./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:44:58,704 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:44:58,773 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:44:58,777 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:44:58,778 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:44:58,801 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:44:58,803 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:44:58,803 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:44:58,804 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:44:58,804 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:44:58,805 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:44:58,805 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:44:58,805 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:44:58,806 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:44:58,806 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:44:58,807 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:44:58,808 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:44:58,808 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:44:58,808 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:44:58,808 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:44:58,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:44:58,811 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:44:58,812 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:44:58,812 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:44:58,812 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:44:58,812 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:44:58,812 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:44:58,812 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:44:58,812 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:44:58,813 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:44:58,813 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:44:58,813 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:44:58,813 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:44:58,813 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:44:58,813 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:44:58,813 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:44:58,814 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:44:58,814 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:44:58,814 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:44:58,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:44:58,814 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:44:58,815 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:44:58,816 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:44:58,816 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:44:58,816 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 [2024-10-13 16:44:59,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:44:59,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:44:59,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:44:59,065 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:44:59,066 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:44:59,066 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2024-10-13 16:45:00,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:45:00,673 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:45:00,674 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2024-10-13 16:45:00,687 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41f1844d1/d13389be336043fbacc888a11929fd9e/FLAGe2e2b5f02 [2024-10-13 16:45:01,058 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41f1844d1/d13389be336043fbacc888a11929fd9e [2024-10-13 16:45:01,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:45:01,062 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:45:01,063 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:45:01,063 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:45:01,067 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:45:01,068 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:45:01" (1/1) ... [2024-10-13 16:45:01,069 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dff1484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:01, skipping insertion in model container [2024-10-13 16:45:01,069 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:45:01" (1/1) ... [2024-10-13 16:45:01,086 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:45:01,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:45:01,329 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:45:01,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:45:01,374 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:45:01,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:01 WrapperNode [2024-10-13 16:45:01,377 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:45:01,378 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:45:01,378 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:45:01,378 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:45:01,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:01" (1/1) ... [2024-10-13 16:45:01,412 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:01" (1/1) ... [2024-10-13 16:45:01,464 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 235 [2024-10-13 16:45:01,465 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:45:01,465 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:45:01,469 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:45:01,469 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:45:01,480 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:01" (1/1) ... [2024-10-13 16:45:01,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:01" (1/1) ... [2024-10-13 16:45:01,484 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:01" (1/1) ... [2024-10-13 16:45:01,500 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-13 16:45:01,500 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:01" (1/1) ... [2024-10-13 16:45:01,500 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:01" (1/1) ... [2024-10-13 16:45:01,505 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:01" (1/1) ... [2024-10-13 16:45:01,512 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:01" (1/1) ... [2024-10-13 16:45:01,515 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:01" (1/1) ... [2024-10-13 16:45:01,516 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:01" (1/1) ... [2024-10-13 16:45:01,522 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:45:01,523 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:45:01,523 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:45:01,523 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:45:01,523 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:01" (1/1) ... [2024-10-13 16:45:01,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:45:01,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:01,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 16:45:01,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 16:45:01,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:45:01,598 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 16:45:01,598 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 16:45:01,598 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 16:45:01,598 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 16:45:01,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:45:01,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:45:01,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:45:01,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:45:01,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 16:45:01,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:45:01,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:45:01,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:45:01,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:45:01,600 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:45:01,697 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:45:01,699 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:45:02,055 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:45:02,056 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:45:02,247 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:45:02,247 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-13 16:45:02,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:45:02 BoogieIcfgContainer [2024-10-13 16:45:02,247 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:45:02,258 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:45:02,258 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:45:02,261 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:45:02,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:45:01" (1/3) ... [2024-10-13 16:45:02,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce7c82e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:45:02, skipping insertion in model container [2024-10-13 16:45:02,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:45:01" (2/3) ... [2024-10-13 16:45:02,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce7c82e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:45:02, skipping insertion in model container [2024-10-13 16:45:02,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:45:02" (3/3) ... [2024-10-13 16:45:02,266 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2024-10-13 16:45:02,304 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:45:02,305 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-10-13 16:45:02,305 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:45:02,350 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 16:45:02,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 86 transitions, 186 flow [2024-10-13 16:45:02,403 INFO L124 PetriNetUnfolderBase]: 10/84 cut-off events. [2024-10-13 16:45:02,403 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 16:45:02,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 10/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 279 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-10-13 16:45:02,407 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 86 transitions, 186 flow [2024-10-13 16:45:02,410 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 82 transitions, 173 flow [2024-10-13 16:45:02,416 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:45:02,421 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;@34eff576, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:45:02,421 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-10-13 16:45:02,423 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:45:02,423 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-13 16:45:02,423 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:45:02,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:02,424 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 16:45:02,424 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:02,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:02,428 INFO L85 PathProgramCache]: Analyzing trace with hash 728004, now seen corresponding path program 1 times [2024-10-13 16:45:02,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:02,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577742451] [2024-10-13 16:45:02,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:02,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:02,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:02,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:02,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577742451] [2024-10-13 16:45:02,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577742451] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:02,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:02,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:45:02,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647759996] [2024-10-13 16:45:02,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:02,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:02,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:02,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:02,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:02,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-10-13 16:45:02,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:02,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:02,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-10-13 16:45:02,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:02,992 INFO L124 PetriNetUnfolderBase]: 512/1314 cut-off events. [2024-10-13 16:45:02,992 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-10-13 16:45:02,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2129 conditions, 1314 events. 512/1314 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9058 event pairs, 322 based on Foata normal form. 2/992 useless extension candidates. Maximal degree in co-relation 2041. Up to 772 conditions per place. [2024-10-13 16:45:03,007 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 34 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2024-10-13 16:45:03,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 80 transitions, 249 flow [2024-10-13 16:45:03,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:03,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:03,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2024-10-13 16:45:03,020 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6104651162790697 [2024-10-13 16:45:03,022 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 173 flow. Second operand 4 states and 210 transitions. [2024-10-13 16:45:03,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 80 transitions, 249 flow [2024-10-13 16:45:03,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 244 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:45:03,031 INFO L231 Difference]: Finished difference. Result has 77 places, 80 transitions, 176 flow [2024-10-13 16:45:03,033 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=77, PETRI_TRANSITIONS=80} [2024-10-13 16:45:03,038 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, -2 predicate places. [2024-10-13 16:45:03,038 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 80 transitions, 176 flow [2024-10-13 16:45:03,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:03,039 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:03,039 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-13 16:45:03,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:45:03,039 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:03,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:03,040 INFO L85 PathProgramCache]: Analyzing trace with hash 22568887, now seen corresponding path program 1 times [2024-10-13 16:45:03,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:03,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780780628] [2024-10-13 16:45:03,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:03,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:03,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:03,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:03,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780780628] [2024-10-13 16:45:03,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780780628] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:03,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:03,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:45:03,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45728010] [2024-10-13 16:45:03,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:03,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:03,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:03,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:03,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:03,124 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-10-13 16:45:03,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 80 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:03,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:03,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-10-13 16:45:03,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:03,305 INFO L124 PetriNetUnfolderBase]: 514/1322 cut-off events. [2024-10-13 16:45:03,306 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-13 16:45:03,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2142 conditions, 1322 events. 514/1322 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9112 event pairs, 322 based on Foata normal form. 2/1002 useless extension candidates. Maximal degree in co-relation 2094. Up to 781 conditions per place. [2024-10-13 16:45:03,312 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 39 selfloop transitions, 7 changer transitions 0/86 dead transitions. [2024-10-13 16:45:03,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 86 transitions, 290 flow [2024-10-13 16:45:03,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:03,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:03,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-10-13 16:45:03,315 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-10-13 16:45:03,315 INFO L175 Difference]: Start difference. First operand has 77 places, 80 transitions, 176 flow. Second operand 4 states and 216 transitions. [2024-10-13 16:45:03,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 86 transitions, 290 flow [2024-10-13 16:45:03,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 86 transitions, 268 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:45:03,318 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 220 flow [2024-10-13 16:45:03,319 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2024-10-13 16:45:03,319 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 1 predicate places. [2024-10-13 16:45:03,319 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 220 flow [2024-10-13 16:45:03,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:03,320 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:03,320 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-13 16:45:03,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 16:45:03,320 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:03,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:03,321 INFO L85 PathProgramCache]: Analyzing trace with hash 213791924, now seen corresponding path program 1 times [2024-10-13 16:45:03,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:03,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563722860] [2024-10-13 16:45:03,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:03,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:03,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:03,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:03,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563722860] [2024-10-13 16:45:03,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563722860] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:03,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:03,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:45:03,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971332285] [2024-10-13 16:45:03,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:03,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:45:03,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:03,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:45:03,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:45:03,470 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-10-13 16:45:03,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 86 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:03,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:03,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-10-13 16:45:03,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:03,795 INFO L124 PetriNetUnfolderBase]: 1224/3024 cut-off events. [2024-10-13 16:45:03,795 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-10-13 16:45:03,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4945 conditions, 3024 events. 1224/3024 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 24558 event pairs, 768 based on Foata normal form. 24/2302 useless extension candidates. Maximal degree in co-relation 2504. Up to 943 conditions per place. [2024-10-13 16:45:03,817 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 74 selfloop transitions, 7 changer transitions 0/119 dead transitions. [2024-10-13 16:45:03,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 119 transitions, 452 flow [2024-10-13 16:45:03,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:45:03,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:45:03,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 290 transitions. [2024-10-13 16:45:03,823 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6744186046511628 [2024-10-13 16:45:03,823 INFO L175 Difference]: Start difference. First operand has 80 places, 86 transitions, 220 flow. Second operand 5 states and 290 transitions. [2024-10-13 16:45:03,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 119 transitions, 452 flow [2024-10-13 16:45:03,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 119 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:45:03,825 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 253 flow [2024-10-13 16:45:03,825 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=253, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2024-10-13 16:45:03,826 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 7 predicate places. [2024-10-13 16:45:03,826 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 253 flow [2024-10-13 16:45:03,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:03,826 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:03,827 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-13 16:45:03,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 16:45:03,827 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:03,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:03,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1959390980, now seen corresponding path program 1 times [2024-10-13 16:45:03,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:03,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130369654] [2024-10-13 16:45:03,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:03,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:03,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:03,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:03,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130369654] [2024-10-13 16:45:03,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130369654] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:03,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828645940] [2024-10-13 16:45:03,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:03,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:03,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:03,906 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:45:03,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:45:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:03,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:45:03,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:04,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:04,011 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:04,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:04,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828645940] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:04,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:04,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-13 16:45:04,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038514568] [2024-10-13 16:45:04,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:04,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 16:45:04,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:04,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 16:45:04,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-13 16:45:04,070 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-10-13 16:45:04,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 88 transitions, 253 flow. Second operand has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:04,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:04,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-10-13 16:45:04,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:04,399 INFO L124 PetriNetUnfolderBase]: 1040/2654 cut-off events. [2024-10-13 16:45:04,399 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-10-13 16:45:04,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4372 conditions, 2654 events. 1040/2654 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 21277 event pairs, 648 based on Foata normal form. 0/2016 useless extension candidates. Maximal degree in co-relation 2203. Up to 1554 conditions per place. [2024-10-13 16:45:04,418 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 39 selfloop transitions, 25 changer transitions 0/106 dead transitions. [2024-10-13 16:45:04,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 106 transitions, 465 flow [2024-10-13 16:45:04,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:45:04,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:45:04,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 490 transitions. [2024-10-13 16:45:04,420 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5697674418604651 [2024-10-13 16:45:04,420 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 253 flow. Second operand 10 states and 490 transitions. [2024-10-13 16:45:04,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 106 transitions, 465 flow [2024-10-13 16:45:04,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 106 transitions, 459 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:45:04,425 INFO L231 Difference]: Finished difference. Result has 97 places, 106 transitions, 415 flow [2024-10-13 16:45:04,426 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=415, PETRI_PLACES=97, PETRI_TRANSITIONS=106} [2024-10-13 16:45:04,427 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 18 predicate places. [2024-10-13 16:45:04,427 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 106 transitions, 415 flow [2024-10-13 16:45:04,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:04,428 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:04,428 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:04,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 16:45:04,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:04,630 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:04,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:04,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1962384161, now seen corresponding path program 1 times [2024-10-13 16:45:04,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:04,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465585704] [2024-10-13 16:45:04,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:04,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:04,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:04,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:04,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465585704] [2024-10-13 16:45:04,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465585704] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:04,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:04,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:45:04,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623296580] [2024-10-13 16:45:04,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:04,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:04,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:04,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:04,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:04,746 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-10-13 16:45:04,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 106 transitions, 415 flow. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:04,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:04,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-10-13 16:45:04,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:05,207 INFO L124 PetriNetUnfolderBase]: 2294/5682 cut-off events. [2024-10-13 16:45:05,208 INFO L125 PetriNetUnfolderBase]: For 532/532 co-relation queries the response was YES. [2024-10-13 16:45:05,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9597 conditions, 5682 events. 2294/5682 cut-off events. For 532/532 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 51837 event pairs, 1412 based on Foata normal form. 88/4480 useless extension candidates. Maximal degree in co-relation 9500. Up to 1735 conditions per place. [2024-10-13 16:45:05,234 INFO L140 encePairwiseOnDemand]: 79/86 looper letters, 111 selfloop transitions, 5 changer transitions 0/154 dead transitions. [2024-10-13 16:45:05,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 154 transitions, 829 flow [2024-10-13 16:45:05,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:05,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:05,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-10-13 16:45:05,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7296511627906976 [2024-10-13 16:45:05,237 INFO L175 Difference]: Start difference. First operand has 97 places, 106 transitions, 415 flow. Second operand 4 states and 251 transitions. [2024-10-13 16:45:05,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 154 transitions, 829 flow [2024-10-13 16:45:05,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 154 transitions, 735 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-10-13 16:45:05,243 INFO L231 Difference]: Finished difference. Result has 98 places, 108 transitions, 388 flow [2024-10-13 16:45:05,243 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=388, PETRI_PLACES=98, PETRI_TRANSITIONS=108} [2024-10-13 16:45:05,244 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 19 predicate places. [2024-10-13 16:45:05,244 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 108 transitions, 388 flow [2024-10-13 16:45:05,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:05,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:05,245 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:05,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:45:05,245 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:05,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:05,245 INFO L85 PathProgramCache]: Analyzing trace with hash 287054113, now seen corresponding path program 1 times [2024-10-13 16:45:05,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:05,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712782385] [2024-10-13 16:45:05,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:05,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:05,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:05,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712782385] [2024-10-13 16:45:05,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712782385] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:05,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371580400] [2024-10-13 16:45:05,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:05,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:05,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:05,356 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:45:05,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:45:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:05,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:45:05,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:05,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:45:05,522 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:45:05,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371580400] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:05,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:45:05,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-10-13 16:45:05,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138603327] [2024-10-13 16:45:05,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:05,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:45:05,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:05,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:45:05,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:45:05,546 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-10-13 16:45:05,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 108 transitions, 388 flow. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:05,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:05,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-10-13 16:45:05,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:05,980 INFO L124 PetriNetUnfolderBase]: 2061/5238 cut-off events. [2024-10-13 16:45:05,980 INFO L125 PetriNetUnfolderBase]: For 508/512 co-relation queries the response was YES. [2024-10-13 16:45:05,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8594 conditions, 5238 events. 2061/5238 cut-off events. For 508/512 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 47388 event pairs, 1290 based on Foata normal form. 78/4059 useless extension candidates. Maximal degree in co-relation 8509. Up to 3126 conditions per place. [2024-10-13 16:45:06,006 INFO L140 encePairwiseOnDemand]: 83/86 looper letters, 61 selfloop transitions, 1 changer transitions 0/104 dead transitions. [2024-10-13 16:45:06,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 104 transitions, 484 flow [2024-10-13 16:45:06,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:45:06,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:45:06,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2024-10-13 16:45:06,007 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-13 16:45:06,007 INFO L175 Difference]: Start difference. First operand has 98 places, 108 transitions, 388 flow. Second operand 3 states and 172 transitions. [2024-10-13 16:45:06,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 104 transitions, 484 flow [2024-10-13 16:45:06,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 104 transitions, 467 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-13 16:45:06,012 INFO L231 Difference]: Finished difference. Result has 94 places, 104 transitions, 345 flow [2024-10-13 16:45:06,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=345, PETRI_PLACES=94, PETRI_TRANSITIONS=104} [2024-10-13 16:45:06,013 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 15 predicate places. [2024-10-13 16:45:06,013 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 104 transitions, 345 flow [2024-10-13 16:45:06,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:06,014 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:06,014 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:06,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 16:45:06,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-13 16:45:06,216 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:06,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:06,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1709075386, now seen corresponding path program 1 times [2024-10-13 16:45:06,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:06,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212070550] [2024-10-13 16:45:06,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:06,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:06,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:06,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:06,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212070550] [2024-10-13 16:45:06,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212070550] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:06,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:06,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:45:06,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025341205] [2024-10-13 16:45:06,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:06,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:06,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:06,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:06,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:06,327 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-10-13 16:45:06,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 104 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:06,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:06,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-10-13 16:45:06,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:07,259 INFO L124 PetriNetUnfolderBase]: 4220/9860 cut-off events. [2024-10-13 16:45:07,259 INFO L125 PetriNetUnfolderBase]: For 106/110 co-relation queries the response was YES. [2024-10-13 16:45:07,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16563 conditions, 9860 events. 4220/9860 cut-off events. For 106/110 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 93576 event pairs, 1918 based on Foata normal form. 104/7727 useless extension candidates. Maximal degree in co-relation 16547. Up to 3471 conditions per place. [2024-10-13 16:45:07,306 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 105 selfloop transitions, 3 changer transitions 0/148 dead transitions. [2024-10-13 16:45:07,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 148 transitions, 654 flow [2024-10-13 16:45:07,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:07,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:07,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 262 transitions. [2024-10-13 16:45:07,308 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7616279069767442 [2024-10-13 16:45:07,308 INFO L175 Difference]: Start difference. First operand has 94 places, 104 transitions, 345 flow. Second operand 4 states and 262 transitions. [2024-10-13 16:45:07,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 148 transitions, 654 flow [2024-10-13 16:45:07,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 148 transitions, 653 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:45:07,312 INFO L231 Difference]: Finished difference. Result has 98 places, 106 transitions, 366 flow [2024-10-13 16:45:07,312 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=366, PETRI_PLACES=98, PETRI_TRANSITIONS=106} [2024-10-13 16:45:07,313 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 19 predicate places. [2024-10-13 16:45:07,313 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 106 transitions, 366 flow [2024-10-13 16:45:07,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:07,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:07,314 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:07,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 16:45:07,314 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:07,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:07,315 INFO L85 PathProgramCache]: Analyzing trace with hash 681603450, now seen corresponding path program 1 times [2024-10-13 16:45:07,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:07,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849905936] [2024-10-13 16:45:07,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:07,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:07,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:07,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:07,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849905936] [2024-10-13 16:45:07,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849905936] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:07,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193553112] [2024-10-13 16:45:07,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:07,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:07,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:07,448 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:45:07,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 16:45:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:07,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:45:07,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:07,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:45:07,564 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:45:07,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193553112] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:07,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:45:07,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2024-10-13 16:45:07,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38232268] [2024-10-13 16:45:07,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:07,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:07,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:07,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:07,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:45:07,579 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-10-13 16:45:07,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 106 transitions, 366 flow. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:07,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:07,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-10-13 16:45:07,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:08,337 INFO L124 PetriNetUnfolderBase]: 3808/9624 cut-off events. [2024-10-13 16:45:08,337 INFO L125 PetriNetUnfolderBase]: For 1148/1180 co-relation queries the response was YES. [2024-10-13 16:45:08,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16439 conditions, 9624 events. 3808/9624 cut-off events. For 1148/1180 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 96184 event pairs, 2428 based on Foata normal form. 118/7639 useless extension candidates. Maximal degree in co-relation 16421. Up to 5751 conditions per place. [2024-10-13 16:45:08,392 INFO L140 encePairwiseOnDemand]: 82/86 looper letters, 58 selfloop transitions, 6 changer transitions 0/102 dead transitions. [2024-10-13 16:45:08,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 102 transitions, 468 flow [2024-10-13 16:45:08,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:08,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:08,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-10-13 16:45:08,393 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.627906976744186 [2024-10-13 16:45:08,394 INFO L175 Difference]: Start difference. First operand has 98 places, 106 transitions, 366 flow. Second operand 4 states and 216 transitions. [2024-10-13 16:45:08,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 102 transitions, 468 flow [2024-10-13 16:45:08,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 102 transitions, 461 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 16:45:08,397 INFO L231 Difference]: Finished difference. Result has 95 places, 102 transitions, 345 flow [2024-10-13 16:45:08,397 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=345, PETRI_PLACES=95, PETRI_TRANSITIONS=102} [2024-10-13 16:45:08,397 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 16 predicate places. [2024-10-13 16:45:08,398 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 102 transitions, 345 flow [2024-10-13 16:45:08,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:08,398 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:08,398 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:08,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 16:45:08,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:08,599 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:08,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:08,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1441729190, now seen corresponding path program 1 times [2024-10-13 16:45:08,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:08,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508408989] [2024-10-13 16:45:08,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:08,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:08,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:08,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:08,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508408989] [2024-10-13 16:45:08,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508408989] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:08,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:08,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:45:08,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487016244] [2024-10-13 16:45:08,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:08,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:08,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:08,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:08,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:08,673 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-10-13 16:45:08,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 102 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:08,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:08,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-10-13 16:45:08,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:09,677 INFO L124 PetriNetUnfolderBase]: 6632/14752 cut-off events. [2024-10-13 16:45:09,677 INFO L125 PetriNetUnfolderBase]: For 634/666 co-relation queries the response was YES. [2024-10-13 16:45:09,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25984 conditions, 14752 events. 6632/14752 cut-off events. For 634/666 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 145091 event pairs, 2324 based on Foata normal form. 416/12074 useless extension candidates. Maximal degree in co-relation 25968. Up to 5515 conditions per place. [2024-10-13 16:45:09,727 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 100 selfloop transitions, 5 changer transitions 0/137 dead transitions. [2024-10-13 16:45:09,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 137 transitions, 629 flow [2024-10-13 16:45:09,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:09,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:09,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 242 transitions. [2024-10-13 16:45:09,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7034883720930233 [2024-10-13 16:45:09,729 INFO L175 Difference]: Start difference. First operand has 95 places, 102 transitions, 345 flow. Second operand 4 states and 242 transitions. [2024-10-13 16:45:09,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 137 transitions, 629 flow [2024-10-13 16:45:09,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 137 transitions, 622 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:45:09,731 INFO L231 Difference]: Finished difference. Result has 98 places, 104 transitions, 372 flow [2024-10-13 16:45:09,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=372, PETRI_PLACES=98, PETRI_TRANSITIONS=104} [2024-10-13 16:45:09,733 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 19 predicate places. [2024-10-13 16:45:09,733 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 104 transitions, 372 flow [2024-10-13 16:45:09,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:09,734 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:09,734 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:09,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 16:45:09,734 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:09,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:09,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1743932735, now seen corresponding path program 1 times [2024-10-13 16:45:09,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:09,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414365410] [2024-10-13 16:45:09,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:09,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:09,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:09,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:09,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414365410] [2024-10-13 16:45:09,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414365410] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:09,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:09,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:45:09,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933476894] [2024-10-13 16:45:09,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:09,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:45:09,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:09,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:45:09,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:45:09,822 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2024-10-13 16:45:09,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 104 transitions, 372 flow. Second operand has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:09,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:09,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2024-10-13 16:45:09,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:10,356 INFO L124 PetriNetUnfolderBase]: 2710/7016 cut-off events. [2024-10-13 16:45:10,356 INFO L125 PetriNetUnfolderBase]: For 1438/1526 co-relation queries the response was YES. [2024-10-13 16:45:10,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12867 conditions, 7016 events. 2710/7016 cut-off events. For 1438/1526 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 66147 event pairs, 1668 based on Foata normal form. 56/5737 useless extension candidates. Maximal degree in co-relation 12850. Up to 3531 conditions per place. [2024-10-13 16:45:10,392 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 109 selfloop transitions, 4 changer transitions 6/157 dead transitions. [2024-10-13 16:45:10,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 157 transitions, 767 flow [2024-10-13 16:45:10,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:45:10,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:45:10,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 313 transitions. [2024-10-13 16:45:10,394 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.727906976744186 [2024-10-13 16:45:10,394 INFO L175 Difference]: Start difference. First operand has 98 places, 104 transitions, 372 flow. Second operand 5 states and 313 transitions. [2024-10-13 16:45:10,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 157 transitions, 767 flow [2024-10-13 16:45:10,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 157 transitions, 767 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:45:10,403 INFO L231 Difference]: Finished difference. Result has 104 places, 105 transitions, 391 flow [2024-10-13 16:45:10,403 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=391, PETRI_PLACES=104, PETRI_TRANSITIONS=105} [2024-10-13 16:45:10,404 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 25 predicate places. [2024-10-13 16:45:10,406 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 105 transitions, 391 flow [2024-10-13 16:45:10,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.6) internal successors, (238), 5 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:10,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:10,406 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:10,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 16:45:10,407 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:10,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:10,407 INFO L85 PathProgramCache]: Analyzing trace with hash -926162940, now seen corresponding path program 1 times [2024-10-13 16:45:10,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:10,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526728030] [2024-10-13 16:45:10,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:10,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:10,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:10,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:10,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526728030] [2024-10-13 16:45:10,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526728030] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:10,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:10,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:45:10,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615277609] [2024-10-13 16:45:10,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:10,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:10,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:10,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:10,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:10,450 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-10-13 16:45:10,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 105 transitions, 391 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:10,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:10,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-10-13 16:45:10,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:11,293 INFO L124 PetriNetUnfolderBase]: 5248/12540 cut-off events. [2024-10-13 16:45:11,293 INFO L125 PetriNetUnfolderBase]: For 3539/3851 co-relation queries the response was YES. [2024-10-13 16:45:11,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23651 conditions, 12540 events. 5248/12540 cut-off events. For 3539/3851 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 123031 event pairs, 2066 based on Foata normal form. 266/10647 useless extension candidates. Maximal degree in co-relation 23630. Up to 4515 conditions per place. [2024-10-13 16:45:11,355 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 117 selfloop transitions, 3 changer transitions 0/156 dead transitions. [2024-10-13 16:45:11,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 156 transitions, 815 flow [2024-10-13 16:45:11,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:11,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:11,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 259 transitions. [2024-10-13 16:45:11,357 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.752906976744186 [2024-10-13 16:45:11,357 INFO L175 Difference]: Start difference. First operand has 104 places, 105 transitions, 391 flow. Second operand 4 states and 259 transitions. [2024-10-13 16:45:11,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 156 transitions, 815 flow [2024-10-13 16:45:11,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 156 transitions, 810 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:45:11,364 INFO L231 Difference]: Finished difference. Result has 107 places, 107 transitions, 408 flow [2024-10-13 16:45:11,365 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=408, PETRI_PLACES=107, PETRI_TRANSITIONS=107} [2024-10-13 16:45:11,365 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 28 predicate places. [2024-10-13 16:45:11,365 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 107 transitions, 408 flow [2024-10-13 16:45:11,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:11,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:11,366 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:11,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 16:45:11,366 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:11,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:11,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1353721788, now seen corresponding path program 1 times [2024-10-13 16:45:11,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:11,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532799811] [2024-10-13 16:45:11,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:11,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:11,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:11,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:11,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532799811] [2024-10-13 16:45:11,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532799811] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:11,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:11,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:45:11,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681936455] [2024-10-13 16:45:11,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:11,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:11,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:11,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:11,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:11,421 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-10-13 16:45:11,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 107 transitions, 408 flow. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:11,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:11,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-10-13 16:45:11,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:12,880 INFO L124 PetriNetUnfolderBase]: 8576/18760 cut-off events. [2024-10-13 16:45:12,881 INFO L125 PetriNetUnfolderBase]: For 6704/7080 co-relation queries the response was YES. [2024-10-13 16:45:13,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38473 conditions, 18760 events. 8576/18760 cut-off events. For 6704/7080 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 185993 event pairs, 3382 based on Foata normal form. 656/16975 useless extension candidates. Maximal degree in co-relation 38451. Up to 7339 conditions per place. [2024-10-13 16:45:13,075 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 113 selfloop transitions, 5 changer transitions 0/150 dead transitions. [2024-10-13 16:45:13,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 150 transitions, 812 flow [2024-10-13 16:45:13,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:13,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:13,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 240 transitions. [2024-10-13 16:45:13,077 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6976744186046512 [2024-10-13 16:45:13,077 INFO L175 Difference]: Start difference. First operand has 107 places, 107 transitions, 408 flow. Second operand 4 states and 240 transitions. [2024-10-13 16:45:13,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 150 transitions, 812 flow [2024-10-13 16:45:13,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 150 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:45:13,142 INFO L231 Difference]: Finished difference. Result has 111 places, 109 transitions, 440 flow [2024-10-13 16:45:13,142 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=440, PETRI_PLACES=111, PETRI_TRANSITIONS=109} [2024-10-13 16:45:13,144 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 32 predicate places. [2024-10-13 16:45:13,144 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 109 transitions, 440 flow [2024-10-13 16:45:13,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:13,145 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:13,145 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:13,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 16:45:13,148 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:13,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:13,148 INFO L85 PathProgramCache]: Analyzing trace with hash -984296695, now seen corresponding path program 1 times [2024-10-13 16:45:13,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:13,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429298569] [2024-10-13 16:45:13,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:13,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:13,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:13,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:13,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429298569] [2024-10-13 16:45:13,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429298569] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:13,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:13,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:45:13,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469281510] [2024-10-13 16:45:13,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:13,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:45:13,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:13,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:45:13,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:45:13,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2024-10-13 16:45:13,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 109 transitions, 440 flow. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:13,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:13,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2024-10-13 16:45:13,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:14,489 INFO L124 PetriNetUnfolderBase]: 5550/13978 cut-off events. [2024-10-13 16:45:14,489 INFO L125 PetriNetUnfolderBase]: For 6492/6896 co-relation queries the response was YES. [2024-10-13 16:45:14,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29601 conditions, 13978 events. 5550/13978 cut-off events. For 6492/6896 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 146387 event pairs, 3746 based on Foata normal form. 216/12613 useless extension candidates. Maximal degree in co-relation 29577. Up to 7943 conditions per place. [2024-10-13 16:45:14,620 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 77 selfloop transitions, 3 changer transitions 24/142 dead transitions. [2024-10-13 16:45:14,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 142 transitions, 770 flow [2024-10-13 16:45:14,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:45:14,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:45:14,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 294 transitions. [2024-10-13 16:45:14,622 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6837209302325581 [2024-10-13 16:45:14,622 INFO L175 Difference]: Start difference. First operand has 111 places, 109 transitions, 440 flow. Second operand 5 states and 294 transitions. [2024-10-13 16:45:14,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 142 transitions, 770 flow [2024-10-13 16:45:14,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 142 transitions, 770 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:45:14,681 INFO L231 Difference]: Finished difference. Result has 117 places, 108 transitions, 443 flow [2024-10-13 16:45:14,681 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=443, PETRI_PLACES=117, PETRI_TRANSITIONS=108} [2024-10-13 16:45:14,682 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2024-10-13 16:45:14,682 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 108 transitions, 443 flow [2024-10-13 16:45:14,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:14,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:14,682 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:14,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 16:45:14,683 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:14,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:14,683 INFO L85 PathProgramCache]: Analyzing trace with hash 201386372, now seen corresponding path program 1 times [2024-10-13 16:45:14,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:14,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299445792] [2024-10-13 16:45:14,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:14,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:14,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:45:14,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:14,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299445792] [2024-10-13 16:45:14,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299445792] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:14,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:14,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:45:14,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794598949] [2024-10-13 16:45:14,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:14,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:45:14,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:14,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:45:14,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:45:14,799 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2024-10-13 16:45:14,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 108 transitions, 443 flow. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:14,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:14,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2024-10-13 16:45:14,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:15,542 INFO L124 PetriNetUnfolderBase]: 3144/8019 cut-off events. [2024-10-13 16:45:15,542 INFO L125 PetriNetUnfolderBase]: For 3854/4050 co-relation queries the response was YES. [2024-10-13 16:45:15,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17129 conditions, 8019 events. 3144/8019 cut-off events. For 3854/4050 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 76216 event pairs, 2038 based on Foata normal form. 152/7384 useless extension candidates. Maximal degree in co-relation 17101. Up to 3999 conditions per place. [2024-10-13 16:45:15,594 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 100 selfloop transitions, 8 changer transitions 8/154 dead transitions. [2024-10-13 16:45:15,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 154 transitions, 845 flow [2024-10-13 16:45:15,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:45:15,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:45:15,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 310 transitions. [2024-10-13 16:45:15,596 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7209302325581395 [2024-10-13 16:45:15,596 INFO L175 Difference]: Start difference. First operand has 117 places, 108 transitions, 443 flow. Second operand 5 states and 310 transitions. [2024-10-13 16:45:15,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 154 transitions, 845 flow [2024-10-13 16:45:15,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 154 transitions, 832 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-13 16:45:15,621 INFO L231 Difference]: Finished difference. Result has 117 places, 109 transitions, 463 flow [2024-10-13 16:45:15,621 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=463, PETRI_PLACES=117, PETRI_TRANSITIONS=109} [2024-10-13 16:45:15,622 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2024-10-13 16:45:15,622 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 109 transitions, 463 flow [2024-10-13 16:45:15,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:15,623 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:15,624 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-13 16:45:15,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 16:45:15,624 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:15,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:15,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1739977591, now seen corresponding path program 2 times [2024-10-13 16:45:15,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:15,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059469733] [2024-10-13 16:45:15,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:15,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:15,743 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:15,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:15,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059469733] [2024-10-13 16:45:15,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059469733] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:15,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354150345] [2024-10-13 16:45:15,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:45:15,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:15,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:15,747 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:45:15,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 16:45:15,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:45:15,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:45:15,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 16:45:15,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:15,835 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:45:15,835 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:15,858 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-13 16:45:15,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354150345] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:15,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:15,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-13 16:45:15,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534064655] [2024-10-13 16:45:15,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:15,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 16:45:15,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:15,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 16:45:15,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-13 16:45:15,886 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-10-13 16:45:15,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 109 transitions, 463 flow. Second operand has 14 states, 14 states have (on average 43.142857142857146) internal successors, (604), 14 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:15,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:15,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-10-13 16:45:15,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:16,792 INFO L124 PetriNetUnfolderBase]: 3149/8118 cut-off events. [2024-10-13 16:45:16,792 INFO L125 PetriNetUnfolderBase]: For 4224/4418 co-relation queries the response was YES. [2024-10-13 16:45:16,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17311 conditions, 8118 events. 3149/8118 cut-off events. For 4224/4418 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 77431 event pairs, 2189 based on Foata normal form. 102/7316 useless extension candidates. Maximal degree in co-relation 17284. Up to 4659 conditions per place. [2024-10-13 16:45:16,847 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 44 selfloop transitions, 34 changer transitions 0/114 dead transitions. [2024-10-13 16:45:16,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 114 transitions, 641 flow [2024-10-13 16:45:16,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-13 16:45:16,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-13 16:45:16,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1080 transitions. [2024-10-13 16:45:16,851 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5232558139534884 [2024-10-13 16:45:16,851 INFO L175 Difference]: Start difference. First operand has 117 places, 109 transitions, 463 flow. Second operand 24 states and 1080 transitions. [2024-10-13 16:45:16,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 114 transitions, 641 flow [2024-10-13 16:45:16,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 114 transitions, 626 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:45:16,873 INFO L231 Difference]: Finished difference. Result has 139 places, 114 transitions, 551 flow [2024-10-13 16:45:16,873 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=551, PETRI_PLACES=139, PETRI_TRANSITIONS=114} [2024-10-13 16:45:16,874 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 60 predicate places. [2024-10-13 16:45:16,874 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 114 transitions, 551 flow [2024-10-13 16:45:16,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 43.142857142857146) internal successors, (604), 14 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:16,875 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:16,875 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:16,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 16:45:17,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 16:45:17,076 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:17,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:17,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1607634418, now seen corresponding path program 1 times [2024-10-13 16:45:17,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:17,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353562481] [2024-10-13 16:45:17,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:17,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:17,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:45:17,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:17,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353562481] [2024-10-13 16:45:17,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353562481] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:17,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:17,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:45:17,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993242329] [2024-10-13 16:45:17,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:17,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:45:17,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:17,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:45:17,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:45:17,177 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 86 [2024-10-13 16:45:17,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 114 transitions, 551 flow. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:17,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:17,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 86 [2024-10-13 16:45:17,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:17,980 INFO L124 PetriNetUnfolderBase]: 2784/7046 cut-off events. [2024-10-13 16:45:17,980 INFO L125 PetriNetUnfolderBase]: For 3650/3844 co-relation queries the response was YES. [2024-10-13 16:45:17,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15161 conditions, 7046 events. 2784/7046 cut-off events. For 3650/3844 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 65596 event pairs, 1873 based on Foata normal form. 100/6330 useless extension candidates. Maximal degree in co-relation 15131. Up to 4007 conditions per place. [2024-10-13 16:45:18,008 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 68 selfloop transitions, 7 changer transitions 20/132 dead transitions. [2024-10-13 16:45:18,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 132 transitions, 794 flow [2024-10-13 16:45:18,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:45:18,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:45:18,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 291 transitions. [2024-10-13 16:45:18,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6767441860465117 [2024-10-13 16:45:18,009 INFO L175 Difference]: Start difference. First operand has 139 places, 114 transitions, 551 flow. Second operand 5 states and 291 transitions. [2024-10-13 16:45:18,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 132 transitions, 794 flow [2024-10-13 16:45:18,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 132 transitions, 694 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-10-13 16:45:18,022 INFO L231 Difference]: Finished difference. Result has 133 places, 112 transitions, 452 flow [2024-10-13 16:45:18,022 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=133, PETRI_TRANSITIONS=112} [2024-10-13 16:45:18,023 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 54 predicate places. [2024-10-13 16:45:18,023 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 112 transitions, 452 flow [2024-10-13 16:45:18,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 5 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:18,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:18,023 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:18,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 16:45:18,024 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:18,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:18,024 INFO L85 PathProgramCache]: Analyzing trace with hash 93826439, now seen corresponding path program 1 times [2024-10-13 16:45:18,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:18,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126287126] [2024-10-13 16:45:18,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:18,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:18,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:45:18,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:18,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126287126] [2024-10-13 16:45:18,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126287126] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:18,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989362590] [2024-10-13 16:45:18,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:18,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:18,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:18,266 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:45:18,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 16:45:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:18,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-13 16:45:18,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:18,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 16:45:18,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-13 16:45:18,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:45:18,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:18,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-10-13 16:45:18,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-13 16:45:18,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:45:18,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989362590] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:18,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:18,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-13 16:45:18,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119460334] [2024-10-13 16:45:18,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:18,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 16:45:18,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:18,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 16:45:18,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-10-13 16:45:18,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 86 [2024-10-13 16:45:18,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 112 transitions, 452 flow. Second operand has 15 states, 15 states have (on average 45.06666666666667) internal successors, (676), 15 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:18,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:18,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 86 [2024-10-13 16:45:18,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:19,360 INFO L124 PetriNetUnfolderBase]: 3118/7302 cut-off events. [2024-10-13 16:45:19,360 INFO L125 PetriNetUnfolderBase]: For 4109/4404 co-relation queries the response was YES. [2024-10-13 16:45:19,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16243 conditions, 7302 events. 3118/7302 cut-off events. For 4109/4404 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 65717 event pairs, 758 based on Foata normal form. 118/6746 useless extension candidates. Maximal degree in co-relation 16214. Up to 1675 conditions per place. [2024-10-13 16:45:19,415 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 148 selfloop transitions, 25 changer transitions 0/208 dead transitions. [2024-10-13 16:45:19,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 208 transitions, 1167 flow [2024-10-13 16:45:19,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:45:19,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:45:19,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 558 transitions. [2024-10-13 16:45:19,417 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6488372093023256 [2024-10-13 16:45:19,417 INFO L175 Difference]: Start difference. First operand has 133 places, 112 transitions, 452 flow. Second operand 10 states and 558 transitions. [2024-10-13 16:45:19,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 208 transitions, 1167 flow [2024-10-13 16:45:19,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 208 transitions, 1127 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-10-13 16:45:19,437 INFO L231 Difference]: Finished difference. Result has 134 places, 119 transitions, 542 flow [2024-10-13 16:45:19,437 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=542, PETRI_PLACES=134, PETRI_TRANSITIONS=119} [2024-10-13 16:45:19,438 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 55 predicate places. [2024-10-13 16:45:19,438 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 119 transitions, 542 flow [2024-10-13 16:45:19,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 45.06666666666667) internal successors, (676), 15 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:19,438 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:19,438 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:19,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 16:45:19,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 16:45:19,643 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:19,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:19,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1386378654, now seen corresponding path program 1 times [2024-10-13 16:45:19,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:19,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835011360] [2024-10-13 16:45:19,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:19,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:19,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:45:19,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:19,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835011360] [2024-10-13 16:45:19,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835011360] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:19,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416087364] [2024-10-13 16:45:19,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:19,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:19,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:19,870 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:45:19,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 16:45:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:19,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-13 16:45:19,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:19,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 16:45:20,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-13 16:45:20,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:45:20,027 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:20,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 16:45:20,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-10-13 16:45:20,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:45:20,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416087364] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:20,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:20,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-13 16:45:20,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641029864] [2024-10-13 16:45:20,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:20,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 16:45:20,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:20,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 16:45:20,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-10-13 16:45:20,159 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 86 [2024-10-13 16:45:20,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 119 transitions, 542 flow. Second operand has 15 states, 15 states have (on average 43.2) internal successors, (648), 15 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:20,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:20,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 86 [2024-10-13 16:45:20,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:20,964 INFO L124 PetriNetUnfolderBase]: 3658/8181 cut-off events. [2024-10-13 16:45:20,964 INFO L125 PetriNetUnfolderBase]: For 7001/7290 co-relation queries the response was YES. [2024-10-13 16:45:20,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19323 conditions, 8181 events. 3658/8181 cut-off events. For 7001/7290 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 72281 event pairs, 1177 based on Foata normal form. 176/7395 useless extension candidates. Maximal degree in co-relation 19294. Up to 2109 conditions per place. [2024-10-13 16:45:21,016 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 152 selfloop transitions, 25 changer transitions 0/209 dead transitions. [2024-10-13 16:45:21,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 209 transitions, 1221 flow [2024-10-13 16:45:21,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:45:21,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:45:21,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 538 transitions. [2024-10-13 16:45:21,017 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6255813953488372 [2024-10-13 16:45:21,017 INFO L175 Difference]: Start difference. First operand has 134 places, 119 transitions, 542 flow. Second operand 10 states and 538 transitions. [2024-10-13 16:45:21,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 209 transitions, 1221 flow [2024-10-13 16:45:21,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 209 transitions, 1206 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-13 16:45:21,038 INFO L231 Difference]: Finished difference. Result has 142 places, 121 transitions, 603 flow [2024-10-13 16:45:21,038 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=603, PETRI_PLACES=142, PETRI_TRANSITIONS=121} [2024-10-13 16:45:21,039 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 63 predicate places. [2024-10-13 16:45:21,039 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 121 transitions, 603 flow [2024-10-13 16:45:21,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 43.2) internal successors, (648), 15 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:21,039 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:21,039 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-10-13 16:45:21,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-13 16:45:21,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-13 16:45:21,244 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:21,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:21,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1527489979, now seen corresponding path program 1 times [2024-10-13 16:45:21,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:21,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270241007] [2024-10-13 16:45:21,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:21,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:21,393 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:21,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:21,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270241007] [2024-10-13 16:45:21,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270241007] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:21,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188040681] [2024-10-13 16:45:21,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:21,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:21,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:21,398 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:45:21,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 16:45:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:21,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 16:45:21,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:21,497 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:21,498 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:21,629 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:21,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188040681] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:21,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:21,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-10-13 16:45:21,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569719684] [2024-10-13 16:45:21,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:21,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-13 16:45:21,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:21,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-13 16:45:21,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-10-13 16:45:21,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 86 [2024-10-13 16:45:21,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 121 transitions, 603 flow. Second operand has 28 states, 28 states have (on average 43.07142857142857) internal successors, (1206), 28 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:21,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:21,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 86 [2024-10-13 16:45:21,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:22,333 INFO L124 PetriNetUnfolderBase]: 2852/7473 cut-off events. [2024-10-13 16:45:22,334 INFO L125 PetriNetUnfolderBase]: For 8593/8771 co-relation queries the response was YES. [2024-10-13 16:45:22,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17826 conditions, 7473 events. 2852/7473 cut-off events. For 8593/8771 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 72223 event pairs, 1982 based on Foata normal form. 122/6625 useless extension candidates. Maximal degree in co-relation 17795. Up to 4222 conditions per place. [2024-10-13 16:45:22,385 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 52 selfloop transitions, 72 changer transitions 0/163 dead transitions. [2024-10-13 16:45:22,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 163 transitions, 1131 flow [2024-10-13 16:45:22,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-13 16:45:22,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-13 16:45:22,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1209 transitions. [2024-10-13 16:45:22,387 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5406976744186046 [2024-10-13 16:45:22,387 INFO L175 Difference]: Start difference. First operand has 142 places, 121 transitions, 603 flow. Second operand 26 states and 1209 transitions. [2024-10-13 16:45:22,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 163 transitions, 1131 flow [2024-10-13 16:45:22,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 163 transitions, 1072 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-10-13 16:45:22,409 INFO L231 Difference]: Finished difference. Result has 167 places, 163 transitions, 1020 flow [2024-10-13 16:45:22,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1020, PETRI_PLACES=167, PETRI_TRANSITIONS=163} [2024-10-13 16:45:22,410 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 88 predicate places. [2024-10-13 16:45:22,410 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 163 transitions, 1020 flow [2024-10-13 16:45:22,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 43.07142857142857) internal successors, (1206), 28 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:22,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:22,411 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:22,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 16:45:22,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:22,615 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:22,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:22,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1893514927, now seen corresponding path program 1 times [2024-10-13 16:45:22,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:22,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005478479] [2024-10-13 16:45:22,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:22,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:23,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:23,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:23,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005478479] [2024-10-13 16:45:23,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005478479] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:23,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042254422] [2024-10-13 16:45:23,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:23,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:23,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:23,074 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:45:23,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 16:45:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:23,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-13 16:45:23,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:23,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-13 16:45:23,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 16:45:23,201 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-13 16:45:23,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-13 16:45:23,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-13 16:45:23,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-13 16:45:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:23,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:23,413 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:45:23,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-10-13 16:45:23,420 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:45:23,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2024-10-13 16:45:23,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-10-13 16:45:23,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:23,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042254422] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:23,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:23,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 19 [2024-10-13 16:45:23,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046640679] [2024-10-13 16:45:23,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:23,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-13 16:45:23,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:23,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-13 16:45:23,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=351, Unknown=3, NotChecked=0, Total=420 [2024-10-13 16:45:23,636 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2024-10-13 16:45:23,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 163 transitions, 1020 flow. Second operand has 21 states, 21 states have (on average 27.61904761904762) internal successors, (580), 21 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:23,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:23,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2024-10-13 16:45:23,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:25,766 INFO L124 PetriNetUnfolderBase]: 11573/20463 cut-off events. [2024-10-13 16:45:25,766 INFO L125 PetriNetUnfolderBase]: For 24601/25981 co-relation queries the response was YES. [2024-10-13 16:45:25,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54589 conditions, 20463 events. 11573/20463 cut-off events. For 24601/25981 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 167599 event pairs, 2686 based on Foata normal form. 600/19079 useless extension candidates. Maximal degree in co-relation 54552. Up to 3021 conditions per place. [2024-10-13 16:45:26,066 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 465 selfloop transitions, 67 changer transitions 16/574 dead transitions. [2024-10-13 16:45:26,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 574 transitions, 4504 flow [2024-10-13 16:45:26,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-13 16:45:26,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-13 16:45:26,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 915 transitions. [2024-10-13 16:45:26,068 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4433139534883721 [2024-10-13 16:45:26,068 INFO L175 Difference]: Start difference. First operand has 167 places, 163 transitions, 1020 flow. Second operand 24 states and 915 transitions. [2024-10-13 16:45:26,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 574 transitions, 4504 flow [2024-10-13 16:45:26,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 574 transitions, 4043 flow, removed 162 selfloop flow, removed 12 redundant places. [2024-10-13 16:45:26,172 INFO L231 Difference]: Finished difference. Result has 184 places, 197 transitions, 1257 flow [2024-10-13 16:45:26,172 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1257, PETRI_PLACES=184, PETRI_TRANSITIONS=197} [2024-10-13 16:45:26,173 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 105 predicate places. [2024-10-13 16:45:26,173 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 197 transitions, 1257 flow [2024-10-13 16:45:26,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 27.61904761904762) internal successors, (580), 21 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:26,173 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:26,173 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:26,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 16:45:26,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:26,374 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:26,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:26,374 INFO L85 PathProgramCache]: Analyzing trace with hash 3439418, now seen corresponding path program 1 times [2024-10-13 16:45:26,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:26,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84221167] [2024-10-13 16:45:26,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:26,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:26,424 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:45:26,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:26,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84221167] [2024-10-13 16:45:26,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84221167] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:26,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776014647] [2024-10-13 16:45:26,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:26,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:26,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:26,430 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:45:26,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 16:45:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:26,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 16:45:26,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:26,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:45:26,589 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:26,678 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:45:26,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776014647] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:26,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:26,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-10-13 16:45:26,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767772053] [2024-10-13 16:45:26,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:26,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 16:45:26,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:26,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 16:45:26,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-13 16:45:26,985 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-10-13 16:45:26,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 197 transitions, 1257 flow. Second operand has 19 states, 19 states have (on average 42.21052631578947) internal successors, (802), 19 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:26,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:26,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-10-13 16:45:26,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:28,936 INFO L124 PetriNetUnfolderBase]: 4853/11764 cut-off events. [2024-10-13 16:45:28,936 INFO L125 PetriNetUnfolderBase]: For 17942/18384 co-relation queries the response was YES. [2024-10-13 16:45:29,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30658 conditions, 11764 events. 4853/11764 cut-off events. For 17942/18384 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 116306 event pairs, 1154 based on Foata normal form. 270/10698 useless extension candidates. Maximal degree in co-relation 30616. Up to 2096 conditions per place. [2024-10-13 16:45:29,067 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 330 selfloop transitions, 65 changer transitions 14/448 dead transitions. [2024-10-13 16:45:29,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 448 transitions, 3434 flow [2024-10-13 16:45:29,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 16:45:29,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-13 16:45:29,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 894 transitions. [2024-10-13 16:45:29,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6114911080711354 [2024-10-13 16:45:29,069 INFO L175 Difference]: Start difference. First operand has 184 places, 197 transitions, 1257 flow. Second operand 17 states and 894 transitions. [2024-10-13 16:45:29,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 448 transitions, 3434 flow [2024-10-13 16:45:29,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 448 transitions, 3308 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-10-13 16:45:29,141 INFO L231 Difference]: Finished difference. Result has 192 places, 224 transitions, 1590 flow [2024-10-13 16:45:29,141 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1590, PETRI_PLACES=192, PETRI_TRANSITIONS=224} [2024-10-13 16:45:29,141 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 113 predicate places. [2024-10-13 16:45:29,142 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 224 transitions, 1590 flow [2024-10-13 16:45:29,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 42.21052631578947) internal successors, (802), 19 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:29,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:29,142 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:29,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-13 16:45:29,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:29,343 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:29,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:29,344 INFO L85 PathProgramCache]: Analyzing trace with hash -28065527, now seen corresponding path program 1 times [2024-10-13 16:45:29,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:29,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776764219] [2024-10-13 16:45:29,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:29,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:29,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:29,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:29,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776764219] [2024-10-13 16:45:29,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776764219] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:29,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011538387] [2024-10-13 16:45:29,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:29,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:29,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:29,850 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:45:29,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 16:45:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:29,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-13 16:45:29,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:29,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-13 16:45:30,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 16:45:30,032 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-13 16:45:30,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-13 16:45:30,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-13 16:45:30,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-13 16:45:30,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:30,202 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:30,286 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_234 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_234) c_~a1~0.base) c_~a1~0.offset)))) is different from false [2024-10-13 16:45:30,378 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:45:30,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-10-13 16:45:30,388 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:45:30,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2024-10-13 16:45:30,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-10-13 16:45:30,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-10-13 16:45:30,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011538387] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:30,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:30,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 19 [2024-10-13 16:45:30,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988761806] [2024-10-13 16:45:30,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:30,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-13 16:45:30,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:30,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-13 16:45:30,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=327, Unknown=1, NotChecked=36, Total=420 [2024-10-13 16:45:30,507 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 86 [2024-10-13 16:45:30,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 224 transitions, 1590 flow. Second operand has 21 states, 21 states have (on average 25.333333333333332) internal successors, (532), 21 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:30,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:30,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 86 [2024-10-13 16:45:30,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:33,187 INFO L124 PetriNetUnfolderBase]: 8564/15865 cut-off events. [2024-10-13 16:45:33,188 INFO L125 PetriNetUnfolderBase]: For 24461/25588 co-relation queries the response was YES. [2024-10-13 16:45:33,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45007 conditions, 15865 events. 8564/15865 cut-off events. For 24461/25588 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 130708 event pairs, 1726 based on Foata normal form. 497/15181 useless extension candidates. Maximal degree in co-relation 44964. Up to 2896 conditions per place. [2024-10-13 16:45:33,340 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 605 selfloop transitions, 71 changer transitions 0/698 dead transitions. [2024-10-13 16:45:33,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 698 transitions, 5410 flow [2024-10-13 16:45:33,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-13 16:45:33,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-10-13 16:45:33,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1093 transitions. [2024-10-13 16:45:33,343 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4236434108527132 [2024-10-13 16:45:33,343 INFO L175 Difference]: Start difference. First operand has 192 places, 224 transitions, 1590 flow. Second operand 30 states and 1093 transitions. [2024-10-13 16:45:33,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 698 transitions, 5410 flow [2024-10-13 16:45:33,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 698 transitions, 5384 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-10-13 16:45:33,434 INFO L231 Difference]: Finished difference. Result has 219 places, 235 transitions, 1809 flow [2024-10-13 16:45:33,434 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1809, PETRI_PLACES=219, PETRI_TRANSITIONS=235} [2024-10-13 16:45:33,434 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 140 predicate places. [2024-10-13 16:45:33,434 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 235 transitions, 1809 flow [2024-10-13 16:45:33,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 25.333333333333332) internal successors, (532), 21 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:33,435 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:33,435 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:33,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 16:45:33,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-13 16:45:33,637 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:33,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:33,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1430548472, now seen corresponding path program 1 times [2024-10-13 16:45:33,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:33,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269384510] [2024-10-13 16:45:33,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:33,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:34,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:34,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:34,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269384510] [2024-10-13 16:45:34,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269384510] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:34,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502348751] [2024-10-13 16:45:34,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:34,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:34,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:34,179 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:45:34,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 16:45:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:34,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-13 16:45:34,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:34,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-13 16:45:34,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 16:45:34,305 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-13 16:45:34,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-13 16:45:34,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-13 16:45:34,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-13 16:45:34,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:34,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:34,443 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_254 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_254) c_~a1~0.base) c_~a1~0.offset) 4294967296))) is different from false [2024-10-13 16:45:34,522 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:45:34,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-10-13 16:45:34,528 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:45:34,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2024-10-13 16:45:34,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-10-13 16:45:34,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-10-13 16:45:34,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502348751] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:34,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:34,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 19 [2024-10-13 16:45:34,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266039830] [2024-10-13 16:45:34,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:34,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-13 16:45:34,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:34,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-13 16:45:34,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=319, Unknown=1, NotChecked=36, Total=420 [2024-10-13 16:45:34,570 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2024-10-13 16:45:34,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 235 transitions, 1809 flow. Second operand has 21 states, 21 states have (on average 27.61904761904762) internal successors, (580), 21 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:34,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:34,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2024-10-13 16:45:34,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:36,519 INFO L124 PetriNetUnfolderBase]: 9172/16435 cut-off events. [2024-10-13 16:45:36,519 INFO L125 PetriNetUnfolderBase]: For 37496/38166 co-relation queries the response was YES. [2024-10-13 16:45:36,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49496 conditions, 16435 events. 9172/16435 cut-off events. For 37496/38166 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 130209 event pairs, 2758 based on Foata normal form. 294/15585 useless extension candidates. Maximal degree in co-relation 49447. Up to 3417 conditions per place. [2024-10-13 16:45:36,642 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 423 selfloop transitions, 67 changer transitions 0/518 dead transitions. [2024-10-13 16:45:36,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 518 transitions, 4442 flow [2024-10-13 16:45:36,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-13 16:45:36,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-13 16:45:36,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 892 transitions. [2024-10-13 16:45:36,645 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4321705426356589 [2024-10-13 16:45:36,645 INFO L175 Difference]: Start difference. First operand has 219 places, 235 transitions, 1809 flow. Second operand 24 states and 892 transitions. [2024-10-13 16:45:36,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 518 transitions, 4442 flow [2024-10-13 16:45:36,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 518 transitions, 4192 flow, removed 25 selfloop flow, removed 17 redundant places. [2024-10-13 16:45:36,735 INFO L231 Difference]: Finished difference. Result has 229 places, 241 transitions, 1909 flow [2024-10-13 16:45:36,735 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1691, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1909, PETRI_PLACES=229, PETRI_TRANSITIONS=241} [2024-10-13 16:45:36,735 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 150 predicate places. [2024-10-13 16:45:36,736 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 241 transitions, 1909 flow [2024-10-13 16:45:36,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 27.61904761904762) internal successors, (580), 21 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:36,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:36,736 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:36,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-13 16:45:36,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-13 16:45:36,937 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:36,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:36,938 INFO L85 PathProgramCache]: Analyzing trace with hash -870030523, now seen corresponding path program 1 times [2024-10-13 16:45:36,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:36,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971951910] [2024-10-13 16:45:36,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:36,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:37,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:37,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:37,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971951910] [2024-10-13 16:45:37,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971951910] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:37,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581680057] [2024-10-13 16:45:37,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:37,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:37,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:37,343 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:45:37,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 16:45:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:37,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-13 16:45:37,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:37,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-13 16:45:37,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 16:45:37,457 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-13 16:45:37,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-13 16:45:37,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-13 16:45:37,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-13 16:45:37,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:37,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:37,606 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_273 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_273) c_~a1~0.base) c_~a1~0.offset) 2147483648)) is different from false [2024-10-13 16:45:37,642 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:45:37,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-10-13 16:45:37,647 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:45:37,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2024-10-13 16:45:37,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-10-13 16:45:37,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-10-13 16:45:37,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581680057] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:37,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:37,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2024-10-13 16:45:37,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728478102] [2024-10-13 16:45:37,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:37,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-13 16:45:37,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:37,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-13 16:45:37,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=399, Unknown=1, NotChecked=40, Total=506 [2024-10-13 16:45:37,720 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 86 [2024-10-13 16:45:37,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 241 transitions, 1909 flow. Second operand has 23 states, 23 states have (on average 25.217391304347824) internal successors, (580), 23 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:37,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:37,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 86 [2024-10-13 16:45:37,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:40,297 INFO L124 PetriNetUnfolderBase]: 9248/16350 cut-off events. [2024-10-13 16:45:40,297 INFO L125 PetriNetUnfolderBase]: For 32475/33383 co-relation queries the response was YES. [2024-10-13 16:45:40,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51044 conditions, 16350 events. 9248/16350 cut-off events. For 32475/33383 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 128836 event pairs, 2054 based on Foata normal form. 867/16156 useless extension candidates. Maximal degree in co-relation 50992. Up to 3359 conditions per place. [2024-10-13 16:45:40,477 INFO L140 encePairwiseOnDemand]: 67/86 looper letters, 608 selfloop transitions, 77 changer transitions 42/758 dead transitions. [2024-10-13 16:45:40,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 758 transitions, 6344 flow [2024-10-13 16:45:40,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-13 16:45:40,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-10-13 16:45:40,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1162 transitions. [2024-10-13 16:45:40,479 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42223837209302323 [2024-10-13 16:45:40,479 INFO L175 Difference]: Start difference. First operand has 229 places, 241 transitions, 1909 flow. Second operand 32 states and 1162 transitions. [2024-10-13 16:45:40,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 758 transitions, 6344 flow [2024-10-13 16:45:40,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 758 transitions, 6068 flow, removed 4 selfloop flow, removed 19 redundant places. [2024-10-13 16:45:40,592 INFO L231 Difference]: Finished difference. Result has 247 places, 254 transitions, 2067 flow [2024-10-13 16:45:40,593 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1809, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2067, PETRI_PLACES=247, PETRI_TRANSITIONS=254} [2024-10-13 16:45:40,593 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 168 predicate places. [2024-10-13 16:45:40,593 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 254 transitions, 2067 flow [2024-10-13 16:45:40,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 25.217391304347824) internal successors, (580), 23 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:40,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:40,594 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:40,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-13 16:45:40,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-13 16:45:40,797 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:40,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:40,798 INFO L85 PathProgramCache]: Analyzing trace with hash -253884111, now seen corresponding path program 1 times [2024-10-13 16:45:40,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:40,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065400963] [2024-10-13 16:45:40,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:40,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:40,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:45:40,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:40,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065400963] [2024-10-13 16:45:40,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065400963] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:40,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:40,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:45:40,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762084161] [2024-10-13 16:45:40,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:40,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:40,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:40,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:40,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:40,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-10-13 16:45:40,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 254 transitions, 2067 flow. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:40,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:40,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-10-13 16:45:40,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:42,055 INFO L124 PetriNetUnfolderBase]: 6281/13695 cut-off events. [2024-10-13 16:45:42,056 INFO L125 PetriNetUnfolderBase]: For 32855/33189 co-relation queries the response was YES. [2024-10-13 16:45:42,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42993 conditions, 13695 events. 6281/13695 cut-off events. For 32855/33189 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 128216 event pairs, 2748 based on Foata normal form. 404/13130 useless extension candidates. Maximal degree in co-relation 42937. Up to 5977 conditions per place. [2024-10-13 16:45:42,192 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 249 selfloop transitions, 14 changer transitions 15/322 dead transitions. [2024-10-13 16:45:42,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 322 transitions, 3048 flow [2024-10-13 16:45:42,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:42,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:42,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 237 transitions. [2024-10-13 16:45:42,195 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.688953488372093 [2024-10-13 16:45:42,195 INFO L175 Difference]: Start difference. First operand has 247 places, 254 transitions, 2067 flow. Second operand 4 states and 237 transitions. [2024-10-13 16:45:42,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 322 transitions, 3048 flow [2024-10-13 16:45:42,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 322 transitions, 2877 flow, removed 8 selfloop flow, removed 22 redundant places. [2024-10-13 16:45:42,347 INFO L231 Difference]: Finished difference. Result has 227 places, 245 transitions, 1853 flow [2024-10-13 16:45:42,347 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1865, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1853, PETRI_PLACES=227, PETRI_TRANSITIONS=245} [2024-10-13 16:45:42,347 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 148 predicate places. [2024-10-13 16:45:42,347 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 245 transitions, 1853 flow [2024-10-13 16:45:42,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:42,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:42,348 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:42,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-13 16:45:42,348 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:42,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:42,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1367733062, now seen corresponding path program 1 times [2024-10-13 16:45:42,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:42,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833101537] [2024-10-13 16:45:42,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:42,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:42,387 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:45:42,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:42,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833101537] [2024-10-13 16:45:42,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833101537] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:42,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314354] [2024-10-13 16:45:42,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:42,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:42,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:42,390 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:45:42,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 16:45:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:42,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 16:45:42,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:42,532 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:45:42,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:42,618 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:45:42,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314354] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:42,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:42,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-10-13 16:45:42,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752702720] [2024-10-13 16:45:42,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:42,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 16:45:42,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:42,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 16:45:42,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-13 16:45:42,878 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-10-13 16:45:42,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 245 transitions, 1853 flow. Second operand has 19 states, 19 states have (on average 42.421052631578945) internal successors, (806), 19 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:42,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:42,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-10-13 16:45:42,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:44,319 INFO L124 PetriNetUnfolderBase]: 4196/9872 cut-off events. [2024-10-13 16:45:44,319 INFO L125 PetriNetUnfolderBase]: For 22883/23383 co-relation queries the response was YES. [2024-10-13 16:45:44,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29002 conditions, 9872 events. 4196/9872 cut-off events. For 22883/23383 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 91615 event pairs, 132 based on Foata normal form. 208/9193 useless extension candidates. Maximal degree in co-relation 28950. Up to 2104 conditions per place. [2024-10-13 16:45:44,400 INFO L140 encePairwiseOnDemand]: 75/86 looper letters, 297 selfloop transitions, 63 changer transitions 44/447 dead transitions. [2024-10-13 16:45:44,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 447 transitions, 3910 flow [2024-10-13 16:45:44,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 16:45:44,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-13 16:45:44,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 884 transitions. [2024-10-13 16:45:44,402 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6046511627906976 [2024-10-13 16:45:44,402 INFO L175 Difference]: Start difference. First operand has 227 places, 245 transitions, 1853 flow. Second operand 17 states and 884 transitions. [2024-10-13 16:45:44,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 447 transitions, 3910 flow [2024-10-13 16:45:44,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 447 transitions, 3782 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-10-13 16:45:44,486 INFO L231 Difference]: Finished difference. Result has 233 places, 236 transitions, 1855 flow [2024-10-13 16:45:44,486 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1734, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1855, PETRI_PLACES=233, PETRI_TRANSITIONS=236} [2024-10-13 16:45:44,486 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 154 predicate places. [2024-10-13 16:45:44,487 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 236 transitions, 1855 flow [2024-10-13 16:45:44,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 42.421052631578945) internal successors, (806), 19 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:44,487 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:44,487 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:44,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-13 16:45:44,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-13 16:45:44,688 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:44,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:44,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1397329491, now seen corresponding path program 1 times [2024-10-13 16:45:44,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:44,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543669729] [2024-10-13 16:45:44,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:44,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:44,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:45:44,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:44,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543669729] [2024-10-13 16:45:44,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543669729] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:44,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777778016] [2024-10-13 16:45:44,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:44,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:44,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:44,842 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:45:44,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-13 16:45:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:44,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-13 16:45:44,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:44,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 16:45:44,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-13 16:45:44,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:45:44,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:45,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 16:45:45,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-10-13 16:45:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:45:45,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777778016] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:45,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:45,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-10-13 16:45:45,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437386634] [2024-10-13 16:45:45,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:45,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 16:45:45,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:45,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 16:45:45,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-10-13 16:45:45,142 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 86 [2024-10-13 16:45:45,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 236 transitions, 1855 flow. Second operand has 15 states, 15 states have (on average 39.46666666666667) internal successors, (592), 15 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:45,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:45,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 86 [2024-10-13 16:45:45,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:46,487 INFO L124 PetriNetUnfolderBase]: 6240/11678 cut-off events. [2024-10-13 16:45:46,487 INFO L125 PetriNetUnfolderBase]: For 27206/27956 co-relation queries the response was YES. [2024-10-13 16:45:46,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36706 conditions, 11678 events. 6240/11678 cut-off events. For 27206/27956 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 92406 event pairs, 1392 based on Foata normal form. 330/11547 useless extension candidates. Maximal degree in co-relation 36655. Up to 2956 conditions per place. [2024-10-13 16:45:46,585 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 480 selfloop transitions, 62 changer transitions 0/576 dead transitions. [2024-10-13 16:45:46,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 576 transitions, 5133 flow [2024-10-13 16:45:46,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 16:45:46,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 16:45:46,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 718 transitions. [2024-10-13 16:45:46,587 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5963455149501661 [2024-10-13 16:45:46,587 INFO L175 Difference]: Start difference. First operand has 233 places, 236 transitions, 1855 flow. Second operand 14 states and 718 transitions. [2024-10-13 16:45:46,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 576 transitions, 5133 flow [2024-10-13 16:45:46,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 576 transitions, 5054 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-10-13 16:45:46,653 INFO L231 Difference]: Finished difference. Result has 238 places, 240 transitions, 1975 flow [2024-10-13 16:45:46,653 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1975, PETRI_PLACES=238, PETRI_TRANSITIONS=240} [2024-10-13 16:45:46,653 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 159 predicate places. [2024-10-13 16:45:46,653 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 240 transitions, 1975 flow [2024-10-13 16:45:46,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 39.46666666666667) internal successors, (592), 15 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:46,654 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:46,654 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:46,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-13 16:45:46,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:46,854 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:46,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:46,855 INFO L85 PathProgramCache]: Analyzing trace with hash 367542107, now seen corresponding path program 1 times [2024-10-13 16:45:46,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:46,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859434381] [2024-10-13 16:45:46,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:46,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:47,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:45:47,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:47,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859434381] [2024-10-13 16:45:47,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859434381] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:47,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112749534] [2024-10-13 16:45:47,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:47,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:47,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:47,060 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:45:47,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-13 16:45:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:47,137 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-13 16:45:47,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:47,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 16:45:47,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-13 16:45:47,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:45:47,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:47,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-10-13 16:45:47,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-13 16:45:47,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:45:47,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112749534] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:47,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:47,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-13 16:45:47,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212067555] [2024-10-13 16:45:47,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:47,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 16:45:47,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:47,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 16:45:47,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-10-13 16:45:47,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 86 [2024-10-13 16:45:47,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 240 transitions, 1975 flow. Second operand has 16 states, 16 states have (on average 40.3125) internal successors, (645), 16 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:47,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:47,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 86 [2024-10-13 16:45:47,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:48,980 INFO L124 PetriNetUnfolderBase]: 6006/11460 cut-off events. [2024-10-13 16:45:48,980 INFO L125 PetriNetUnfolderBase]: For 30776/31512 co-relation queries the response was YES. [2024-10-13 16:45:49,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38544 conditions, 11460 events. 6006/11460 cut-off events. For 30776/31512 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 92419 event pairs, 1476 based on Foata normal form. 580/11525 useless extension candidates. Maximal degree in co-relation 38488. Up to 3112 conditions per place. [2024-10-13 16:45:49,082 INFO L140 encePairwiseOnDemand]: 67/86 looper letters, 431 selfloop transitions, 64 changer transitions 87/620 dead transitions. [2024-10-13 16:45:49,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 620 transitions, 5627 flow [2024-10-13 16:45:49,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 16:45:49,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 16:45:49,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 777 transitions. [2024-10-13 16:45:49,085 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6023255813953489 [2024-10-13 16:45:49,085 INFO L175 Difference]: Start difference. First operand has 238 places, 240 transitions, 1975 flow. Second operand 15 states and 777 transitions. [2024-10-13 16:45:49,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 620 transitions, 5627 flow [2024-10-13 16:45:49,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 620 transitions, 5535 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-10-13 16:45:49,168 INFO L231 Difference]: Finished difference. Result has 250 places, 247 transitions, 2096 flow [2024-10-13 16:45:49,169 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1884, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2096, PETRI_PLACES=250, PETRI_TRANSITIONS=247} [2024-10-13 16:45:49,169 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 171 predicate places. [2024-10-13 16:45:49,169 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 247 transitions, 2096 flow [2024-10-13 16:45:49,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 40.3125) internal successors, (645), 16 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:49,170 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:49,170 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:49,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-13 16:45:49,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-13 16:45:49,374 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:49,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:49,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1429778302, now seen corresponding path program 1 times [2024-10-13 16:45:49,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:49,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271529772] [2024-10-13 16:45:49,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:49,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:49,473 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:45:49,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:49,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271529772] [2024-10-13 16:45:49,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271529772] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:49,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121001318] [2024-10-13 16:45:49,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:49,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:49,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:49,475 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:45:49,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-13 16:45:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:49,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 16:45:49,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:49,629 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:45:49,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:45:49,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121001318] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:49,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:49,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-10-13 16:45:49,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946179522] [2024-10-13 16:45:49,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:49,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-13 16:45:49,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:49,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-13 16:45:49,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-10-13 16:45:49,906 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-10-13 16:45:49,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 247 transitions, 2096 flow. Second operand has 20 states, 20 states have (on average 41.75) internal successors, (835), 20 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:49,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:49,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-10-13 16:45:49,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:51,688 INFO L124 PetriNetUnfolderBase]: 6928/16402 cut-off events. [2024-10-13 16:45:51,688 INFO L125 PetriNetUnfolderBase]: For 46233/46489 co-relation queries the response was YES. [2024-10-13 16:45:51,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56118 conditions, 16402 events. 6928/16402 cut-off events. For 46233/46489 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 166187 event pairs, 4176 based on Foata normal form. 192/16191 useless extension candidates. Maximal degree in co-relation 56058. Up to 6481 conditions per place. [2024-10-13 16:45:51,877 INFO L140 encePairwiseOnDemand]: 76/86 looper letters, 222 selfloop transitions, 100 changer transitions 48/418 dead transitions. [2024-10-13 16:45:51,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 418 transitions, 4093 flow [2024-10-13 16:45:51,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:45:51,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:45:51,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 528 transitions. [2024-10-13 16:45:51,879 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6139534883720931 [2024-10-13 16:45:51,879 INFO L175 Difference]: Start difference. First operand has 250 places, 247 transitions, 2096 flow. Second operand 10 states and 528 transitions. [2024-10-13 16:45:51,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 418 transitions, 4093 flow [2024-10-13 16:45:52,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 418 transitions, 3890 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-10-13 16:45:52,193 INFO L231 Difference]: Finished difference. Result has 255 places, 253 transitions, 2273 flow [2024-10-13 16:45:52,193 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1985, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2273, PETRI_PLACES=255, PETRI_TRANSITIONS=253} [2024-10-13 16:45:52,194 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 176 predicate places. [2024-10-13 16:45:52,194 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 253 transitions, 2273 flow [2024-10-13 16:45:52,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 41.75) internal successors, (835), 20 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:52,194 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:52,195 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:52,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-13 16:45:52,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-13 16:45:52,395 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:52,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:52,396 INFO L85 PathProgramCache]: Analyzing trace with hash -543778631, now seen corresponding path program 1 times [2024-10-13 16:45:52,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:52,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900861485] [2024-10-13 16:45:52,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:52,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:52,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:45:52,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:52,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900861485] [2024-10-13 16:45:52,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900861485] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:45:52,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:45:52,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:45:52,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479180727] [2024-10-13 16:45:52,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:45:52,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:45:52,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:52,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:45:52,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:45:52,447 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-10-13 16:45:52,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 253 transitions, 2273 flow. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:52,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:52,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-10-13 16:45:52,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:54,131 INFO L124 PetriNetUnfolderBase]: 8890/18351 cut-off events. [2024-10-13 16:45:54,131 INFO L125 PetriNetUnfolderBase]: For 52195/52608 co-relation queries the response was YES. [2024-10-13 16:45:54,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63206 conditions, 18351 events. 8890/18351 cut-off events. For 52195/52608 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 170358 event pairs, 3966 based on Foata normal form. 541/18472 useless extension candidates. Maximal degree in co-relation 63145. Up to 8293 conditions per place. [2024-10-13 16:45:54,377 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 237 selfloop transitions, 10 changer transitions 64/350 dead transitions. [2024-10-13 16:45:54,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 350 transitions, 3655 flow [2024-10-13 16:45:54,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:45:54,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:45:54,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 235 transitions. [2024-10-13 16:45:54,378 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6831395348837209 [2024-10-13 16:45:54,378 INFO L175 Difference]: Start difference. First operand has 255 places, 253 transitions, 2273 flow. Second operand 4 states and 235 transitions. [2024-10-13 16:45:54,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 350 transitions, 3655 flow [2024-10-13 16:45:54,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 350 transitions, 3611 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 16:45:54,629 INFO L231 Difference]: Finished difference. Result has 252 places, 218 transitions, 1892 flow [2024-10-13 16:45:54,629 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2209, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1892, PETRI_PLACES=252, PETRI_TRANSITIONS=218} [2024-10-13 16:45:54,630 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 173 predicate places. [2024-10-13 16:45:54,630 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 218 transitions, 1892 flow [2024-10-13 16:45:54,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:54,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:54,630 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:54,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-13 16:45:54,631 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:54,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:54,631 INFO L85 PathProgramCache]: Analyzing trace with hash 437382995, now seen corresponding path program 1 times [2024-10-13 16:45:54,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:54,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607280184] [2024-10-13 16:45:54,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:54,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:54,725 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:45:54,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:54,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607280184] [2024-10-13 16:45:54,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607280184] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:54,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509790901] [2024-10-13 16:45:54,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:54,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:54,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:54,727 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:45:54,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-13 16:45:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:54,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 16:45:54,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:54,866 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:45:54,866 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:54,929 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:45:54,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509790901] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:54,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:54,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-10-13 16:45:54,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905680942] [2024-10-13 16:45:54,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:54,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-13 16:45:54,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:54,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-13 16:45:54,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-10-13 16:45:55,128 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 86 [2024-10-13 16:45:55,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 218 transitions, 1892 flow. Second operand has 20 states, 20 states have (on average 41.85) internal successors, (837), 20 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:55,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:55,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 86 [2024-10-13 16:45:55,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:56,314 INFO L124 PetriNetUnfolderBase]: 4480/10286 cut-off events. [2024-10-13 16:45:56,315 INFO L125 PetriNetUnfolderBase]: For 31321/31515 co-relation queries the response was YES. [2024-10-13 16:45:56,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36194 conditions, 10286 events. 4480/10286 cut-off events. For 31321/31515 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 94385 event pairs, 2484 based on Foata normal form. 90/10137 useless extension candidates. Maximal degree in co-relation 36133. Up to 5059 conditions per place. [2024-10-13 16:45:56,406 INFO L140 encePairwiseOnDemand]: 76/86 looper letters, 79 selfloop transitions, 92 changer transitions 99/313 dead transitions. [2024-10-13 16:45:56,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 313 transitions, 3048 flow [2024-10-13 16:45:56,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:45:56,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:45:56,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 524 transitions. [2024-10-13 16:45:56,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6093023255813953 [2024-10-13 16:45:56,407 INFO L175 Difference]: Start difference. First operand has 252 places, 218 transitions, 1892 flow. Second operand 10 states and 524 transitions. [2024-10-13 16:45:56,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 313 transitions, 3048 flow [2024-10-13 16:45:56,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 313 transitions, 3003 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-10-13 16:45:56,541 INFO L231 Difference]: Finished difference. Result has 237 places, 214 transitions, 1990 flow [2024-10-13 16:45:56,541 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1864, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1990, PETRI_PLACES=237, PETRI_TRANSITIONS=214} [2024-10-13 16:45:56,542 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 158 predicate places. [2024-10-13 16:45:56,542 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 214 transitions, 1990 flow [2024-10-13 16:45:56,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 41.85) internal successors, (837), 20 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:56,542 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:56,542 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:56,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-13 16:45:56,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:56,747 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:56,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:56,748 INFO L85 PathProgramCache]: Analyzing trace with hash -69811793, now seen corresponding path program 2 times [2024-10-13 16:45:56,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:56,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562681123] [2024-10-13 16:45:56,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:56,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:56,829 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-13 16:45:56,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:56,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562681123] [2024-10-13 16:45:56,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562681123] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:56,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394484759] [2024-10-13 16:45:56,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:45:56,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:56,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:56,832 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:45:56,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-13 16:45:56,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:45:56,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:45:56,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:45:56,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:56,944 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:45:56,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:56,978 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:45:56,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394484759] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:56,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:56,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2024-10-13 16:45:56,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506917977] [2024-10-13 16:45:56,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:56,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 16:45:56,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:56,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 16:45:56,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:45:57,012 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-10-13 16:45:57,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 214 transitions, 1990 flow. Second operand has 9 states, 9 states have (on average 47.55555555555556) internal successors, (428), 9 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:57,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:57,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-10-13 16:45:57,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:45:58,185 INFO L124 PetriNetUnfolderBase]: 4995/10979 cut-off events. [2024-10-13 16:45:58,186 INFO L125 PetriNetUnfolderBase]: For 29740/30420 co-relation queries the response was YES. [2024-10-13 16:45:58,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37601 conditions, 10979 events. 4995/10979 cut-off events. For 29740/30420 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 99563 event pairs, 306 based on Foata normal form. 460/11429 useless extension candidates. Maximal degree in co-relation 37542. Up to 2264 conditions per place. [2024-10-13 16:45:58,288 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 376 selfloop transitions, 9 changer transitions 0/429 dead transitions. [2024-10-13 16:45:58,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 429 transitions, 4142 flow [2024-10-13 16:45:58,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 16:45:58,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 16:45:58,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 560 transitions. [2024-10-13 16:45:58,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7235142118863049 [2024-10-13 16:45:58,289 INFO L175 Difference]: Start difference. First operand has 237 places, 214 transitions, 1990 flow. Second operand 9 states and 560 transitions. [2024-10-13 16:45:58,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 429 transitions, 4142 flow [2024-10-13 16:45:58,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 429 transitions, 3882 flow, removed 37 selfloop flow, removed 14 redundant places. [2024-10-13 16:45:58,430 INFO L231 Difference]: Finished difference. Result has 223 places, 216 transitions, 1816 flow [2024-10-13 16:45:58,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1782, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1816, PETRI_PLACES=223, PETRI_TRANSITIONS=216} [2024-10-13 16:45:58,431 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 144 predicate places. [2024-10-13 16:45:58,431 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 216 transitions, 1816 flow [2024-10-13 16:45:58,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 47.55555555555556) internal successors, (428), 9 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:58,432 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:45:58,432 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:45:58,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-13 16:45:58,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:58,632 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:45:58,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:45:58,633 INFO L85 PathProgramCache]: Analyzing trace with hash 2130770743, now seen corresponding path program 1 times [2024-10-13 16:45:58,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:45:58,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095895686] [2024-10-13 16:45:58,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:58,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:45:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:59,046 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:45:59,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:45:59,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095895686] [2024-10-13 16:45:59,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095895686] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:45:59,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823255301] [2024-10-13 16:45:59,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:45:59,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:45:59,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:45:59,048 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:45:59,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-13 16:45:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:45:59,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-13 16:45:59,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:45:59,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-13 16:45:59,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-10-13 16:45:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:45:59,245 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:45:59,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-13 16:45:59,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-10-13 16:45:59,362 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:45:59,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823255301] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:45:59,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:45:59,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2024-10-13 16:45:59,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774292493] [2024-10-13 16:45:59,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:45:59,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-13 16:45:59,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:45:59,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-13 16:45:59,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2024-10-13 16:45:59,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 86 [2024-10-13 16:45:59,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 216 transitions, 1816 flow. Second operand has 26 states, 26 states have (on average 38.88461538461539) internal successors, (1011), 26 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:45:59,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:45:59,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 86 [2024-10-13 16:45:59,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:46:01,604 INFO L124 PetriNetUnfolderBase]: 5289/11460 cut-off events. [2024-10-13 16:46:01,604 INFO L125 PetriNetUnfolderBase]: For 28986/29525 co-relation queries the response was YES. [2024-10-13 16:46:01,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39230 conditions, 11460 events. 5289/11460 cut-off events. For 28986/29525 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 102431 event pairs, 1403 based on Foata normal form. 345/11541 useless extension candidates. Maximal degree in co-relation 39178. Up to 2338 conditions per place. [2024-10-13 16:46:01,703 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 366 selfloop transitions, 56 changer transitions 30/493 dead transitions. [2024-10-13 16:46:01,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 493 transitions, 4462 flow [2024-10-13 16:46:01,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 16:46:01,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-13 16:46:01,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 807 transitions. [2024-10-13 16:46:01,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5864825581395349 [2024-10-13 16:46:01,706 INFO L175 Difference]: Start difference. First operand has 223 places, 216 transitions, 1816 flow. Second operand 16 states and 807 transitions. [2024-10-13 16:46:01,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 493 transitions, 4462 flow [2024-10-13 16:46:01,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 493 transitions, 4448 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 16:46:01,834 INFO L231 Difference]: Finished difference. Result has 236 places, 223 transitions, 2009 flow [2024-10-13 16:46:01,835 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1802, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2009, PETRI_PLACES=236, PETRI_TRANSITIONS=223} [2024-10-13 16:46:01,835 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 157 predicate places. [2024-10-13 16:46:01,835 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 223 transitions, 2009 flow [2024-10-13 16:46:01,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 38.88461538461539) internal successors, (1011), 26 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:46:01,836 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:46:01,836 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:46:01,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-10-13 16:46:02,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:46:02,037 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:46:02,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:46:02,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1695140160, now seen corresponding path program 2 times [2024-10-13 16:46:02,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:46:02,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962626833] [2024-10-13 16:46:02,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:46:02,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:46:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:02,124 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-13 16:46:02,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:46:02,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962626833] [2024-10-13 16:46:02,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962626833] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:46:02,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598277896] [2024-10-13 16:46:02,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:46:02,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:46:02,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:46:02,129 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:46:02,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-13 16:46:02,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 16:46:02,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:46:02,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:46:02,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:46:02,258 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:46:02,259 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:46:02,289 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 16:46:02,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598277896] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:46:02,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:46:02,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2024-10-13 16:46:02,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166604561] [2024-10-13 16:46:02,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:46:02,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 16:46:02,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:46:02,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 16:46:02,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:46:02,312 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 86 [2024-10-13 16:46:02,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 223 transitions, 2009 flow. Second operand has 9 states, 9 states have (on average 48.0) internal successors, (432), 9 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:46:02,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:46:02,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 86 [2024-10-13 16:46:02,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:46:04,090 INFO L124 PetriNetUnfolderBase]: 7735/17116 cut-off events. [2024-10-13 16:46:04,090 INFO L125 PetriNetUnfolderBase]: For 55029/56821 co-relation queries the response was YES. [2024-10-13 16:46:04,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58904 conditions, 17116 events. 7735/17116 cut-off events. For 55029/56821 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 165077 event pairs, 531 based on Foata normal form. 756/17491 useless extension candidates. Maximal degree in co-relation 58848. Up to 3474 conditions per place. [2024-10-13 16:46:04,300 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 430 selfloop transitions, 9 changer transitions 0/483 dead transitions. [2024-10-13 16:46:04,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 483 transitions, 4872 flow [2024-10-13 16:46:04,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 16:46:04,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 16:46:04,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 551 transitions. [2024-10-13 16:46:04,302 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7118863049095607 [2024-10-13 16:46:04,302 INFO L175 Difference]: Start difference. First operand has 236 places, 223 transitions, 2009 flow. Second operand 9 states and 551 transitions. [2024-10-13 16:46:04,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 483 transitions, 4872 flow [2024-10-13 16:46:04,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 483 transitions, 4755 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-10-13 16:46:04,587 INFO L231 Difference]: Finished difference. Result has 234 places, 225 transitions, 1984 flow [2024-10-13 16:46:04,588 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1950, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1984, PETRI_PLACES=234, PETRI_TRANSITIONS=225} [2024-10-13 16:46:04,588 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 155 predicate places. [2024-10-13 16:46:04,592 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 225 transitions, 1984 flow [2024-10-13 16:46:04,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 48.0) internal successors, (432), 9 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:46:04,592 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:46:04,593 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:46:04,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-13 16:46:04,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-10-13 16:46:04,793 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:46:04,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:46:04,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1629352626, now seen corresponding path program 1 times [2024-10-13 16:46:04,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:46:04,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119433481] [2024-10-13 16:46:04,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:46:04,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:46:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:05,202 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:46:05,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:46:05,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119433481] [2024-10-13 16:46:05,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119433481] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:46:05,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380679523] [2024-10-13 16:46:05,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:46:05,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:46:05,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:46:05,204 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:46:05,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-13 16:46:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:05,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-13 16:46:05,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:46:05,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-13 16:46:05,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-10-13 16:46:05,405 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:46:05,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:46:05,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-13 16:46:05,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-10-13 16:46:05,498 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:46:05,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380679523] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:46:05,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:46:05,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2024-10-13 16:46:05,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269258877] [2024-10-13 16:46:05,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:46:05,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-13 16:46:05,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:46:05,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-13 16:46:05,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2024-10-13 16:46:05,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 86 [2024-10-13 16:46:05,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 225 transitions, 1984 flow. Second operand has 26 states, 26 states have (on average 36.96153846153846) internal successors, (961), 26 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:46:05,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:46:05,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 86 [2024-10-13 16:46:05,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:46:08,126 INFO L124 PetriNetUnfolderBase]: 8951/18526 cut-off events. [2024-10-13 16:46:08,126 INFO L125 PetriNetUnfolderBase]: For 54172/55104 co-relation queries the response was YES. [2024-10-13 16:46:08,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65569 conditions, 18526 events. 8951/18526 cut-off events. For 54172/55104 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 172179 event pairs, 2877 based on Foata normal form. 632/19050 useless extension candidates. Maximal degree in co-relation 65513. Up to 4348 conditions per place. [2024-10-13 16:46:08,507 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 377 selfloop transitions, 52 changer transitions 15/482 dead transitions. [2024-10-13 16:46:08,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 482 transitions, 4530 flow [2024-10-13 16:46:08,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 16:46:08,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 16:46:08,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 720 transitions. [2024-10-13 16:46:08,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5581395348837209 [2024-10-13 16:46:08,511 INFO L175 Difference]: Start difference. First operand has 234 places, 225 transitions, 1984 flow. Second operand 15 states and 720 transitions. [2024-10-13 16:46:08,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 482 transitions, 4530 flow [2024-10-13 16:46:08,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 482 transitions, 4425 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 16:46:08,799 INFO L231 Difference]: Finished difference. Result has 244 places, 225 transitions, 2089 flow [2024-10-13 16:46:08,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1962, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2089, PETRI_PLACES=244, PETRI_TRANSITIONS=225} [2024-10-13 16:46:08,800 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 165 predicate places. [2024-10-13 16:46:08,800 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 225 transitions, 2089 flow [2024-10-13 16:46:08,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 36.96153846153846) internal successors, (961), 26 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:46:08,800 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:46:08,801 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:46:08,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-10-13 16:46:09,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-10-13 16:46:09,008 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:46:09,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:46:09,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1029676359, now seen corresponding path program 1 times [2024-10-13 16:46:09,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:46:09,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418033846] [2024-10-13 16:46:09,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:46:09,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:46:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:09,508 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:46:09,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:46:09,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418033846] [2024-10-13 16:46:09,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418033846] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:46:09,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040473188] [2024-10-13 16:46:09,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:46:09,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:46:09,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:46:09,511 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:46:09,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-13 16:46:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:09,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-13 16:46:09,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:46:09,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-13 16:46:09,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-13 16:46:09,734 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-13 16:46:09,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-13 16:46:09,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-10-13 16:46:09,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-10-13 16:46:09,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-10-13 16:46:09,910 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:46:09,910 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:46:09,993 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_508 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_508) c_~a1~0.base) (+ c_~a1~0.offset 4)) 2147483649))) is different from false [2024-10-13 16:46:10,048 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:46:10,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-10-13 16:46:10,054 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:46:10,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2024-10-13 16:46:10,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-13 16:46:10,145 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-10-13 16:46:10,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040473188] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:46:10,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:46:10,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-10-13 16:46:10,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838681911] [2024-10-13 16:46:10,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:46:10,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-13 16:46:10,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:46:10,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-13 16:46:10,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=836, Unknown=1, NotChecked=58, Total=992 [2024-10-13 16:46:10,162 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 86 [2024-10-13 16:46:10,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 225 transitions, 2089 flow. Second operand has 32 states, 32 states have (on average 28.375) internal successors, (908), 32 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:46:10,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:46:10,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 86 [2024-10-13 16:46:10,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:46:14,090 INFO L124 PetriNetUnfolderBase]: 13055/22277 cut-off events. [2024-10-13 16:46:14,091 INFO L125 PetriNetUnfolderBase]: For 66742/68582 co-relation queries the response was YES. [2024-10-13 16:46:14,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81097 conditions, 22277 events. 13055/22277 cut-off events. For 66742/68582 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 176880 event pairs, 2637 based on Foata normal form. 1216/23425 useless extension candidates. Maximal degree in co-relation 81039. Up to 5316 conditions per place. [2024-10-13 16:46:14,450 INFO L140 encePairwiseOnDemand]: 68/86 looper letters, 565 selfloop transitions, 63 changer transitions 30/683 dead transitions. [2024-10-13 16:46:14,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 683 transitions, 6195 flow [2024-10-13 16:46:14,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-13 16:46:14,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-13 16:46:14,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 969 transitions. [2024-10-13 16:46:14,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45069767441860464 [2024-10-13 16:46:14,452 INFO L175 Difference]: Start difference. First operand has 244 places, 225 transitions, 2089 flow. Second operand 25 states and 969 transitions. [2024-10-13 16:46:14,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 683 transitions, 6195 flow [2024-10-13 16:46:14,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 683 transitions, 6089 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-10-13 16:46:14,743 INFO L231 Difference]: Finished difference. Result has 262 places, 231 transitions, 2194 flow [2024-10-13 16:46:14,744 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1988, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2194, PETRI_PLACES=262, PETRI_TRANSITIONS=231} [2024-10-13 16:46:14,744 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 183 predicate places. [2024-10-13 16:46:14,744 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 231 transitions, 2194 flow [2024-10-13 16:46:14,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 28.375) internal successors, (908), 32 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:46:14,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:46:14,745 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:46:14,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-10-13 16:46:14,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:46:14,948 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:46:14,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:46:14,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1009770051, now seen corresponding path program 1 times [2024-10-13 16:46:14,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:46:14,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732125768] [2024-10-13 16:46:14,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:46:14,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:46:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:15,201 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:46:15,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:46:15,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732125768] [2024-10-13 16:46:15,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732125768] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:46:15,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477114641] [2024-10-13 16:46:15,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:46:15,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:46:15,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:46:15,203 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:46:15,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-13 16:46:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:15,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 16:46:15,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:46:15,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-13 16:46:15,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-13 16:46:15,358 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-13 16:46:15,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-13 16:46:15,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-13 16:46:15,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-13 16:46:15,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-10-13 16:46:15,472 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:46:15,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:46:15,545 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_536 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_536) c_~a1~0.base) (+ c_~a1~0.offset 4)) 9223372039002259456)) is different from false [2024-10-13 16:46:15,555 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_171| Int) (v_ArrVal_536 (Array Int Int))) (or (< (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_171| v_ArrVal_536) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_171|) 0)))) is different from false [2024-10-13 16:46:15,567 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:46:15,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-10-13 16:46:15,573 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:46:15,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2024-10-13 16:46:15,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 16:46:15,657 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 8 not checked. [2024-10-13 16:46:15,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477114641] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:46:15,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:46:15,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 29 [2024-10-13 16:46:15,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818382235] [2024-10-13 16:46:15,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:46:15,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-13 16:46:15,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:46:15,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-13 16:46:15,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=719, Unknown=2, NotChecked=110, Total=930 [2024-10-13 16:46:15,659 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 86 [2024-10-13 16:46:15,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 231 transitions, 2194 flow. Second operand has 31 states, 31 states have (on average 30.64516129032258) internal successors, (950), 31 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:46:15,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:46:15,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 86 [2024-10-13 16:46:15,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:46:18,858 INFO L124 PetriNetUnfolderBase]: 12663/22030 cut-off events. [2024-10-13 16:46:18,858 INFO L125 PetriNetUnfolderBase]: For 99958/102804 co-relation queries the response was YES. [2024-10-13 16:46:19,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84303 conditions, 22030 events. 12663/22030 cut-off events. For 99958/102804 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 176890 event pairs, 2541 based on Foata normal form. 1098/23093 useless extension candidates. Maximal degree in co-relation 84241. Up to 5156 conditions per place. [2024-10-13 16:46:19,278 INFO L140 encePairwiseOnDemand]: 70/86 looper letters, 481 selfloop transitions, 56 changer transitions 40/611 dead transitions. [2024-10-13 16:46:19,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 611 transitions, 6608 flow [2024-10-13 16:46:19,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 16:46:19,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-13 16:46:19,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 833 transitions. [2024-10-13 16:46:19,291 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46124031007751937 [2024-10-13 16:46:19,291 INFO L175 Difference]: Start difference. First operand has 262 places, 231 transitions, 2194 flow. Second operand 21 states and 833 transitions. [2024-10-13 16:46:19,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 611 transitions, 6608 flow [2024-10-13 16:46:19,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 611 transitions, 6296 flow, removed 30 selfloop flow, removed 14 redundant places. [2024-10-13 16:46:19,592 INFO L231 Difference]: Finished difference. Result has 271 places, 238 transitions, 2289 flow [2024-10-13 16:46:19,592 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2082, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2289, PETRI_PLACES=271, PETRI_TRANSITIONS=238} [2024-10-13 16:46:19,593 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 192 predicate places. [2024-10-13 16:46:19,593 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 238 transitions, 2289 flow [2024-10-13 16:46:19,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 30.64516129032258) internal successors, (950), 31 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:46:19,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:46:19,594 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:46:19,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-10-13 16:46:19,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:46:19,799 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:46:19,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:46:19,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1855195243, now seen corresponding path program 1 times [2024-10-13 16:46:19,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:46:19,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434834065] [2024-10-13 16:46:19,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:46:19,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:46:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:20,078 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:46:20,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:46:20,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434834065] [2024-10-13 16:46:20,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434834065] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:46:20,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15732111] [2024-10-13 16:46:20,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:46:20,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:46:20,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:46:20,080 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:46:20,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-13 16:46:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:20,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-13 16:46:20,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:46:20,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-13 16:46:20,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-13 16:46:20,260 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-13 16:46:20,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-13 16:46:20,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-13 16:46:20,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-13 16:46:20,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-10-13 16:46:20,429 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:46:20,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:46:20,519 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_565 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_565) c_~a1~0.base) (+ c_~a1~0.offset 4)) 2147483648)) is different from false [2024-10-13 16:46:20,564 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:46:20,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-10-13 16:46:20,570 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:46:20,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2024-10-13 16:46:20,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 16:46:20,669 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-10-13 16:46:20,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15732111] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:46:20,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:46:20,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2024-10-13 16:46:20,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5616540] [2024-10-13 16:46:20,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:46:20,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-13 16:46:20,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:46:20,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-13 16:46:20,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=894, Unknown=1, NotChecked=60, Total=1056 [2024-10-13 16:46:20,712 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 86 [2024-10-13 16:46:20,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 238 transitions, 2289 flow. Second operand has 33 states, 33 states have (on average 28.363636363636363) internal successors, (936), 33 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:46:20,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:46:20,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 86 [2024-10-13 16:46:20,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:46:24,637 INFO L124 PetriNetUnfolderBase]: 13663/24119 cut-off events. [2024-10-13 16:46:24,637 INFO L125 PetriNetUnfolderBase]: For 89502/91142 co-relation queries the response was YES. [2024-10-13 16:46:25,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93322 conditions, 24119 events. 13663/24119 cut-off events. For 89502/91142 co-relation queries the response was YES. Maximal size of possible extension queue 839. Compared 198887 event pairs, 4337 based on Foata normal form. 1107/25076 useless extension candidates. Maximal degree in co-relation 93257. Up to 6284 conditions per place. [2024-10-13 16:46:25,209 INFO L140 encePairwiseOnDemand]: 67/86 looper letters, 568 selfloop transitions, 60 changer transitions 144/800 dead transitions. [2024-10-13 16:46:25,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 800 transitions, 8156 flow [2024-10-13 16:46:25,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-13 16:46:25,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-13 16:46:25,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1006 transitions. [2024-10-13 16:46:25,211 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44991055456171736 [2024-10-13 16:46:25,211 INFO L175 Difference]: Start difference. First operand has 271 places, 238 transitions, 2289 flow. Second operand 26 states and 1006 transitions. [2024-10-13 16:46:25,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 800 transitions, 8156 flow [2024-10-13 16:46:25,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 800 transitions, 7943 flow, removed 15 selfloop flow, removed 16 redundant places. [2024-10-13 16:46:25,597 INFO L231 Difference]: Finished difference. Result has 284 places, 242 transitions, 2379 flow [2024-10-13 16:46:25,598 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2206, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2379, PETRI_PLACES=284, PETRI_TRANSITIONS=242} [2024-10-13 16:46:25,598 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 205 predicate places. [2024-10-13 16:46:25,598 INFO L471 AbstractCegarLoop]: Abstraction has has 284 places, 242 transitions, 2379 flow [2024-10-13 16:46:25,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 28.363636363636363) internal successors, (936), 33 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:46:25,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:46:25,599 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:46:25,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-10-13 16:46:25,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-10-13 16:46:25,803 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:46:25,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:46:25,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1238069574, now seen corresponding path program 1 times [2024-10-13 16:46:25,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:46:25,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167190070] [2024-10-13 16:46:25,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:46:25,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:46:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:26,065 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:46:26,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:46:26,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167190070] [2024-10-13 16:46:26,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167190070] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:46:26,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5286627] [2024-10-13 16:46:26,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:46:26,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:46:26,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:46:26,069 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:46:26,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-13 16:46:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:26,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-13 16:46:26,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:46:26,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-13 16:46:26,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-13 16:46:26,234 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-13 16:46:26,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-13 16:46:26,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-10-13 16:46:26,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-10-13 16:46:26,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-10-13 16:46:26,373 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:46:26,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:46:26,498 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_594 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_175| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_175|) 0)) (< 0 (+ (select (select (store |c_#memory_int#1| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_175| v_ArrVal_594) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4294967296)))) is different from false [2024-10-13 16:46:26,513 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:46:26,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-10-13 16:46:26,519 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 16:46:26,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2024-10-13 16:46:26,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-13 16:46:26,619 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-10-13 16:46:26,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5286627] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:46:26,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:46:26,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 29 [2024-10-13 16:46:26,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321921390] [2024-10-13 16:46:26,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:46:26,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-13 16:46:26,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:46:26,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-13 16:46:26,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=766, Unknown=11, NotChecked=56, Total=930 [2024-10-13 16:46:26,650 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 86 [2024-10-13 16:46:26,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 242 transitions, 2379 flow. Second operand has 31 states, 31 states have (on average 30.64516129032258) internal successors, (950), 31 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:46:26,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:46:26,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 86 [2024-10-13 16:46:26,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:46:30,020 INFO L124 PetriNetUnfolderBase]: 12509/21812 cut-off events. [2024-10-13 16:46:30,020 INFO L125 PetriNetUnfolderBase]: For 116272/118910 co-relation queries the response was YES. [2024-10-13 16:46:30,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87907 conditions, 21812 events. 12509/21812 cut-off events. For 116272/118910 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 175310 event pairs, 3077 based on Foata normal form. 944/22717 useless extension candidates. Maximal degree in co-relation 87839. Up to 6140 conditions per place. [2024-10-13 16:46:30,578 INFO L140 encePairwiseOnDemand]: 71/86 looper letters, 466 selfloop transitions, 52 changer transitions 26/580 dead transitions. [2024-10-13 16:46:30,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 580 transitions, 6442 flow [2024-10-13 16:46:30,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-13 16:46:30,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-13 16:46:30,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 778 transitions. [2024-10-13 16:46:30,580 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45232558139534884 [2024-10-13 16:46:30,580 INFO L175 Difference]: Start difference. First operand has 284 places, 242 transitions, 2379 flow. Second operand 20 states and 778 transitions. [2024-10-13 16:46:30,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 580 transitions, 6442 flow [2024-10-13 16:46:30,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 580 transitions, 6064 flow, removed 18 selfloop flow, removed 21 redundant places. [2024-10-13 16:46:30,948 INFO L231 Difference]: Finished difference. Result has 283 places, 242 transitions, 2372 flow [2024-10-13 16:46:30,948 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=2245, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2372, PETRI_PLACES=283, PETRI_TRANSITIONS=242} [2024-10-13 16:46:30,949 INFO L277 CegarLoopForPetriNet]: 79 programPoint places, 204 predicate places. [2024-10-13 16:46:30,949 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 242 transitions, 2372 flow [2024-10-13 16:46:30,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 30.64516129032258) internal successors, (950), 31 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:46:30,949 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:46:30,950 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:46:30,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-10-13 16:46:31,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-10-13 16:46:31,154 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2024-10-13 16:46:31,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:46:31,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1465027985, now seen corresponding path program 2 times [2024-10-13 16:46:31,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:46:31,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740212660] [2024-10-13 16:46:31,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:46:31,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:46:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:46:31,274 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:46:31,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:46:31,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740212660] [2024-10-13 16:46:31,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740212660] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:46:31,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807270859] [2024-10-13 16:46:31,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:46:31,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:46:31,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:46:31,277 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:46:31,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-13 16:46:31,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:46:31,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:46:31,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 16:46:31,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:46:31,527 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:46:31,527 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:46:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 16:46:31,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807270859] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:46:31,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:46:31,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 34 [2024-10-13 16:46:31,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322101948] [2024-10-13 16:46:31,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:46:31,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-13 16:46:31,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:46:31,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-13 16:46:31,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2024-10-13 16:46:32,109 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 86 [2024-10-13 16:46:32,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 242 transitions, 2372 flow. Second operand has 34 states, 34 states have (on average 37.588235294117645) internal successors, (1278), 34 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:46:32,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:46:32,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 86 [2024-10-13 16:46:32,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand