./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f 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/parallel-misc-5.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 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:23:55,785 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:23:55,837 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:23:55,841 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:23:55,841 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:23:55,859 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:23:55,859 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:23:55,859 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:23:55,860 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:23:55,860 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:23:55,860 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:23:55,860 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:23:55,861 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:23:55,861 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:23:55,861 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:23:55,861 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:23:55,861 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:23:55,862 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:23:55,862 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:23:55,862 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:23:55,862 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:23:55,862 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:23:55,863 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:23:55,863 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:23:55,863 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:23:55,863 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:23:55,863 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:23:55,863 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:23:55,864 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:23:55,864 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:23:55,864 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:23:55,864 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:23:55,864 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:23:55,864 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:23:55,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:23:55,865 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:23:55,865 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:23:55,865 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:23:55,865 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:23:55,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:23:55,866 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:23:55,866 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:23:55,866 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:23:55,866 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:23:55,866 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f [2024-11-10 22:23:56,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:23:56,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:23:56,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:23:56,076 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:23:56,077 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:23:56,078 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2024-11-10 22:23:57,241 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:23:57,391 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:23:57,391 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2024-11-10 22:23:57,397 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec0f18f4d/9b16fe578a7c4fc8964430a4c219fe87/FLAGec87fbd4e [2024-11-10 22:23:57,813 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec0f18f4d/9b16fe578a7c4fc8964430a4c219fe87 [2024-11-10 22:23:57,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:23:57,816 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:23:57,817 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:23:57,817 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:23:57,826 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:23:57,826 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:23:57" (1/1) ... [2024-11-10 22:23:57,827 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@429fd1e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:57, skipping insertion in model container [2024-11-10 22:23:57,827 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:23:57" (1/1) ... [2024-11-10 22:23:57,844 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:23:58,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:23:58,041 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:23:58,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:23:58,107 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:23:58,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58 WrapperNode [2024-11-10 22:23:58,108 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:23:58,110 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:23:58,110 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:23:58,110 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:23:58,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,124 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,147 INFO L138 Inliner]: procedures = 21, calls = 31, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 151 [2024-11-10 22:23:58,147 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:23:58,148 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:23:58,148 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:23:58,148 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:23:58,159 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,162 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,171 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]. [2024-11-10 22:23:58,172 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,175 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,176 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,176 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,177 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,179 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:23:58,180 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:23:58,184 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:23:58,186 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:23:58,187 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (1/1) ... [2024-11-10 22:23:58,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:23:58,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:58,209 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) [2024-11-10 22:23:58,211 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 [2024-11-10 22:23:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:23:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:23:58,243 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:23:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:23:58,243 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:23:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 22:23:58,243 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 22:23:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:23:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 22:23:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 22:23:58,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:23:58,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:23:58,245 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:23:58,315 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:23:58,316 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:23:58,490 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:23:58,490 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:23:58,668 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:23:58,668 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:23:58,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:23:58 BoogieIcfgContainer [2024-11-10 22:23:58,668 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:23:58,671 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:23:58,671 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:23:58,674 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:23:58,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:23:57" (1/3) ... [2024-11-10 22:23:58,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b32d7c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:23:58, skipping insertion in model container [2024-11-10 22:23:58,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:58" (2/3) ... [2024-11-10 22:23:58,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b32d7c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:23:58, skipping insertion in model container [2024-11-10 22:23:58,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:23:58" (3/3) ... [2024-11-10 22:23:58,678 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2024-11-10 22:23:58,691 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:23:58,692 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-11-10 22:23:58,692 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:23:58,744 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 22:23:58,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 57 transitions, 135 flow [2024-11-10 22:23:58,808 INFO L124 PetriNetUnfolderBase]: 6/54 cut-off events. [2024-11-10 22:23:58,808 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 22:23:58,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 54 events. 6/54 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 175 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2024-11-10 22:23:58,814 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 57 transitions, 135 flow [2024-11-10 22:23:58,817 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 51 transitions, 114 flow [2024-11-10 22:23:58,827 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:23:58,832 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;@71facca9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:23:58,832 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2024-11-10 22:23:58,839 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:23:58,840 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2024-11-10 22:23:58,840 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 22:23:58,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:58,840 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:58,841 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-10 22:23:58,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:58,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1857734786, now seen corresponding path program 1 times [2024-11-10 22:23:58,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:58,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994425399] [2024-11-10 22:23:58,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:58,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:59,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:59,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:59,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994425399] [2024-11-10 22:23:59,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994425399] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:59,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:59,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:23:59,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933391738] [2024-11-10 22:23:59,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:59,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:23:59,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:59,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:23:59,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:23:59,119 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2024-11-10 22:23:59,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-11-10 22:23:59,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:59,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2024-11-10 22:23:59,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:59,720 INFO L124 PetriNetUnfolderBase]: 4699/6793 cut-off events. [2024-11-10 22:23:59,720 INFO L125 PetriNetUnfolderBase]: For 358/358 co-relation queries the response was YES. [2024-11-10 22:23:59,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14006 conditions, 6793 events. 4699/6793 cut-off events. For 358/358 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 37969 event pairs, 854 based on Foata normal form. 330/4835 useless extension candidates. Maximal degree in co-relation 13585. Up to 5774 conditions per place. [2024-11-10 22:23:59,761 INFO L140 encePairwiseOnDemand]: 34/57 looper letters, 57 selfloop transitions, 11 changer transitions 0/75 dead transitions. [2024-11-10 22:23:59,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 75 transitions, 307 flow [2024-11-10 22:23:59,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:23:59,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:23:59,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-11-10 22:23:59,772 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-10 22:23:59,774 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 114 flow. Second operand 3 states and 114 transitions. [2024-11-10 22:23:59,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 75 transitions, 307 flow [2024-11-10 22:23:59,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 75 transitions, 297 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:23:59,784 INFO L231 Difference]: Finished difference. Result has 52 places, 57 transitions, 189 flow [2024-11-10 22:23:59,786 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=52, PETRI_TRANSITIONS=57} [2024-11-10 22:23:59,789 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, -3 predicate places. [2024-11-10 22:23:59,790 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 57 transitions, 189 flow [2024-11-10 22:23:59,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-11-10 22:23:59,790 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:59,790 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:59,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:23:59,791 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-10 22:23:59,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:59,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1857734784, now seen corresponding path program 1 times [2024-11-10 22:23:59,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:59,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694911245] [2024-11-10 22:23:59,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:59,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:59,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:59,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694911245] [2024-11-10 22:23:59,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694911245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:59,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:59,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:23:59,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337805782] [2024-11-10 22:23:59,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:59,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:23:59,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:59,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:23:59,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:23:59,902 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2024-11-10 22:23:59,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 57 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-11-10 22:23:59,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:59,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2024-11-10 22:23:59,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:00,475 INFO L124 PetriNetUnfolderBase]: 6170/9111 cut-off events. [2024-11-10 22:24:00,476 INFO L125 PetriNetUnfolderBase]: For 323/323 co-relation queries the response was YES. [2024-11-10 22:24:00,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22197 conditions, 9111 events. 6170/9111 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 55585 event pairs, 3011 based on Foata normal form. 154/6292 useless extension candidates. Maximal degree in co-relation 17844. Up to 5090 conditions per place. [2024-11-10 22:24:00,524 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 73 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2024-11-10 22:24:00,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 83 transitions, 410 flow [2024-11-10 22:24:00,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:24:00,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:24:00,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-11-10 22:24:00,526 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6198830409356725 [2024-11-10 22:24:00,526 INFO L175 Difference]: Start difference. First operand has 52 places, 57 transitions, 189 flow. Second operand 3 states and 106 transitions. [2024-11-10 22:24:00,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 83 transitions, 410 flow [2024-11-10 22:24:00,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 83 transitions, 403 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:24:00,529 INFO L231 Difference]: Finished difference. Result has 54 places, 54 transitions, 189 flow [2024-11-10 22:24:00,530 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=54, PETRI_TRANSITIONS=54} [2024-11-10 22:24:00,530 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2024-11-10 22:24:00,530 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 54 transitions, 189 flow [2024-11-10 22:24:00,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-11-10 22:24:00,530 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:00,531 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:00,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 22:24:00,531 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-10 22:24:00,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:00,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1802867412, now seen corresponding path program 1 times [2024-11-10 22:24:00,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:00,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586659257] [2024-11-10 22:24:00,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:00,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:00,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:00,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:00,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586659257] [2024-11-10 22:24:00,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586659257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:24:00,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:24:00,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:24:00,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789911101] [2024-11-10 22:24:00,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:00,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:24:00,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:00,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:24:00,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:24:00,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2024-11-10 22:24:00,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 54 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-11-10 22:24:00,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:00,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2024-11-10 22:24:00,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:01,288 INFO L124 PetriNetUnfolderBase]: 7604/11514 cut-off events. [2024-11-10 22:24:01,289 INFO L125 PetriNetUnfolderBase]: For 1076/1076 co-relation queries the response was YES. [2024-11-10 22:24:01,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28781 conditions, 11514 events. 7604/11514 cut-off events. For 1076/1076 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 73291 event pairs, 2457 based on Foata normal form. 158/8408 useless extension candidates. Maximal degree in co-relation 24863. Up to 7470 conditions per place. [2024-11-10 22:24:01,338 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 68 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-11-10 22:24:01,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 78 transitions, 412 flow [2024-11-10 22:24:01,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:24:01,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:24:01,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-11-10 22:24:01,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6081871345029239 [2024-11-10 22:24:01,340 INFO L175 Difference]: Start difference. First operand has 54 places, 54 transitions, 189 flow. Second operand 3 states and 104 transitions. [2024-11-10 22:24:01,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 78 transitions, 412 flow [2024-11-10 22:24:01,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 78 transitions, 409 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:24:01,343 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 197 flow [2024-11-10 22:24:01,343 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-11-10 22:24:01,343 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 1 predicate places. [2024-11-10 22:24:01,344 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 197 flow [2024-11-10 22:24:01,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-11-10 22:24:01,344 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:01,344 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:01,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 22:24:01,344 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-10 22:24:01,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:01,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1097356539, now seen corresponding path program 1 times [2024-11-10 22:24:01,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:01,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774576088] [2024-11-10 22:24:01,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:01,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:01,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:01,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:01,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774576088] [2024-11-10 22:24:01,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774576088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:01,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666809831] [2024-11-10 22:24:01,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:01,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:01,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:01,456 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) [2024-11-10 22:24:01,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:24:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:01,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:24:01,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:01,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:01,560 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:24:01,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666809831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:24:01,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:24:01,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-10 22:24:01,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363590111] [2024-11-10 22:24:01,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:01,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:24:01,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:01,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:24:01,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-10 22:24:01,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2024-11-10 22:24:01,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 197 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-11-10 22:24:01,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:01,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2024-11-10 22:24:01,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:02,512 INFO L124 PetriNetUnfolderBase]: 11149/16779 cut-off events. [2024-11-10 22:24:02,512 INFO L125 PetriNetUnfolderBase]: For 2758/2758 co-relation queries the response was YES. [2024-11-10 22:24:02,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43842 conditions, 16779 events. 11149/16779 cut-off events. For 2758/2758 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 108576 event pairs, 4981 based on Foata normal form. 0/12889 useless extension candidates. Maximal degree in co-relation 38023. Up to 9778 conditions per place. [2024-11-10 22:24:02,605 INFO L140 encePairwiseOnDemand]: 38/57 looper letters, 61 selfloop transitions, 17 changer transitions 0/85 dead transitions. [2024-11-10 22:24:02,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 85 transitions, 483 flow [2024-11-10 22:24:02,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:24:02,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:24:02,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-11-10 22:24:02,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229 [2024-11-10 22:24:02,607 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 197 flow. Second operand 4 states and 118 transitions. [2024-11-10 22:24:02,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 85 transitions, 483 flow [2024-11-10 22:24:02,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 85 transitions, 479 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:24:02,611 INFO L231 Difference]: Finished difference. Result has 58 places, 65 transitions, 381 flow [2024-11-10 22:24:02,611 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=381, PETRI_PLACES=58, PETRI_TRANSITIONS=65} [2024-11-10 22:24:02,612 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-11-10 22:24:02,612 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 65 transitions, 381 flow [2024-11-10 22:24:02,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-11-10 22:24:02,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:02,613 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:02,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 22:24:02,817 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 [2024-11-10 22:24:02,818 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-10 22:24:02,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:02,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1097356540, now seen corresponding path program 1 times [2024-11-10 22:24:02,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:02,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713573444] [2024-11-10 22:24:02,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:02,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:02,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:02,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:03,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713573444] [2024-11-10 22:24:03,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713573444] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:03,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685880627] [2024-11-10 22:24:03,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:03,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:03,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:03,002 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) [2024-11-10 22:24:03,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:24:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:03,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:24:03,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:03,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:03,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:24:03,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:03,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685880627] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:24:03,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:24:03,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2024-11-10 22:24:03,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588534975] [2024-11-10 22:24:03,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:24:03,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:24:03,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:03,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:24:03,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-10 22:24:03,111 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2024-11-10 22:24:03,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 65 transitions, 381 flow. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 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) [2024-11-10 22:24:03,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:03,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2024-11-10 22:24:03,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:05,287 INFO L124 PetriNetUnfolderBase]: 25725/38812 cut-off events. [2024-11-10 22:24:05,288 INFO L125 PetriNetUnfolderBase]: For 33199/33199 co-relation queries the response was YES. [2024-11-10 22:24:05,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115451 conditions, 38812 events. 25725/38812 cut-off events. For 33199/33199 co-relation queries the response was YES. Maximal size of possible extension queue 1076. Compared 271635 event pairs, 1371 based on Foata normal form. 2563/33172 useless extension candidates. Maximal degree in co-relation 98545. Up to 15158 conditions per place. [2024-11-10 22:24:05,477 INFO L140 encePairwiseOnDemand]: 40/57 looper letters, 149 selfloop transitions, 51 changer transitions 0/207 dead transitions. [2024-11-10 22:24:05,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 207 transitions, 1525 flow [2024-11-10 22:24:05,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:24:05,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:24:05,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 224 transitions. [2024-11-10 22:24:05,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6549707602339181 [2024-11-10 22:24:05,482 INFO L175 Difference]: Start difference. First operand has 58 places, 65 transitions, 381 flow. Second operand 6 states and 224 transitions. [2024-11-10 22:24:05,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 207 transitions, 1525 flow [2024-11-10 22:24:05,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 207 transitions, 1432 flow, removed 46 selfloop flow, removed 1 redundant places. [2024-11-10 22:24:05,498 INFO L231 Difference]: Finished difference. Result has 65 places, 113 transitions, 1002 flow [2024-11-10 22:24:05,499 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1002, PETRI_PLACES=65, PETRI_TRANSITIONS=113} [2024-11-10 22:24:05,501 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2024-11-10 22:24:05,501 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 113 transitions, 1002 flow [2024-11-10 22:24:05,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 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) [2024-11-10 22:24:05,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:05,501 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:05,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 22:24:05,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:05,703 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-10 22:24:05,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:05,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1097356541, now seen corresponding path program 1 times [2024-11-10 22:24:05,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:05,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719290391] [2024-11-10 22:24:05,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:05,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:05,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:05,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:05,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:05,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719290391] [2024-11-10 22:24:05,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719290391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:24:05,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:24:05,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:24:05,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109259906] [2024-11-10 22:24:05,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:05,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:24:05,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:05,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:24:05,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:24:05,743 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2024-11-10 22:24:05,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 113 transitions, 1002 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) [2024-11-10 22:24:05,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:05,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2024-11-10 22:24:05,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:08,239 INFO L124 PetriNetUnfolderBase]: 24358/36945 cut-off events. [2024-11-10 22:24:08,240 INFO L125 PetriNetUnfolderBase]: For 50567/50567 co-relation queries the response was YES. [2024-11-10 22:24:08,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118174 conditions, 36945 events. 24358/36945 cut-off events. For 50567/50567 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 264091 event pairs, 17901 based on Foata normal form. 0/30374 useless extension candidates. Maximal degree in co-relation 100193. Up to 34528 conditions per place. [2024-11-10 22:24:08,644 INFO L140 encePairwiseOnDemand]: 55/57 looper letters, 98 selfloop transitions, 1 changer transitions 0/106 dead transitions. [2024-11-10 22:24:08,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 106 transitions, 1121 flow [2024-11-10 22:24:08,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:24:08,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:24:08,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-11-10 22:24:08,646 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39766081871345027 [2024-11-10 22:24:08,646 INFO L175 Difference]: Start difference. First operand has 65 places, 113 transitions, 1002 flow. Second operand 3 states and 68 transitions. [2024-11-10 22:24:08,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 106 transitions, 1121 flow [2024-11-10 22:24:08,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 106 transitions, 1082 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-11-10 22:24:08,886 INFO L231 Difference]: Finished difference. Result has 65 places, 106 transitions, 886 flow [2024-11-10 22:24:08,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=886, PETRI_PLACES=65, PETRI_TRANSITIONS=106} [2024-11-10 22:24:08,887 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2024-11-10 22:24:08,887 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 106 transitions, 886 flow [2024-11-10 22:24:08,888 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) [2024-11-10 22:24:08,888 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:08,888 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:08,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:24:08,888 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-10 22:24:08,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:08,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1097356542, now seen corresponding path program 1 times [2024-11-10 22:24:08,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:08,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090169605] [2024-11-10 22:24:08,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:08,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:08,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:08,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:08,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090169605] [2024-11-10 22:24:08,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090169605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:08,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490634006] [2024-11-10 22:24:08,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:08,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:08,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:08,940 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:24:08,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:24:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:08,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:24:08,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:09,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:09,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:24:09,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:09,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490634006] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:24:09,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:24:09,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-11-10 22:24:09,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939596816] [2024-11-10 22:24:09,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:24:09,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 22:24:09,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:09,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 22:24:09,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:24:09,093 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2024-11-10 22:24:09,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 106 transitions, 886 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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) [2024-11-10 22:24:09,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:09,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2024-11-10 22:24:09,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:14,892 INFO L124 PetriNetUnfolderBase]: 60912/93333 cut-off events. [2024-11-10 22:24:14,893 INFO L125 PetriNetUnfolderBase]: For 143292/143292 co-relation queries the response was YES. [2024-11-10 22:24:15,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291553 conditions, 93333 events. 60912/93333 cut-off events. For 143292/143292 co-relation queries the response was YES. Maximal size of possible extension queue 2831. Compared 748950 event pairs, 3798 based on Foata normal form. 912/78958 useless extension candidates. Maximal degree in co-relation 291534. Up to 18381 conditions per place. [2024-11-10 22:24:15,481 INFO L140 encePairwiseOnDemand]: 41/57 looper letters, 343 selfloop transitions, 123 changer transitions 0/473 dead transitions. [2024-11-10 22:24:15,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 473 transitions, 4434 flow [2024-11-10 22:24:15,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:24:15,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:24:15,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 387 transitions. [2024-11-10 22:24:15,483 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6789473684210526 [2024-11-10 22:24:15,483 INFO L175 Difference]: Start difference. First operand has 65 places, 106 transitions, 886 flow. Second operand 10 states and 387 transitions. [2024-11-10 22:24:15,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 473 transitions, 4434 flow [2024-11-10 22:24:15,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 473 transitions, 4433 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:24:15,900 INFO L231 Difference]: Finished difference. Result has 80 places, 228 transitions, 2854 flow [2024-11-10 22:24:15,900 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2854, PETRI_PLACES=80, PETRI_TRANSITIONS=228} [2024-11-10 22:24:15,900 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2024-11-10 22:24:15,900 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 228 transitions, 2854 flow [2024-11-10 22:24:15,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 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) [2024-11-10 22:24:15,901 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:15,901 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:15,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:24:16,105 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 [2024-11-10 22:24:16,106 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-11-10 22:24:16,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:16,107 INFO L85 PathProgramCache]: Analyzing trace with hash 415303142, now seen corresponding path program 1 times [2024-11-10 22:24:16,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:16,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006581530] [2024-11-10 22:24:16,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:16,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:16,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:16,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:16,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006581530] [2024-11-10 22:24:16,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006581530] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:16,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904434714] [2024-11-10 22:24:16,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:16,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:16,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:16,161 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:24:16,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:24:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:16,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:24:16,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:16,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:16,229 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:24:16,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:16,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904434714] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:24:16,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:24:16,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2024-11-10 22:24:16,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133080009] [2024-11-10 22:24:16,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:24:16,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:24:16,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:16,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:24:16,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-10 22:24:16,256 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2024-11-10 22:24:16,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 228 transitions, 2854 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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) [2024-11-10 22:24:16,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:16,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2024-11-10 22:24:16,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:35,480 INFO L124 PetriNetUnfolderBase]: 146637/224720 cut-off events. [2024-11-10 22:24:35,480 INFO L125 PetriNetUnfolderBase]: For 753272/753272 co-relation queries the response was YES. [2024-11-10 22:24:36,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 779059 conditions, 224720 events. 146637/224720 cut-off events. For 753272/753272 co-relation queries the response was YES. Maximal size of possible extension queue 5223. Compared 1936498 event pairs, 35449 based on Foata normal form. 2335/197897 useless extension candidates. Maximal degree in co-relation 779032. Up to 48053 conditions per place.