34,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:06:34,375 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:06:34,474 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:06:34,476 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:06:34,707 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:06:34,707 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:06:34,851 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:06:34,851 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 14:06:34,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:06:34 BoogieIcfgContainer [2024-11-19 14:06:34,852 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:06:34,853 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:06:34,854 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:06:34,856 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:06:34,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:06:33" (1/3) ... [2024-11-19 14:06:34,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51935b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:06:34, skipping insertion in model container [2024-11-19 14:06:34,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:06:34" (2/3) ... [2024-11-19 14:06:34,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51935b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:06:34, skipping insertion in model container [2024-11-19 14:06:34,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:06:34" (3/3) ... [2024-11-19 14:06:34,860 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2024-11-19 14:06:34,873 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:06:34,873 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-11-19 14:06:34,874 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:06:34,950 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-19 14:06:34,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 62 transitions, 152 flow [2024-11-19 14:06:35,027 INFO L124 PetriNetUnfolderBase]: 4/58 cut-off events. [2024-11-19 14:06:35,027 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-19 14:06:35,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 58 events. 4/58 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 165 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-11-19 14:06:35,032 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 62 transitions, 152 flow [2024-11-19 14:06:35,036 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 133 flow [2024-11-19 14:06:35,043 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:06:35,048 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;@1c6e0240, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:06:35,048 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-11-19 14:06:35,052 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:06:35,052 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-19 14:06:35,052 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:06:35,052 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:35,053 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 14:06:35,053 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:35,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:35,058 INFO L85 PathProgramCache]: Analyzing trace with hash 381490657, now seen corresponding path program 1 times [2024-11-19 14:06:35,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:35,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379807392] [2024-11-19 14:06:35,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:35,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:35,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:35,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:35,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379807392] [2024-11-19 14:06:35,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379807392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:35,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:35,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 14:06:35,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724806338] [2024-11-19 14:06:35,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:35,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:35,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:35,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:35,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:06:35,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-19 14:06:35,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:35,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:35,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-19 14:06:35,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:37,678 INFO L124 PetriNetUnfolderBase]: 26633/39270 cut-off events. [2024-11-19 14:06:37,679 INFO L125 PetriNetUnfolderBase]: For 1954/1954 co-relation queries the response was YES. [2024-11-19 14:06:37,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75644 conditions, 39270 events. 26633/39270 cut-off events. For 1954/1954 co-relation queries the response was YES. Maximal size of possible extension queue 1882. Compared 287022 event pairs, 6878 based on Foata normal form. 0/28358 useless extension candidates. Maximal degree in co-relation 69273. Up to 29555 conditions per place. [2024-11-19 14:06:37,994 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 69 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-11-19 14:06:37,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 85 transitions, 351 flow [2024-11-19 14:06:37,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:37,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:38,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2024-11-19 14:06:38,006 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6881720430107527 [2024-11-19 14:06:38,008 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 133 flow. Second operand 3 states and 128 transitions. [2024-11-19 14:06:38,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 85 transitions, 351 flow [2024-11-19 14:06:38,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 85 transitions, 327 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-19 14:06:38,043 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 136 flow [2024-11-19 14:06:38,046 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-11-19 14:06:38,049 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, -4 predicate places. [2024-11-19 14:06:38,049 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 136 flow [2024-11-19 14:06:38,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:38,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:38,049 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:38,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:06:38,050 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:38,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:38,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1540316356, now seen corresponding path program 1 times [2024-11-19 14:06:38,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:38,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245898125] [2024-11-19 14:06:38,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:38,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:38,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:38,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:38,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245898125] [2024-11-19 14:06:38,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245898125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:38,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:38,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:38,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234778671] [2024-11-19 14:06:38,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:38,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:38,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:38,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:38,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:38,175 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-19 14:06:38,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:38,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:38,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-19 14:06:38,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:40,994 INFO L124 PetriNetUnfolderBase]: 40657/59827 cut-off events. [2024-11-19 14:06:40,995 INFO L125 PetriNetUnfolderBase]: For 3180/3180 co-relation queries the response was YES. [2024-11-19 14:06:41,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119187 conditions, 59827 events. 40657/59827 cut-off events. For 3180/3180 co-relation queries the response was YES. Maximal size of possible extension queue 2731. Compared 448235 event pairs, 23154 based on Foata normal form. 1026/45634 useless extension candidates. Maximal degree in co-relation 53067. Up to 42823 conditions per place. [2024-11-19 14:06:41,410 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 104 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2024-11-19 14:06:41,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 120 transitions, 490 flow [2024-11-19 14:06:41,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:41,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:41,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 174 transitions. [2024-11-19 14:06:41,413 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7016129032258065 [2024-11-19 14:06:41,413 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 136 flow. Second operand 4 states and 174 transitions. [2024-11-19 14:06:41,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 120 transitions, 490 flow [2024-11-19 14:06:41,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 120 transitions, 488 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:41,419 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 163 flow [2024-11-19 14:06:41,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-11-19 14:06:41,419 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 0 predicate places. [2024-11-19 14:06:41,419 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 163 flow [2024-11-19 14:06:41,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:41,420 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:41,420 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:41,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 14:06:41,420 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:41,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:41,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1293827604, now seen corresponding path program 1 times [2024-11-19 14:06:41,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:41,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101163975] [2024-11-19 14:06:41,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:41,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:41,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:41,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:41,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101163975] [2024-11-19 14:06:41,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101163975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:41,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:41,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 14:06:41,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853270256] [2024-11-19 14:06:41,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:41,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:41,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:41,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:41,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:06:41,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-19 14:06:41,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:41,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:41,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-19 14:06:41,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:43,648 INFO L124 PetriNetUnfolderBase]: 34577/51753 cut-off events. [2024-11-19 14:06:43,648 INFO L125 PetriNetUnfolderBase]: For 12388/14116 co-relation queries the response was YES. [2024-11-19 14:06:43,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112209 conditions, 51753 events. 34577/51753 cut-off events. For 12388/14116 co-relation queries the response was YES. Maximal size of possible extension queue 1963. Compared 380880 event pairs, 8936 based on Foata normal form. 0/39815 useless extension candidates. Maximal degree in co-relation 56052. Up to 37724 conditions per place. [2024-11-19 14:06:44,163 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 72 selfloop transitions, 2 changer transitions 1/89 dead transitions. [2024-11-19 14:06:44,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 89 transitions, 405 flow [2024-11-19 14:06:44,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:44,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:44,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-11-19 14:06:44,168 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-19 14:06:44,169 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 163 flow. Second operand 3 states and 124 transitions. [2024-11-19 14:06:44,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 89 transitions, 405 flow [2024-11-19 14:06:44,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:44,182 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 176 flow [2024-11-19 14:06:44,182 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2024-11-19 14:06:44,183 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 2 predicate places. [2024-11-19 14:06:44,183 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 176 flow [2024-11-19 14:06:44,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:44,184 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:44,184 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:44,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 14:06:44,184 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:44,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:44,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1436676033, now seen corresponding path program 1 times [2024-11-19 14:06:44,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:44,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29239415] [2024-11-19 14:06:44,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:44,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:44,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:44,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:44,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29239415] [2024-11-19 14:06:44,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29239415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:44,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:44,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:06:44,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162687796] [2024-11-19 14:06:44,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:44,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:44,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:44,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:44,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:06:44,244 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-19 14:06:44,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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) [2024-11-19 14:06:44,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:44,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-19 14:06:44,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:46,512 INFO L124 PetriNetUnfolderBase]: 31801/47503 cut-off events. [2024-11-19 14:06:46,512 INFO L125 PetriNetUnfolderBase]: For 12756/13684 co-relation queries the response was YES. [2024-11-19 14:06:46,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108114 conditions, 47503 events. 31801/47503 cut-off events. For 12756/13684 co-relation queries the response was YES. Maximal size of possible extension queue 1789. Compared 349513 event pairs, 19145 based on Foata normal form. 0/38638 useless extension candidates. Maximal degree in co-relation 58221. Up to 29306 conditions per place. [2024-11-19 14:06:46,786 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 79 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2024-11-19 14:06:46,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 96 transitions, 444 flow [2024-11-19 14:06:46,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:46,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:46,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-11-19 14:06:46,788 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6989247311827957 [2024-11-19 14:06:46,789 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 176 flow. Second operand 3 states and 130 transitions. [2024-11-19 14:06:46,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 96 transitions, 444 flow [2024-11-19 14:06:46,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 96 transitions, 441 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:46,822 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 198 flow [2024-11-19 14:06:46,822 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2024-11-19 14:06:46,824 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 4 predicate places. [2024-11-19 14:06:46,824 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 198 flow [2024-11-19 14:06:46,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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) [2024-11-19 14:06:46,825 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:46,825 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:46,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:06:46,825 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:46,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:46,825 INFO L85 PathProgramCache]: Analyzing trace with hash 119997188, now seen corresponding path program 1 times [2024-11-19 14:06:46,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:46,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823986450] [2024-11-19 14:06:46,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:46,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:46,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:46,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:46,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823986450] [2024-11-19 14:06:46,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823986450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:46,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:46,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:06:46,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133164550] [2024-11-19 14:06:46,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:46,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:46,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:46,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:46,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:46,883 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-19 14:06:46,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:46,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:46,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-19 14:06:46,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:49,852 INFO L124 PetriNetUnfolderBase]: 37799/56541 cut-off events. [2024-11-19 14:06:49,852 INFO L125 PetriNetUnfolderBase]: For 31720/31854 co-relation queries the response was YES. [2024-11-19 14:06:49,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137235 conditions, 56541 events. 37799/56541 cut-off events. For 31720/31854 co-relation queries the response was YES. Maximal size of possible extension queue 1782. Compared 418492 event pairs, 5739 based on Foata normal form. 1533/51838 useless extension candidates. Maximal degree in co-relation 68035. Up to 24870 conditions per place. [2024-11-19 14:06:50,176 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 107 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2024-11-19 14:06:50,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 125 transitions, 598 flow [2024-11-19 14:06:50,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:50,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:50,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 180 transitions. [2024-11-19 14:06:50,178 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7258064516129032 [2024-11-19 14:06:50,178 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 198 flow. Second operand 4 states and 180 transitions. [2024-11-19 14:06:50,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 125 transitions, 598 flow [2024-11-19 14:06:50,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 125 transitions, 588 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:06:50,476 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 226 flow [2024-11-19 14:06:50,476 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2024-11-19 14:06:50,477 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 7 predicate places. [2024-11-19 14:06:50,477 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 226 flow [2024-11-19 14:06:50,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:50,477 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:50,477 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:50,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 14:06:50,478 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:50,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:50,478 INFO L85 PathProgramCache]: Analyzing trace with hash 134414718, now seen corresponding path program 1 times [2024-11-19 14:06:50,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:50,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986333399] [2024-11-19 14:06:50,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:50,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:50,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:50,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:50,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986333399] [2024-11-19 14:06:50,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986333399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:06:50,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880398252] [2024-11-19 14:06:50,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:50,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:06:50,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:06:50,518 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:06:50,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:06:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:50,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:06:50,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:06:50,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:50,608 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:06:50,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880398252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:50,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:06:50,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-19 14:06:50,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031221818] [2024-11-19 14:06:50,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:50,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:06:50,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:50,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:06:50,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 14:06:50,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-19 14:06:50,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:50,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:50,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-19 14:06:50,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:53,479 INFO L124 PetriNetUnfolderBase]: 34553/52535 cut-off events. [2024-11-19 14:06:53,480 INFO L125 PetriNetUnfolderBase]: For 42287/43129 co-relation queries the response was YES. [2024-11-19 14:06:53,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125854 conditions, 52535 events. 34553/52535 cut-off events. For 42287/43129 co-relation queries the response was YES. Maximal size of possible extension queue 1606. Compared 392471 event pairs, 29596 based on Foata normal form. 1344/47120 useless extension candidates. Maximal degree in co-relation 58632. Up to 45342 conditions per place. [2024-11-19 14:06:53,768 INFO L140 encePairwiseOnDemand]: 60/62 looper letters, 47 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2024-11-19 14:06:53,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 62 transitions, 304 flow [2024-11-19 14:06:53,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:06:53,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:06:53,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-11-19 14:06:53,770 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.510752688172043 [2024-11-19 14:06:53,770 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 226 flow. Second operand 3 states and 95 transitions. [2024-11-19 14:06:53,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 62 transitions, 304 flow [2024-11-19 14:06:53,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 62 transitions, 298 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:06:53,789 INFO L231 Difference]: Finished difference. Result has 70 places, 62 transitions, 204 flow [2024-11-19 14:06:53,790 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=70, PETRI_TRANSITIONS=62} [2024-11-19 14:06:53,790 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 5 predicate places. [2024-11-19 14:06:53,790 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 62 transitions, 204 flow [2024-11-19 14:06:53,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:53,790 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:53,790 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:53,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:06:53,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-19 14:06:53,991 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:53,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:53,992 INFO L85 PathProgramCache]: Analyzing trace with hash -2122763057, now seen corresponding path program 1 times [2024-11-19 14:06:53,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:53,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62188688] [2024-11-19 14:06:53,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:53,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:54,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:54,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:54,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62188688] [2024-11-19 14:06:54,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62188688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:54,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:54,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:54,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223738721] [2024-11-19 14:06:54,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:54,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:54,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:54,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:54,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:54,024 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-19 14:06:54,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 62 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:54,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:54,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-19 14:06:54,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:06:58,443 INFO L124 PetriNetUnfolderBase]: 53601/78333 cut-off events. [2024-11-19 14:06:58,444 INFO L125 PetriNetUnfolderBase]: For 42949/44351 co-relation queries the response was YES. [2024-11-19 14:06:58,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187265 conditions, 78333 events. 53601/78333 cut-off events. For 42949/44351 co-relation queries the response was YES. Maximal size of possible extension queue 2240. Compared 569826 event pairs, 30660 based on Foata normal form. 1448/71314 useless extension candidates. Maximal degree in co-relation 187251. Up to 56061 conditions per place. [2024-11-19 14:06:58,879 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 115 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2024-11-19 14:06:58,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 131 transitions, 696 flow [2024-11-19 14:06:58,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:06:58,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:06:58,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-19 14:06:58,880 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-11-19 14:06:58,880 INFO L175 Difference]: Start difference. First operand has 70 places, 62 transitions, 204 flow. Second operand 4 states and 164 transitions. [2024-11-19 14:06:58,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 131 transitions, 696 flow [2024-11-19 14:06:58,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 131 transitions, 695 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:06:58,917 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 232 flow [2024-11-19 14:06:58,917 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-11-19 14:06:58,917 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 9 predicate places. [2024-11-19 14:06:58,918 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 232 flow [2024-11-19 14:06:58,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:58,918 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:06:58,918 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:06:58,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 14:06:58,918 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:06:58,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:06:58,919 INFO L85 PathProgramCache]: Analyzing trace with hash -646804794, now seen corresponding path program 1 times [2024-11-19 14:06:58,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:06:58,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796017462] [2024-11-19 14:06:58,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:06:58,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:06:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:06:58,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:06:58,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:06:58,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796017462] [2024-11-19 14:06:58,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796017462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:06:58,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:06:58,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:06:58,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336363057] [2024-11-19 14:06:58,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:06:58,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:06:58,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:06:58,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:06:58,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:06:58,952 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-19 14:06:58,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:06:58,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:06:58,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-19 14:06:58,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:07:06,476 INFO L124 PetriNetUnfolderBase]: 84106/124224 cut-off events. [2024-11-19 14:07:06,477 INFO L125 PetriNetUnfolderBase]: For 87211/92335 co-relation queries the response was YES. [2024-11-19 14:07:06,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320299 conditions, 124224 events. 84106/124224 cut-off events. For 87211/92335 co-relation queries the response was YES. Maximal size of possible extension queue 3479. Compared 973110 event pairs, 49803 based on Foata normal form. 1846/112254 useless extension candidates. Maximal degree in co-relation 320283. Up to 72801 conditions per place. [2024-11-19 14:07:07,572 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 126 selfloop transitions, 4 changer transitions 0/142 dead transitions. [2024-11-19 14:07:07,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 142 transitions, 790 flow [2024-11-19 14:07:07,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:07:07,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:07:07,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2024-11-19 14:07:07,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6733870967741935 [2024-11-19 14:07:07,573 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 232 flow. Second operand 4 states and 167 transitions. [2024-11-19 14:07:07,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 142 transitions, 790 flow [2024-11-19 14:07:07,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 142 transitions, 781 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:07:07,709 INFO L231 Difference]: Finished difference. Result has 78 places, 68 transitions, 258 flow [2024-11-19 14:07:07,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=78, PETRI_TRANSITIONS=68} [2024-11-19 14:07:07,710 INFO L277 CegarLoopForPetriNet]: 65 programPoint places, 13 predicate places. [2024-11-19 14:07:07,710 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 68 transitions, 258 flow [2024-11-19 14:07:07,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:07,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:07:07,711 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 14:07:07,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 14:07:07,711 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-19 14:07:07,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:07:07,711 INFO L85 PathProgramCache]: Analyzing trace with hash 323540257, now seen corresponding path program 1 times [2024-11-19 14:07:07,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:07:07,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931059854] [2024-11-19 14:07:07,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:07,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:07:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:07,751 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:07,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:07:07,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931059854] [2024-11-19 14:07:07,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931059854] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:07:07,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310287513] [2024-11-19 14:07:07,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:07:07,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:07:07,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:07:07,753 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:07:07,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:07:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:07:07,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:07:07,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:07:07,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:07:07,819 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:07:07,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310287513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:07:07,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:07:07,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-19 14:07:07,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926599699] [2024-11-19 14:07:07,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:07:07,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:07:07,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:07:07,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:07:07,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 14:07:07,829 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 62 [2024-11-19 14:07:07,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 68 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:07:07,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:07:07,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 62 [2024-11-19 14:07:07,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand