./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 44a70169ef8abd67c211072db1308f16df00422231dd8f14aa88bc39d0b023bb --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:27:53,976 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:27:54,071 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:27:54,080 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:27:54,080 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:27:54,107 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:27:54,108 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:27:54,108 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:27:54,109 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:27:54,109 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:27:54,110 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:27:54,110 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:27:54,111 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:27:54,111 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:27:54,113 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:27:54,114 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:27:54,114 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:27:54,114 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:27:54,115 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:27:54,115 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:27:54,115 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:27:54,119 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:27:54,120 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:27:54,120 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:27:54,120 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:27:54,120 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:27:54,121 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:27:54,121 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:27:54,121 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:27:54,121 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:27:54,122 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:27:54,122 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:27:54,122 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:27:54,122 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:27:54,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:27:54,123 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:27:54,123 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:27:54,123 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:27:54,124 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:27:54,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:27:54,124 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:27:54,125 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:27:54,125 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:27:54,126 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:27:54,126 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44a70169ef8abd67c211072db1308f16df00422231dd8f14aa88bc39d0b023bb [2024-11-12 20:27:54,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:27:54,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:27:54,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:27:54,436 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:27:54,437 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:27:54,438 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i [2024-11-12 20:27:55,925 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:27:56,232 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:27:56,232 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i [2024-11-12 20:27:56,253 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/520a5b82e/85ec74cd2983435e8d721ea9801d4dc1/FLAG5df894c9d [2024-11-12 20:27:56,264 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/520a5b82e/85ec74cd2983435e8d721ea9801d4dc1 [2024-11-12 20:27:56,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:27:56,267 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:27:56,268 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:27:56,268 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:27:56,274 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:27:56,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:27:56" (1/1) ... [2024-11-12 20:27:56,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5254095d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:56, skipping insertion in model container [2024-11-12 20:27:56,275 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:27:56" (1/1) ... [2024-11-12 20:27:56,324 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:27:56,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:27:56,731 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:27:56,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:27:56,833 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:27:56,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:56 WrapperNode [2024-11-12 20:27:56,834 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:27:56,835 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:27:56,835 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:27:56,835 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:27:56,843 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:56" (1/1) ... [2024-11-12 20:27:56,860 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:56" (1/1) ... [2024-11-12 20:27:56,889 INFO L138 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 84 [2024-11-12 20:27:56,891 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:27:56,892 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:27:56,892 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:27:56,892 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:27:56,903 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:56" (1/1) ... [2024-11-12 20:27:56,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:56" (1/1) ... [2024-11-12 20:27:56,906 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:56" (1/1) ... [2024-11-12 20:27:56,935 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 5, 7]. 50 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 6]. The 0 writes are split as follows [0, 0, 0]. [2024-11-12 20:27:56,936 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:56" (1/1) ... [2024-11-12 20:27:56,938 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:56" (1/1) ... [2024-11-12 20:27:56,943 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:56" (1/1) ... [2024-11-12 20:27:56,945 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:56" (1/1) ... [2024-11-12 20:27:56,947 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:56" (1/1) ... [2024-11-12 20:27:56,948 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:56" (1/1) ... [2024-11-12 20:27:56,950 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:27:56,951 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:27:56,951 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:27:56,951 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:27:56,953 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:56" (1/1) ... [2024-11-12 20:27:56,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:27:56,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:27:56,987 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) [2024-11-12 20:27:56,990 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 [2024-11-12 20:27:57,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 20:27:57,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 20:27:57,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 20:27:57,033 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-12 20:27:57,034 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-12 20:27:57,034 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-12 20:27:57,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:27:57,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:27:57,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 20:27:57,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 20:27:57,037 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-12 20:27:57,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:27:57,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:27:57,041 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:27:57,185 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:27:57,187 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:27:57,347 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:27:57,348 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:27:57,497 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:27:57,498 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 20:27:57,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:27:57 BoogieIcfgContainer [2024-11-12 20:27:57,500 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:27:57,503 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:27:57,503 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:27:57,506 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:27:57,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:27:56" (1/3) ... [2024-11-12 20:27:57,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b82ba0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:27:57, skipping insertion in model container [2024-11-12 20:27:57,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:56" (2/3) ... [2024-11-12 20:27:57,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b82ba0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:27:57, skipping insertion in model container [2024-11-12 20:27:57,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:27:57" (3/3) ... [2024-11-12 20:27:57,512 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-zero.i [2024-11-12 20:27:57,559 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:27:57,559 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-12 20:27:57,559 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:27:57,623 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 20:27:57,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 28 transitions, 60 flow [2024-11-12 20:27:57,700 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-11-12 20:27:57,701 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:27:57,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 30 events. 4/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-11-12 20:27:57,705 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 28 transitions, 60 flow [2024-11-12 20:27:57,709 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 28 transitions, 60 flow [2024-11-12 20:27:57,724 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:27:57,733 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;@16f731cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:27:57,734 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-12 20:27:57,740 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:27:57,744 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-11-12 20:27:57,744 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:27:57,745 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:27:57,745 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-12 20:27:57,746 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:27:57,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:27:57,755 INFO L85 PathProgramCache]: Analyzing trace with hash 255457082, now seen corresponding path program 1 times [2024-11-12 20:27:57,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:27:57,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310279524] [2024-11-12 20:27:57,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:27:57,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:27:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:27:58,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:27:58,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:27:58,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310279524] [2024-11-12 20:27:58,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310279524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:27:58,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:27:58,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:27:58,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283426493] [2024-11-12 20:27:58,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:27:58,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:27:58,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:27:58,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:27:58,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:27:58,164 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2024-11-12 20:27:58,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 28 transitions, 60 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) [2024-11-12 20:27:58,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:27:58,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2024-11-12 20:27:58,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:27:58,230 INFO L124 PetriNetUnfolderBase]: 22/80 cut-off events. [2024-11-12 20:27:58,230 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:27:58,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 80 events. 22/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 227 event pairs, 2 based on Foata normal form. 6/80 useless extension candidates. Maximal degree in co-relation 120. Up to 38 conditions per place. [2024-11-12 20:27:58,235 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 13 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2024-11-12 20:27:58,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 26 transitions, 86 flow [2024-11-12 20:27:58,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:27:58,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:27:58,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-11-12 20:27:58,246 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2024-11-12 20:27:58,247 INFO L175 Difference]: Start difference. First operand has 27 places, 28 transitions, 60 flow. Second operand 3 states and 53 transitions. [2024-11-12 20:27:58,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 26 transitions, 86 flow [2024-11-12 20:27:58,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 26 transitions, 86 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:27:58,252 INFO L231 Difference]: Finished difference. Result has 27 places, 24 transitions, 56 flow [2024-11-12 20:27:58,254 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=27, PETRI_TRANSITIONS=24} [2024-11-12 20:27:58,259 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2024-11-12 20:27:58,259 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 56 flow [2024-11-12 20:27:58,259 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) [2024-11-12 20:27:58,260 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:27:58,260 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-12 20:27:58,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:27:58,260 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-11-12 20:27:58,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:27:58,261 INFO L85 PathProgramCache]: Analyzing trace with hash -670782761, now seen corresponding path program 1 times [2024-11-12 20:27:58,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:27:58,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034345787] [2024-11-12 20:27:58,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:27:58,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:27:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:27:58,281 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:27:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:27:58,312 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:27:58,313 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 20:27:58,314 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-11-12 20:27:58,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2024-11-12 20:27:58,317 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2024-11-12 20:27:58,317 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2024-11-12 20:27:58,317 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2024-11-12 20:27:58,317 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2024-11-12 20:27:58,318 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2024-11-12 20:27:58,319 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2024-11-12 20:27:58,319 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2024-11-12 20:27:58,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 20:27:58,319 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-12 20:27:58,323 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 20:27:58,323 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-12 20:27:58,352 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 20:27:58,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 51 transitions, 112 flow [2024-11-12 20:27:58,366 INFO L124 PetriNetUnfolderBase]: 8/56 cut-off events. [2024-11-12 20:27:58,366 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 20:27:58,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 56 events. 8/56 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 156 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 47. Up to 3 conditions per place. [2024-11-12 20:27:58,368 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 51 transitions, 112 flow [2024-11-12 20:27:58,370 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 51 transitions, 112 flow [2024-11-12 20:27:58,371 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:27:58,372 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;@16f731cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:27:58,372 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-12 20:27:58,376 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:27:58,377 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-12 20:27:58,378 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 20:27:58,378 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:27:58,378 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-12 20:27:58,378 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-12 20:27:58,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:27:58,379 INFO L85 PathProgramCache]: Analyzing trace with hash 304148483, now seen corresponding path program 1 times [2024-11-12 20:27:58,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:27:58,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527940048] [2024-11-12 20:27:58,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:27:58,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:27:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:27:58,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:27:58,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:27:58,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527940048] [2024-11-12 20:27:58,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527940048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:27:58,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:27:58,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:27:58,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063655317] [2024-11-12 20:27:58,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:27:58,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:27:58,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:27:58,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:27:58,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:27:58,465 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 51 [2024-11-12 20:27:58,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 51 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2024-11-12 20:27:58,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:27:58,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 51 [2024-11-12 20:27:58,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:27:58,755 INFO L124 PetriNetUnfolderBase]: 421/977 cut-off events. [2024-11-12 20:27:58,756 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-12 20:27:58,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1643 conditions, 977 events. 421/977 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5979 event pairs, 54 based on Foata normal form. 108/1004 useless extension candidates. Maximal degree in co-relation 1348. Up to 517 conditions per place. [2024-11-12 20:27:58,773 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 31 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-11-12 20:27:58,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 56 transitions, 193 flow [2024-11-12 20:27:58,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:27:58,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:27:58,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-11-12 20:27:58,778 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7254901960784313 [2024-11-12 20:27:58,778 INFO L175 Difference]: Start difference. First operand has 48 places, 51 transitions, 112 flow. Second operand 3 states and 111 transitions. [2024-11-12 20:27:58,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 56 transitions, 193 flow [2024-11-12 20:27:58,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 193 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 20:27:58,780 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 104 flow [2024-11-12 20:27:58,781 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-11-12 20:27:58,782 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2024-11-12 20:27:58,783 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 104 flow [2024-11-12 20:27:58,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2024-11-12 20:27:58,783 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:27:58,784 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-12 20:27:58,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 20:27:58,784 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-12 20:27:58,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:27:58,785 INFO L85 PathProgramCache]: Analyzing trace with hash 838668737, now seen corresponding path program 1 times [2024-11-12 20:27:58,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:27:58,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987430810] [2024-11-12 20:27:58,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:27:58,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:27:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:27:58,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:27:58,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:27:58,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987430810] [2024-11-12 20:27:58,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987430810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:27:58,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:27:58,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:27:58,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279855786] [2024-11-12 20:27:58,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:27:58,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:27:58,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:27:58,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:27:58,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:27:58,899 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 51 [2024-11-12 20:27:58,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2024-11-12 20:27:58,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:27:58,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 51 [2024-11-12 20:27:58,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:27:59,040 INFO L124 PetriNetUnfolderBase]: 372/856 cut-off events. [2024-11-12 20:27:59,040 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-12 20:27:59,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1504 conditions, 856 events. 372/856 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4952 event pairs, 126 based on Foata normal form. 27/799 useless extension candidates. Maximal degree in co-relation 1292. Up to 447 conditions per place. [2024-11-12 20:27:59,047 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 30 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2024-11-12 20:27:59,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 193 flow [2024-11-12 20:27:59,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:27:59,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:27:59,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-12 20:27:59,049 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-12 20:27:59,049 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 104 flow. Second operand 3 states and 102 transitions. [2024-11-12 20:27:59,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 193 flow [2024-11-12 20:27:59,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 189 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:27:59,051 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 102 flow [2024-11-12 20:27:59,052 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2024-11-12 20:27:59,053 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2024-11-12 20:27:59,053 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 102 flow [2024-11-12 20:27:59,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2024-11-12 20:27:59,054 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:27:59,054 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-12 20:27:59,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 20:27:59,054 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-12 20:27:59,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:27:59,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1531449029, now seen corresponding path program 1 times [2024-11-12 20:27:59,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:27:59,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524910423] [2024-11-12 20:27:59,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:27:59,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:27:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:27:59,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:27:59,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:27:59,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524910423] [2024-11-12 20:27:59,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524910423] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:27:59,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:27:59,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:27:59,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655093550] [2024-11-12 20:27:59,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:27:59,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:27:59,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:27:59,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:27:59,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:27:59,133 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 51 [2024-11-12 20:27:59,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-11-12 20:27:59,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:27:59,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 51 [2024-11-12 20:27:59,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:27:59,271 INFO L124 PetriNetUnfolderBase]: 412/937 cut-off events. [2024-11-12 20:27:59,271 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-11-12 20:27:59,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1655 conditions, 937 events. 412/937 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5637 event pairs, 72 based on Foata normal form. 24/889 useless extension candidates. Maximal degree in co-relation 1135. Up to 472 conditions per place. [2024-11-12 20:27:59,278 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 30 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2024-11-12 20:27:59,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 53 transitions, 188 flow [2024-11-12 20:27:59,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:27:59,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:27:59,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-12 20:27:59,280 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-12 20:27:59,280 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 102 flow. Second operand 3 states and 102 transitions. [2024-11-12 20:27:59,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 53 transitions, 188 flow [2024-11-12 20:27:59,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 53 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:27:59,282 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 100 flow [2024-11-12 20:27:59,284 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2024-11-12 20:27:59,285 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2024-11-12 20:27:59,286 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 100 flow [2024-11-12 20:27:59,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-11-12 20:27:59,288 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:27:59,288 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-12 20:27:59,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 20:27:59,289 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-11-12 20:27:59,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:27:59,289 INFO L85 PathProgramCache]: Analyzing trace with hash -230297281, now seen corresponding path program 1 times [2024-11-12 20:27:59,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:27:59,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885010005] [2024-11-12 20:27:59,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:27:59,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:27:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:27:59,307 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:27:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:27:59,323 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:27:59,326 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 20:27:59,326 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-12 20:27:59,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-11-12 20:27:59,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-11-12 20:27:59,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-11-12 20:27:59,329 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-11-12 20:27:59,329 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-11-12 20:27:59,329 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-11-12 20:27:59,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-11-12 20:27:59,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-11-12 20:27:59,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-11-12 20:27:59,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-11-12 20:27:59,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-11-12 20:27:59,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-11-12 20:27:59,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 20:27:59,330 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-12 20:27:59,332 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 20:27:59,332 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-12 20:27:59,368 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 20:27:59,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 74 transitions, 166 flow [2024-11-12 20:27:59,380 INFO L124 PetriNetUnfolderBase]: 12/82 cut-off events. [2024-11-12 20:27:59,380 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-12 20:27:59,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 12/82 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 268 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 69. Up to 4 conditions per place. [2024-11-12 20:27:59,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 74 transitions, 166 flow [2024-11-12 20:27:59,382 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 74 transitions, 166 flow [2024-11-12 20:27:59,383 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:27:59,384 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;@16f731cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:27:59,384 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-12 20:27:59,386 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:27:59,386 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-12 20:27:59,386 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 20:27:59,387 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:27:59,387 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-12 20:27:59,387 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-12 20:27:59,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:27:59,388 INFO L85 PathProgramCache]: Analyzing trace with hash 374788195, now seen corresponding path program 1 times [2024-11-12 20:27:59,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:27:59,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058994760] [2024-11-12 20:27:59,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:27:59,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:27:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:27:59,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:27:59,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:27:59,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058994760] [2024-11-12 20:27:59,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058994760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:27:59,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:27:59,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:27:59,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143354741] [2024-11-12 20:27:59,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:27:59,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:27:59,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:27:59,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:27:59,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:27:59,442 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-12 20:27:59,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 74 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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) [2024-11-12 20:27:59,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:27:59,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-12 20:27:59,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:28:00,431 INFO L124 PetriNetUnfolderBase]: 5317/9887 cut-off events. [2024-11-12 20:28:00,431 INFO L125 PetriNetUnfolderBase]: For 475/475 co-relation queries the response was YES. [2024-11-12 20:28:00,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17250 conditions, 9887 events. 5317/9887 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 80960 event pairs, 806 based on Foata normal form. 1648/10785 useless extension candidates. Maximal degree in co-relation 6526. Up to 5693 conditions per place. [2024-11-12 20:28:00,518 INFO L140 encePairwiseOnDemand]: 64/74 looper letters, 49 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2024-11-12 20:28:00,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 86 transitions, 304 flow [2024-11-12 20:28:00,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:28:00,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:28:00,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2024-11-12 20:28:00,523 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7612612612612613 [2024-11-12 20:28:00,523 INFO L175 Difference]: Start difference. First operand has 69 places, 74 transitions, 166 flow. Second operand 3 states and 169 transitions. [2024-11-12 20:28:00,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 86 transitions, 304 flow [2024-11-12 20:28:00,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 86 transitions, 300 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-12 20:28:00,526 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 152 flow [2024-11-12 20:28:00,527 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2024-11-12 20:28:00,530 INFO L279 CegarLoopForPetriNet]: 69 programPoint places, 0 predicate places. [2024-11-12 20:28:00,530 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 152 flow [2024-11-12 20:28:00,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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) [2024-11-12 20:28:00,532 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:28:00,532 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-12 20:28:00,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 20:28:00,532 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-12 20:28:00,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:28:00,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1266467413, now seen corresponding path program 1 times [2024-11-12 20:28:00,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:28:00,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105089692] [2024-11-12 20:28:00,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:28:00,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:28:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:28:00,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:28:00,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:28:00,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105089692] [2024-11-12 20:28:00,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105089692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:28:00,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:28:00,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:28:00,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677134104] [2024-11-12 20:28:00,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:28:00,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:28:00,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:28:00,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:28:00,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:28:00,606 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-12 20:28:00,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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) [2024-11-12 20:28:00,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:28:00,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-12 20:28:00,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:28:01,472 INFO L124 PetriNetUnfolderBase]: 4754/9105 cut-off events. [2024-11-12 20:28:01,473 INFO L125 PetriNetUnfolderBase]: For 671/671 co-relation queries the response was YES. [2024-11-12 20:28:01,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16026 conditions, 9105 events. 4754/9105 cut-off events. For 671/671 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 75288 event pairs, 806 based on Foata normal form. 219/8589 useless extension candidates. Maximal degree in co-relation 14380. Up to 4911 conditions per place. [2024-11-12 20:28:01,546 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 48 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-11-12 20:28:01,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 85 transitions, 300 flow [2024-11-12 20:28:01,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:28:01,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:28:01,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-11-12 20:28:01,548 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2024-11-12 20:28:01,548 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 152 flow. Second operand 3 states and 156 transitions. [2024-11-12 20:28:01,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 85 transitions, 300 flow [2024-11-12 20:28:01,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 85 transitions, 296 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:28:01,556 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 150 flow [2024-11-12 20:28:01,557 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-11-12 20:28:01,558 INFO L279 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2024-11-12 20:28:01,558 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 150 flow [2024-11-12 20:28:01,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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) [2024-11-12 20:28:01,559 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:28:01,559 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-12 20:28:01,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 20:28:01,559 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-12 20:28:01,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:28:01,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1637667845, now seen corresponding path program 1 times [2024-11-12 20:28:01,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:28:01,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962496954] [2024-11-12 20:28:01,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:28:01,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:28:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:28:01,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:28:01,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:28:01,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962496954] [2024-11-12 20:28:01,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962496954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:28:01,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:28:01,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:28:01,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521216307] [2024-11-12 20:28:01,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:28:01,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:28:01,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:28:01,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:28:01,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:28:01,645 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-12 20:28:01,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2024-11-12 20:28:01,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:28:01,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-12 20:28:01,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:28:02,568 INFO L124 PetriNetUnfolderBase]: 5320/9847 cut-off events. [2024-11-12 20:28:02,568 INFO L125 PetriNetUnfolderBase]: For 751/751 co-relation queries the response was YES. [2024-11-12 20:28:02,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17622 conditions, 9847 events. 5320/9847 cut-off events. For 751/751 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 79872 event pairs, 824 based on Foata normal form. 216/9359 useless extension candidates. Maximal degree in co-relation 12822. Up to 5648 conditions per place. [2024-11-12 20:28:02,726 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 48 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-11-12 20:28:02,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 83 transitions, 295 flow [2024-11-12 20:28:02,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:28:02,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:28:02,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-11-12 20:28:02,727 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2024-11-12 20:28:02,727 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 150 flow. Second operand 3 states and 156 transitions. [2024-11-12 20:28:02,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 83 transitions, 295 flow [2024-11-12 20:28:02,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 83 transitions, 287 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:28:02,733 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 148 flow [2024-11-12 20:28:02,733 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2024-11-12 20:28:02,734 INFO L279 CegarLoopForPetriNet]: 69 programPoint places, -2 predicate places. [2024-11-12 20:28:02,734 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 148 flow [2024-11-12 20:28:02,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2024-11-12 20:28:02,735 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:28:02,735 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:28:02,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 20:28:02,735 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-12 20:28:02,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:28:02,736 INFO L85 PathProgramCache]: Analyzing trace with hash 771904809, now seen corresponding path program 1 times [2024-11-12 20:28:02,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:28:02,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000763073] [2024-11-12 20:28:02,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:28:02,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:28:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:28:02,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:28:02,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:28:02,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000763073] [2024-11-12 20:28:02,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000763073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:28:02,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:28:02,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:28:02,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600987412] [2024-11-12 20:28:02,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:28:02,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:28:02,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:28:02,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:28:02,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:28:02,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-12 20:28:02,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2024-11-12 20:28:02,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:28:02,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-12 20:28:02,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:28:03,440 INFO L124 PetriNetUnfolderBase]: 4718/8669 cut-off events. [2024-11-12 20:28:03,441 INFO L125 PetriNetUnfolderBase]: For 664/664 co-relation queries the response was YES. [2024-11-12 20:28:03,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15584 conditions, 8669 events. 4718/8669 cut-off events. For 664/664 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 67285 event pairs, 1400 based on Foata normal form. 216/8157 useless extension candidates. Maximal degree in co-relation 7276. Up to 4872 conditions per place. [2024-11-12 20:28:03,495 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 47 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2024-11-12 20:28:03,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 82 transitions, 287 flow [2024-11-12 20:28:03,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:28:03,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:28:03,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2024-11-12 20:28:03,497 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6981981981981982 [2024-11-12 20:28:03,497 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 148 flow. Second operand 3 states and 155 transitions. [2024-11-12 20:28:03,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 82 transitions, 287 flow [2024-11-12 20:28:03,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 82 transitions, 283 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:28:03,500 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 146 flow [2024-11-12 20:28:03,500 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-11-12 20:28:03,501 INFO L279 CegarLoopForPetriNet]: 69 programPoint places, -3 predicate places. [2024-11-12 20:28:03,501 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 146 flow [2024-11-12 20:28:03,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2024-11-12 20:28:03,501 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:28:03,502 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:28:03,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 20:28:03,502 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-12 20:28:03,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:28:03,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1957424746, now seen corresponding path program 1 times [2024-11-12 20:28:03,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:28:03,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62471451] [2024-11-12 20:28:03,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:28:03,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:28:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:28:03,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:28:03,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:28:03,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62471451] [2024-11-12 20:28:03,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62471451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:28:03,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:28:03,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:28:03,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221091940] [2024-11-12 20:28:03,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:28:03,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:28:03,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:28:03,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:28:03,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:28:03,571 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-12 20:28:03,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-11-12 20:28:03,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:28:03,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-12 20:28:03,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:28:04,481 INFO L124 PetriNetUnfolderBase]: 5212/9269 cut-off events. [2024-11-12 20:28:04,481 INFO L125 PetriNetUnfolderBase]: For 745/745 co-relation queries the response was YES. [2024-11-12 20:28:04,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17047 conditions, 9269 events. 5212/9269 cut-off events. For 745/745 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 71523 event pairs, 1880 based on Foata normal form. 219/8564 useless extension candidates. Maximal degree in co-relation 16694. Up to 4129 conditions per place. [2024-11-12 20:28:04,571 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 67 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2024-11-12 20:28:04,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 102 transitions, 394 flow [2024-11-12 20:28:04,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:28:04,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:28:04,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 212 transitions. [2024-11-12 20:28:04,573 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7162162162162162 [2024-11-12 20:28:04,573 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 146 flow. Second operand 4 states and 212 transitions. [2024-11-12 20:28:04,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 102 transitions, 394 flow [2024-11-12 20:28:04,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 102 transitions, 382 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:28:04,585 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 148 flow [2024-11-12 20:28:04,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2024-11-12 20:28:04,586 INFO L279 CegarLoopForPetriNet]: 69 programPoint places, -3 predicate places. [2024-11-12 20:28:04,586 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 148 flow [2024-11-12 20:28:04,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-11-12 20:28:04,587 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:28:04,587 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:28:04,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 20:28:04,587 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-12 20:28:04,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:28:04,588 INFO L85 PathProgramCache]: Analyzing trace with hash 550625427, now seen corresponding path program 1 times [2024-11-12 20:28:04,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:28:04,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783398048] [2024-11-12 20:28:04,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:28:04,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:28:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:28:04,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:28:04,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:28:04,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783398048] [2024-11-12 20:28:04,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783398048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:28:04,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:28:04,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 20:28:04,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637423050] [2024-11-12 20:28:04,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:28:04,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:28:04,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:28:04,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:28:04,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:28:04,662 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-12 20:28:04,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-11-12 20:28:04,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:28:04,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-12 20:28:04,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:28:05,937 INFO L124 PetriNetUnfolderBase]: 8962/16346 cut-off events. [2024-11-12 20:28:05,937 INFO L125 PetriNetUnfolderBase]: For 1763/1763 co-relation queries the response was YES. [2024-11-12 20:28:05,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30244 conditions, 16346 events. 8962/16346 cut-off events. For 1763/1763 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 139596 event pairs, 4390 based on Foata normal form. 219/15186 useless extension candidates. Maximal degree in co-relation 14374. Up to 7261 conditions per place. [2024-11-12 20:28:06,065 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 74 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2024-11-12 20:28:06,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 109 transitions, 424 flow [2024-11-12 20:28:06,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:28:06,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:28:06,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2024-11-12 20:28:06,068 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7398648648648649 [2024-11-12 20:28:06,068 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 148 flow. Second operand 4 states and 219 transitions. [2024-11-12 20:28:06,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 109 transitions, 424 flow [2024-11-12 20:28:06,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 109 transitions, 410 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:28:06,096 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 167 flow [2024-11-12 20:28:06,097 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=63, 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=167, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-11-12 20:28:06,098 INFO L279 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2024-11-12 20:28:06,098 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 167 flow [2024-11-12 20:28:06,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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) [2024-11-12 20:28:06,098 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:28:06,099 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-11-12 20:28:06,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 20:28:06,099 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-12 20:28:06,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:28:06,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1288043932, now seen corresponding path program 1 times [2024-11-12 20:28:06,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:28:06,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194384626] [2024-11-12 20:28:06,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:28:06,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:28:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:28:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:28:06,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:28:06,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194384626] [2024-11-12 20:28:06,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194384626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:28:06,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:28:06,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:28:06,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713983407] [2024-11-12 20:28:06,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:28:06,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:28:06,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:28:06,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:28:06,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:28:06,157 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-12 20:28:06,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-12 20:28:06,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:28:06,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-12 20:28:06,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:28:07,206 INFO L124 PetriNetUnfolderBase]: 9388/17039 cut-off events. [2024-11-12 20:28:07,206 INFO L125 PetriNetUnfolderBase]: For 3114/3258 co-relation queries the response was YES. [2024-11-12 20:28:07,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32358 conditions, 17039 events. 9388/17039 cut-off events. For 3114/3258 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 145912 event pairs, 1970 based on Foata normal form. 336/16234 useless extension candidates. Maximal degree in co-relation 18871. Up to 9128 conditions per place. [2024-11-12 20:28:07,350 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 53 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-11-12 20:28:07,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 85 transitions, 336 flow [2024-11-12 20:28:07,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:28:07,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:28:07,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2024-11-12 20:28:07,353 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6981981981981982 [2024-11-12 20:28:07,353 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 167 flow. Second operand 3 states and 155 transitions. [2024-11-12 20:28:07,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 85 transitions, 336 flow [2024-11-12 20:28:07,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 85 transitions, 330 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:28:07,357 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 166 flow [2024-11-12 20:28:07,357 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-11-12 20:28:07,358 INFO L279 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2024-11-12 20:28:07,358 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 166 flow [2024-11-12 20:28:07,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-12 20:28:07,358 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:28:07,358 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-12 20:28:07,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-12 20:28:07,359 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-11-12 20:28:07,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:28:07,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1274673770, now seen corresponding path program 1 times [2024-11-12 20:28:07,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:28:07,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732052104] [2024-11-12 20:28:07,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:28:07,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:28:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:28:07,371 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 20:28:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 20:28:07,383 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 20:28:07,386 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 20:28:07,386 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-12 20:28:07,386 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-11-12 20:28:07,387 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-11-12 20:28:07,387 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-11-12 20:28:07,387 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-11-12 20:28:07,387 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-11-12 20:28:07,387 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-11-12 20:28:07,387 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-11-12 20:28:07,388 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-11-12 20:28:07,388 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-11-12 20:28:07,388 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-11-12 20:28:07,388 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-11-12 20:28:07,388 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-11-12 20:28:07,388 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-11-12 20:28:07,388 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-11-12 20:28:07,389 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-11-12 20:28:07,389 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-11-12 20:28:07,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-12 20:28:07,389 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:28:07,390 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 20:28:07,390 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-12 20:28:07,437 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 20:28:07,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 97 transitions, 222 flow [2024-11-12 20:28:07,452 INFO L124 PetriNetUnfolderBase]: 16/108 cut-off events. [2024-11-12 20:28:07,452 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-12 20:28:07,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 108 events. 16/108 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 369 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 94. Up to 5 conditions per place. [2024-11-12 20:28:07,453 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 97 transitions, 222 flow [2024-11-12 20:28:07,455 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 97 transitions, 222 flow [2024-11-12 20:28:07,456 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:28:07,456 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;@16f731cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:28:07,456 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-12 20:28:07,459 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:28:07,459 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-12 20:28:07,459 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 20:28:07,459 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:28:07,460 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-12 20:28:07,460 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:28:07,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:28:07,460 INFO L85 PathProgramCache]: Analyzing trace with hash 467377626, now seen corresponding path program 1 times [2024-11-12 20:28:07,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:28:07,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363941733] [2024-11-12 20:28:07,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:28:07,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:28:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:28:07,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:28:07,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:28:07,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363941733] [2024-11-12 20:28:07,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363941733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:28:07,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:28:07,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:28:07,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93887101] [2024-11-12 20:28:07,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:28:07,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:28:07,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:28:07,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:28:07,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:28:07,508 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2024-11-12 20:28:07,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 97 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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) [2024-11-12 20:28:07,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:28:07,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2024-11-12 20:28:07,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:28:14,596 INFO L124 PetriNetUnfolderBase]: 58261/94975 cut-off events. [2024-11-12 20:28:14,596 INFO L125 PetriNetUnfolderBase]: For 6419/6419 co-relation queries the response was YES. [2024-11-12 20:28:14,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170307 conditions, 94975 events. 58261/94975 cut-off events. For 6419/6419 co-relation queries the response was YES. Maximal size of possible extension queue 4003. Compared 895680 event pairs, 9510 based on Foata normal form. 19220/107997 useless extension candidates. Maximal degree in co-relation 30712. Up to 57853 conditions per place. [2024-11-12 20:28:15,469 INFO L140 encePairwiseOnDemand]: 85/97 looper letters, 67 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2024-11-12 20:28:15,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 116 transitions, 419 flow [2024-11-12 20:28:15,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:28:15,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:28:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2024-11-12 20:28:15,471 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7800687285223368 [2024-11-12 20:28:15,471 INFO L175 Difference]: Start difference. First operand has 90 places, 97 transitions, 222 flow. Second operand 3 states and 227 transitions. [2024-11-12 20:28:15,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 116 transitions, 419 flow [2024-11-12 20:28:15,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 116 transitions, 407 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-12 20:28:15,476 INFO L231 Difference]: Finished difference. Result has 90 places, 87 transitions, 200 flow [2024-11-12 20:28:15,477 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=90, PETRI_TRANSITIONS=87} [2024-11-12 20:28:15,477 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, 0 predicate places. [2024-11-12 20:28:15,477 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 87 transitions, 200 flow [2024-11-12 20:28:15,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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) [2024-11-12 20:28:15,478 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:28:15,478 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-12 20:28:15,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-12 20:28:15,478 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:28:15,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:28:15,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1603805067, now seen corresponding path program 1 times [2024-11-12 20:28:15,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:28:15,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830657990] [2024-11-12 20:28:15,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:28:15,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:28:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:28:15,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:28:15,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:28:15,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830657990] [2024-11-12 20:28:15,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830657990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:28:15,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:28:15,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:28:15,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883539636] [2024-11-12 20:28:15,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:28:15,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:28:15,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:28:15,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:28:15,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:28:15,547 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2024-11-12 20:28:15,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 87 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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) [2024-11-12 20:28:15,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:28:15,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2024-11-12 20:28:15,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:28:21,541 INFO L124 PetriNetUnfolderBase]: 52002/86961 cut-off events. [2024-11-12 20:28:21,542 INFO L125 PetriNetUnfolderBase]: For 5479/5479 co-relation queries the response was YES. [2024-11-12 20:28:21,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156347 conditions, 86961 events. 52002/86961 cut-off events. For 5479/5479 co-relation queries the response was YES. Maximal size of possible extension queue 3680. Compared 837029 event pairs, 9510 based on Foata normal form. 1755/82605 useless extension candidates. Maximal degree in co-relation 140780. Up to 49839 conditions per place. [2024-11-12 20:28:22,145 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 66 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2024-11-12 20:28:22,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 115 transitions, 407 flow [2024-11-12 20:28:22,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:28:22,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:28:22,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 210 transitions. [2024-11-12 20:28:22,146 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7216494845360825 [2024-11-12 20:28:22,146 INFO L175 Difference]: Start difference. First operand has 90 places, 87 transitions, 200 flow. Second operand 3 states and 210 transitions. [2024-11-12 20:28:22,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 115 transitions, 407 flow [2024-11-12 20:28:22,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 115 transitions, 403 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:28:22,155 INFO L231 Difference]: Finished difference. Result has 89 places, 86 transitions, 198 flow [2024-11-12 20:28:22,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=89, PETRI_TRANSITIONS=86} [2024-11-12 20:28:22,156 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, -1 predicate places. [2024-11-12 20:28:22,156 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 86 transitions, 198 flow [2024-11-12 20:28:22,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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) [2024-11-12 20:28:22,157 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:28:22,157 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-12 20:28:22,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-12 20:28:22,157 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:28:22,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:28:22,157 INFO L85 PathProgramCache]: Analyzing trace with hash -695787653, now seen corresponding path program 1 times [2024-11-12 20:28:22,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:28:22,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032080172] [2024-11-12 20:28:22,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:28:22,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:28:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:28:22,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:28:22,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:28:22,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032080172] [2024-11-12 20:28:22,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032080172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:28:22,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:28:22,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:28:22,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181781621] [2024-11-12 20:28:22,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:28:22,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:28:22,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:28:22,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:28:22,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:28:22,213 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2024-11-12 20:28:22,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 86 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2024-11-12 20:28:22,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:28:22,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2024-11-12 20:28:22,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:28:28,471 INFO L124 PetriNetUnfolderBase]: 57886/92803 cut-off events. [2024-11-12 20:28:28,471 INFO L125 PetriNetUnfolderBase]: For 6269/6269 co-relation queries the response was YES. [2024-11-12 20:28:28,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170851 conditions, 92803 events. 57886/92803 cut-off events. For 6269/6269 co-relation queries the response was YES. Maximal size of possible extension queue 4059. Compared 842182 event pairs, 23016 based on Foata normal form. 1752/87314 useless extension candidates. Maximal degree in co-relation 125149. Up to 57808 conditions per place. [2024-11-12 20:28:29,053 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 66 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2024-11-12 20:28:29,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 113 transitions, 402 flow [2024-11-12 20:28:29,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:28:29,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:28:29,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 210 transitions. [2024-11-12 20:28:29,056 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7216494845360825 [2024-11-12 20:28:29,056 INFO L175 Difference]: Start difference. First operand has 89 places, 86 transitions, 198 flow. Second operand 3 states and 210 transitions. [2024-11-12 20:28:29,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 113 transitions, 402 flow [2024-11-12 20:28:29,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 113 transitions, 394 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:28:29,076 INFO L231 Difference]: Finished difference. Result has 88 places, 85 transitions, 196 flow [2024-11-12 20:28:29,077 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=88, PETRI_TRANSITIONS=85} [2024-11-12 20:28:29,077 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, -2 predicate places. [2024-11-12 20:28:29,077 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 85 transitions, 196 flow [2024-11-12 20:28:29,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2024-11-12 20:28:29,078 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:28:29,078 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:28:29,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-12 20:28:29,078 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:28:29,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:28:29,079 INFO L85 PathProgramCache]: Analyzing trace with hash -94580192, now seen corresponding path program 1 times [2024-11-12 20:28:29,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:28:29,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444027428] [2024-11-12 20:28:29,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:28:29,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:28:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:28:29,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:28:29,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:28:29,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444027428] [2024-11-12 20:28:29,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444027428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:28:29,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:28:29,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:28:29,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999588052] [2024-11-12 20:28:29,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:28:29,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:28:29,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:28:29,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:28:29,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:28:29,133 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2024-11-12 20:28:29,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 85 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2024-11-12 20:28:29,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:28:29,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2024-11-12 20:28:29,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:28:34,929 INFO L124 PetriNetUnfolderBase]: 51414/82779 cut-off events. [2024-11-12 20:28:34,929 INFO L125 PetriNetUnfolderBase]: For 5606/5606 co-relation queries the response was YES. [2024-11-12 20:28:35,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152159 conditions, 82779 events. 51414/82779 cut-off events. For 5606/5606 co-relation queries the response was YES. Maximal size of possible extension queue 3597. Compared 743392 event pairs, 20568 based on Foata normal form. 1752/78004 useless extension candidates. Maximal degree in co-relation 72464. Up to 49800 conditions per place. [2024-11-12 20:28:35,434 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 65 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2024-11-12 20:28:35,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 112 transitions, 394 flow [2024-11-12 20:28:35,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:28:35,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:28:35,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 209 transitions. [2024-11-12 20:28:35,435 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.718213058419244 [2024-11-12 20:28:35,435 INFO L175 Difference]: Start difference. First operand has 88 places, 85 transitions, 196 flow. Second operand 3 states and 209 transitions. [2024-11-12 20:28:35,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 112 transitions, 394 flow [2024-11-12 20:28:35,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 112 transitions, 390 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:28:35,444 INFO L231 Difference]: Finished difference. Result has 87 places, 84 transitions, 194 flow [2024-11-12 20:28:35,444 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=87, PETRI_TRANSITIONS=84} [2024-11-12 20:28:35,445 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, -3 predicate places. [2024-11-12 20:28:35,445 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 84 transitions, 194 flow [2024-11-12 20:28:35,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2024-11-12 20:28:35,445 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:28:35,445 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:28:35,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-12 20:28:35,445 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:28:35,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:28:35,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1741098529, now seen corresponding path program 1 times [2024-11-12 20:28:35,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:28:35,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691666190] [2024-11-12 20:28:35,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:28:35,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:28:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:28:35,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:28:35,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:28:35,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691666190] [2024-11-12 20:28:35,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691666190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:28:35,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:28:35,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:28:35,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924227382] [2024-11-12 20:28:35,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:28:35,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:28:35,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:28:35,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:28:35,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:28:35,533 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 97 [2024-11-12 20:28:35,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 84 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 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) [2024-11-12 20:28:35,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:28:35,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 97 [2024-11-12 20:28:35,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:28:44,548 INFO L124 PetriNetUnfolderBase]: 89773/136036 cut-off events. [2024-11-12 20:28:44,548 INFO L125 PetriNetUnfolderBase]: For 9414/9414 co-relation queries the response was YES. [2024-11-12 20:28:44,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257442 conditions, 136036 events. 89773/136036 cut-off events. For 9414/9414 co-relation queries the response was YES. Maximal size of possible extension queue 4793. Compared 1183470 event pairs, 12570 based on Foata normal form. 3510/128563 useless extension candidates. Maximal degree in co-relation 256632. Up to 49839 conditions per place. [2024-11-12 20:28:45,394 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 155 selfloop transitions, 6 changer transitions 0/203 dead transitions. [2024-11-12 20:28:45,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 203 transitions, 830 flow [2024-11-12 20:28:45,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:28:45,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:28:45,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 434 transitions. [2024-11-12 20:28:45,397 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7457044673539519 [2024-11-12 20:28:45,397 INFO L175 Difference]: Start difference. First operand has 87 places, 84 transitions, 194 flow. Second operand 6 states and 434 transitions. [2024-11-12 20:28:45,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 203 transitions, 830 flow [2024-11-12 20:28:45,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 203 transitions, 810 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:28:45,496 INFO L231 Difference]: Finished difference. Result has 90 places, 85 transitions, 208 flow [2024-11-12 20:28:45,496 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=208, PETRI_PLACES=90, PETRI_TRANSITIONS=85} [2024-11-12 20:28:45,497 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, 0 predicate places. [2024-11-12 20:28:45,498 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 85 transitions, 208 flow [2024-11-12 20:28:45,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 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) [2024-11-12 20:28:45,498 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:28:45,498 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:28:45,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-12 20:28:45,499 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-11-12 20:28:45,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:28:45,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1860519885, now seen corresponding path program 1 times [2024-11-12 20:28:45,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:28:45,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584654360] [2024-11-12 20:28:45,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:28:45,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:28:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:28:45,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:28:45,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:28:45,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584654360] [2024-11-12 20:28:45,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584654360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:28:45,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:28:45,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 20:28:45,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081882064] [2024-11-12 20:28:45,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:28:45,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:28:45,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:28:45,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:28:45,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-12 20:28:45,602 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2024-11-12 20:28:45,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 85 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 44.333333333333336) internal successors, (266), 6 states have internal predecessors, (266), 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) [2024-11-12 20:28:45,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:28:45,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2024-11-12 20:28:45,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand