./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-word-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 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-word-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 bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-15 00:00:00,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 00:00:00,490 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-15 00:00:00,493 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 00:00:00,496 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 00:00:00,525 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 00:00:00,526 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 00:00:00,527 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 00:00:00,527 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 00:00:00,528 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 00:00:00,529 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 00:00:00,529 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 00:00:00,530 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 00:00:00,530 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 00:00:00,531 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 00:00:00,532 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 00:00:00,532 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 00:00:00,532 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 00:00:00,532 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 00:00:00,532 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 00:00:00,533 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 00:00:00,535 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 00:00:00,535 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 00:00:00,535 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 00:00:00,536 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 00:00:00,536 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-15 00:00:00,536 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-15 00:00:00,536 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 00:00:00,536 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 00:00:00,536 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 00:00:00,536 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 00:00:00,537 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 00:00:00,537 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 00:00:00,537 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 00:00:00,537 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:00:00,537 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 00:00:00,537 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 00:00:00,537 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 00:00:00,538 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 00:00:00,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 00:00:00,538 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 00:00:00,539 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 00:00:00,539 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 00:00:00,540 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 00:00:00,540 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e [2024-10-15 00:00:00,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 00:00:00,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 00:00:00,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 00:00:00,758 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 00:00:00,762 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 00:00:00,763 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2024-10-15 00:00:02,156 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 00:00:02,336 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 00:00:02,337 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2024-10-15 00:00:02,347 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ef4aa2ef/59c3d58650224e99988c3015bbc3dc6a/FLAG19335be60 [2024-10-15 00:00:02,725 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ef4aa2ef/59c3d58650224e99988c3015bbc3dc6a [2024-10-15 00:00:02,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 00:00:02,728 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 00:00:02,733 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 00:00:02,733 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 00:00:02,741 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 00:00:02,742 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:00:02" (1/1) ... [2024-10-15 00:00:02,746 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8d01f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:02, skipping insertion in model container [2024-10-15 00:00:02,746 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:00:02" (1/1) ... [2024-10-15 00:00:02,780 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 00:00:03,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:00:03,074 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 00:00:03,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:00:03,119 INFO L204 MainTranslator]: Completed translation [2024-10-15 00:00:03,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:03 WrapperNode [2024-10-15 00:00:03,119 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 00:00:03,120 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 00:00:03,120 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 00:00:03,121 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 00:00:03,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:03" (1/1) ... [2024-10-15 00:00:03,136 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:03" (1/1) ... [2024-10-15 00:00:03,164 INFO L138 Inliner]: procedures = 23, calls = 26, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 129 [2024-10-15 00:00:03,165 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 00:00:03,165 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 00:00:03,166 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 00:00:03,166 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 00:00:03,179 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:03" (1/1) ... [2024-10-15 00:00:03,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:03" (1/1) ... [2024-10-15 00:00:03,182 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:03" (1/1) ... [2024-10-15 00:00:03,209 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]. [2024-10-15 00:00:03,209 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:03" (1/1) ... [2024-10-15 00:00:03,210 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:03" (1/1) ... [2024-10-15 00:00:03,217 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:03" (1/1) ... [2024-10-15 00:00:03,220 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:03" (1/1) ... [2024-10-15 00:00:03,222 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:03" (1/1) ... [2024-10-15 00:00:03,222 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:03" (1/1) ... [2024-10-15 00:00:03,224 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 00:00:03,225 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 00:00:03,225 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 00:00:03,225 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 00:00:03,226 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:03" (1/1) ... [2024-10-15 00:00:03,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:00:03,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:03,263 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) [2024-10-15 00:00:03,266 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 [2024-10-15 00:00:03,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 00:00:03,322 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-15 00:00:03,322 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-15 00:00:03,322 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-15 00:00:03,322 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-15 00:00:03,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 00:00:03,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-15 00:00:03,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-15 00:00:03,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-15 00:00:03,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-15 00:00:03,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 00:00:03,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 00:00:03,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-15 00:00:03,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-15 00:00:03,329 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-15 00:00:03,448 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 00:00:03,454 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 00:00:03,960 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-15 00:00:03,960 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 00:00:04,365 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 00:00:04,371 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-15 00:00:04,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:00:04 BoogieIcfgContainer [2024-10-15 00:00:04,372 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 00:00:04,373 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 00:00:04,373 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 00:00:04,376 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 00:00:04,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:00:02" (1/3) ... [2024-10-15 00:00:04,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e97d79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:00:04, skipping insertion in model container [2024-10-15 00:00:04,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:03" (2/3) ... [2024-10-15 00:00:04,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e97d79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:00:04, skipping insertion in model container [2024-10-15 00:00:04,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:00:04" (3/3) ... [2024-10-15 00:00:04,384 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2024-10-15 00:00:04,416 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 00:00:04,420 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-15 00:00:04,420 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-15 00:00:04,518 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-15 00:00:04,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 60 transitions, 134 flow [2024-10-15 00:00:04,651 INFO L124 PetriNetUnfolderBase]: 10/58 cut-off events. [2024-10-15 00:00:04,655 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-15 00:00:04,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 58 events. 10/58 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 155 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 43. Up to 3 conditions per place. [2024-10-15 00:00:04,663 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 60 transitions, 134 flow [2024-10-15 00:00:04,670 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 56 transitions, 121 flow [2024-10-15 00:00:04,686 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 00:00:04,695 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;@3c84149, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 00:00:04,696 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-10-15 00:00:04,701 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-15 00:00:04,704 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-15 00:00:04,704 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-15 00:00:04,704 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:04,707 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-15 00:00:04,708 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-15 00:00:04,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:04,717 INFO L85 PathProgramCache]: Analyzing trace with hash 586519, now seen corresponding path program 1 times [2024-10-15 00:00:04,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:04,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16627523] [2024-10-15 00:00:04,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:04,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:05,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:05,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:05,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16627523] [2024-10-15 00:00:05,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16627523] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:05,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:00:05,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:00:05,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318976825] [2024-10-15 00:00:05,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:05,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:00:05,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:05,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:00:05,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:00:05,222 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-10-15 00:00:05,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 56 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2024-10-15 00:00:05,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:05,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-10-15 00:00:05,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:05,473 INFO L124 PetriNetUnfolderBase]: 313/670 cut-off events. [2024-10-15 00:00:05,474 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-10-15 00:00:05,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1156 conditions, 670 events. 313/670 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3573 event pairs, 182 based on Foata normal form. 2/471 useless extension candidates. Maximal degree in co-relation 1066. Up to 452 conditions per place. [2024-10-15 00:00:05,485 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 35 selfloop transitions, 7 changer transitions 0/62 dead transitions. [2024-10-15 00:00:05,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 217 flow [2024-10-15 00:00:05,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:00:05,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:00:05,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-10-15 00:00:05,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-10-15 00:00:05,538 INFO L175 Difference]: Start difference. First operand has 53 places, 56 transitions, 121 flow. Second operand 4 states and 134 transitions. [2024-10-15 00:00:05,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 217 flow [2024-10-15 00:00:05,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 212 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-15 00:00:05,552 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 176 flow [2024-10-15 00:00:05,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=56, PETRI_TRANSITIONS=62} [2024-10-15 00:00:05,564 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-10-15 00:00:05,565 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 176 flow [2024-10-15 00:00:05,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2024-10-15 00:00:05,566 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:05,567 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-15 00:00:05,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 00:00:05,568 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-15 00:00:05,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:05,570 INFO L85 PathProgramCache]: Analyzing trace with hash 293700059, now seen corresponding path program 1 times [2024-10-15 00:00:05,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:05,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263379949] [2024-10-15 00:00:05,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:05,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:05,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:05,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:05,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263379949] [2024-10-15 00:00:05,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263379949] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:05,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664025296] [2024-10-15 00:00:05,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:05,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:05,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:05,727 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) [2024-10-15 00:00:05,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 00:00:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:05,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:00:05,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:05,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:05,834 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:00:05,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664025296] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:05,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:00:05,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-15 00:00:05,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021703981] [2024-10-15 00:00:05,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:05,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 00:00:05,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:05,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:00:05,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-15 00:00:05,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-10-15 00:00:05,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 176 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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) [2024-10-15 00:00:05,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:05,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-10-15 00:00:05,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:05,997 INFO L124 PetriNetUnfolderBase]: 313/668 cut-off events. [2024-10-15 00:00:05,998 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-15 00:00:06,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1166 conditions, 668 events. 313/668 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3543 event pairs, 182 based on Foata normal form. 2/472 useless extension candidates. Maximal degree in co-relation 1116. Up to 442 conditions per place. [2024-10-15 00:00:06,006 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 28 selfloop transitions, 12 changer transitions 0/60 dead transitions. [2024-10-15 00:00:06,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 248 flow [2024-10-15 00:00:06,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:00:06,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-15 00:00:06,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2024-10-15 00:00:06,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-10-15 00:00:06,010 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 176 flow. Second operand 6 states and 174 transitions. [2024-10-15 00:00:06,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 248 flow [2024-10-15 00:00:06,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 60 transitions, 248 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-15 00:00:06,013 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 192 flow [2024-10-15 00:00:06,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2024-10-15 00:00:06,017 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2024-10-15 00:00:06,017 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 192 flow [2024-10-15 00:00:06,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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) [2024-10-15 00:00:06,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:06,018 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-15 00:00:06,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-15 00:00:06,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:06,220 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-15 00:00:06,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:06,221 INFO L85 PathProgramCache]: Analyzing trace with hash 514767822, now seen corresponding path program 1 times [2024-10-15 00:00:06,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:06,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054342170] [2024-10-15 00:00:06,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:06,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:06,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:06,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:06,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054342170] [2024-10-15 00:00:06,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054342170] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:06,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278973173] [2024-10-15 00:00:06,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:06,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:06,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:06,388 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) [2024-10-15 00:00:06,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 00:00:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:06,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:00:06,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:06,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:06,529 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:00:06,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:06,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278973173] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:00:06,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:00:06,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-15 00:00:06,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550600379] [2024-10-15 00:00:06,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:00:06,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 00:00:06,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:06,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 00:00:06,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-15 00:00:06,628 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-10-15 00:00:06,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 192 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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) [2024-10-15 00:00:06,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:06,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-10-15 00:00:06,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:06,850 INFO L124 PetriNetUnfolderBase]: 319/692 cut-off events. [2024-10-15 00:00:06,850 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-10-15 00:00:06,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1260 conditions, 692 events. 319/692 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3767 event pairs, 182 based on Foata normal form. 6/499 useless extension candidates. Maximal degree in co-relation 1118. Up to 453 conditions per place. [2024-10-15 00:00:06,856 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 33 selfloop transitions, 25 changer transitions 0/78 dead transitions. [2024-10-15 00:00:06,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 78 transitions, 422 flow [2024-10-15 00:00:06,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:00:06,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:00:06,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 284 transitions. [2024-10-15 00:00:06,861 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47333333333333333 [2024-10-15 00:00:06,861 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 192 flow. Second operand 10 states and 284 transitions. [2024-10-15 00:00:06,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 78 transitions, 422 flow [2024-10-15 00:00:06,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 78 transitions, 364 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-10-15 00:00:06,865 INFO L231 Difference]: Finished difference. Result has 66 places, 78 transitions, 332 flow [2024-10-15 00:00:06,865 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=332, PETRI_PLACES=66, PETRI_TRANSITIONS=78} [2024-10-15 00:00:06,868 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2024-10-15 00:00:06,869 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 78 transitions, 332 flow [2024-10-15 00:00:06,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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) [2024-10-15 00:00:06,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:06,870 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:06,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 00:00:07,073 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,SelfDestructingSolverStorable2 [2024-10-15 00:00:07,074 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-15 00:00:07,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:07,076 INFO L85 PathProgramCache]: Analyzing trace with hash -2054500936, now seen corresponding path program 1 times [2024-10-15 00:00:07,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:07,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706835820] [2024-10-15 00:00:07,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:07,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:07,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:07,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:07,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706835820] [2024-10-15 00:00:07,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706835820] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:07,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:00:07,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:00:07,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323903283] [2024-10-15 00:00:07,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:07,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:00:07,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:07,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:00:07,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:00:07,172 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 60 [2024-10-15 00:00:07,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 78 transitions, 332 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2024-10-15 00:00:07,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:07,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 60 [2024-10-15 00:00:07,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:07,429 INFO L124 PetriNetUnfolderBase]: 558/1013 cut-off events. [2024-10-15 00:00:07,429 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2024-10-15 00:00:07,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1978 conditions, 1013 events. 558/1013 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4838 event pairs, 254 based on Foata normal form. 18/769 useless extension candidates. Maximal degree in co-relation 1911. Up to 633 conditions per place. [2024-10-15 00:00:07,436 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 87 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2024-10-15 00:00:07,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 110 transitions, 582 flow [2024-10-15 00:00:07,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:00:07,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:00:07,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2024-10-15 00:00:07,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6708333333333333 [2024-10-15 00:00:07,437 INFO L175 Difference]: Start difference. First operand has 66 places, 78 transitions, 332 flow. Second operand 4 states and 161 transitions. [2024-10-15 00:00:07,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 110 transitions, 582 flow [2024-10-15 00:00:07,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 110 transitions, 558 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-10-15 00:00:07,441 INFO L231 Difference]: Finished difference. Result has 69 places, 81 transitions, 337 flow [2024-10-15 00:00:07,441 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=337, PETRI_PLACES=69, PETRI_TRANSITIONS=81} [2024-10-15 00:00:07,442 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 16 predicate places. [2024-10-15 00:00:07,442 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 81 transitions, 337 flow [2024-10-15 00:00:07,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2024-10-15 00:00:07,442 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:07,443 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:07,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-15 00:00:07,443 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-15 00:00:07,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:07,443 INFO L85 PathProgramCache]: Analyzing trace with hash 735012805, now seen corresponding path program 1 times [2024-10-15 00:00:07,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:07,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939276648] [2024-10-15 00:00:07,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:07,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:07,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:07,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:07,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939276648] [2024-10-15 00:00:07,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939276648] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:07,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:00:07,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:00:07,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967049833] [2024-10-15 00:00:07,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:07,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 00:00:07,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:07,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:00:07,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 00:00:07,530 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-10-15 00:00:07,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 81 transitions, 337 flow. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 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) [2024-10-15 00:00:07,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:07,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-10-15 00:00:07,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:07,810 INFO L124 PetriNetUnfolderBase]: 1206/2270 cut-off events. [2024-10-15 00:00:07,810 INFO L125 PetriNetUnfolderBase]: For 371/371 co-relation queries the response was YES. [2024-10-15 00:00:07,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4500 conditions, 2270 events. 1206/2270 cut-off events. For 371/371 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 13536 event pairs, 680 based on Foata normal form. 16/1764 useless extension candidates. Maximal degree in co-relation 4433. Up to 862 conditions per place. [2024-10-15 00:00:07,821 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 81 selfloop transitions, 10 changer transitions 0/110 dead transitions. [2024-10-15 00:00:07,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 110 transitions, 595 flow [2024-10-15 00:00:07,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:00:07,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-15 00:00:07,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2024-10-15 00:00:07,823 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5933333333333334 [2024-10-15 00:00:07,823 INFO L175 Difference]: Start difference. First operand has 69 places, 81 transitions, 337 flow. Second operand 5 states and 178 transitions. [2024-10-15 00:00:07,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 110 transitions, 595 flow [2024-10-15 00:00:07,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 110 transitions, 590 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:00:07,827 INFO L231 Difference]: Finished difference. Result has 74 places, 83 transitions, 378 flow [2024-10-15 00:00:07,827 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=378, PETRI_PLACES=74, PETRI_TRANSITIONS=83} [2024-10-15 00:00:07,828 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 21 predicate places. [2024-10-15 00:00:07,828 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 83 transitions, 378 flow [2024-10-15 00:00:07,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 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) [2024-10-15 00:00:07,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:07,829 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:07,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-15 00:00:07,829 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-15 00:00:07,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:07,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1495633667, now seen corresponding path program 1 times [2024-10-15 00:00:07,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:07,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496583712] [2024-10-15 00:00:07,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:07,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:07,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:07,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:07,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496583712] [2024-10-15 00:00:07,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496583712] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:07,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:00:07,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:00:07,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007059460] [2024-10-15 00:00:07,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:07,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:00:07,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:07,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:00:07,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:00:07,880 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 60 [2024-10-15 00:00:07,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 83 transitions, 378 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2024-10-15 00:00:07,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:07,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 60 [2024-10-15 00:00:07,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:08,215 INFO L124 PetriNetUnfolderBase]: 1703/2931 cut-off events. [2024-10-15 00:00:08,216 INFO L125 PetriNetUnfolderBase]: For 513/553 co-relation queries the response was YES. [2024-10-15 00:00:08,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6107 conditions, 2931 events. 1703/2931 cut-off events. For 513/553 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 16052 event pairs, 770 based on Foata normal form. 50/2444 useless extension candidates. Maximal degree in co-relation 6036. Up to 1824 conditions per place. [2024-10-15 00:00:08,235 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 91 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2024-10-15 00:00:08,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 117 transitions, 662 flow [2024-10-15 00:00:08,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:00:08,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:00:08,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2024-10-15 00:00:08,238 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-10-15 00:00:08,238 INFO L175 Difference]: Start difference. First operand has 74 places, 83 transitions, 378 flow. Second operand 4 states and 159 transitions. [2024-10-15 00:00:08,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 117 transitions, 662 flow [2024-10-15 00:00:08,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 117 transitions, 661 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:00:08,243 INFO L231 Difference]: Finished difference. Result has 78 places, 86 transitions, 406 flow [2024-10-15 00:00:08,244 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=406, PETRI_PLACES=78, PETRI_TRANSITIONS=86} [2024-10-15 00:00:08,245 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 25 predicate places. [2024-10-15 00:00:08,245 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 86 transitions, 406 flow [2024-10-15 00:00:08,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2024-10-15 00:00:08,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:08,246 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:08,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-15 00:00:08,246 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-15 00:00:08,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:08,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1310561114, now seen corresponding path program 1 times [2024-10-15 00:00:08,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:08,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425083825] [2024-10-15 00:00:08,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:08,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:08,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:08,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:08,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425083825] [2024-10-15 00:00:08,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425083825] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:08,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:00:08,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:00:08,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612193179] [2024-10-15 00:00:08,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:08,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:00:08,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:08,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:00:08,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:00:08,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-10-15 00:00:08,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 86 transitions, 406 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2024-10-15 00:00:08,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:08,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-10-15 00:00:08,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:08,936 INFO L124 PetriNetUnfolderBase]: 3198/5792 cut-off events. [2024-10-15 00:00:08,938 INFO L125 PetriNetUnfolderBase]: For 2142/2150 co-relation queries the response was YES. [2024-10-15 00:00:08,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12907 conditions, 5792 events. 3198/5792 cut-off events. For 2142/2150 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 38494 event pairs, 1820 based on Foata normal form. 102/5158 useless extension candidates. Maximal degree in co-relation 12806. Up to 2199 conditions per place. [2024-10-15 00:00:08,981 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 107 selfloop transitions, 5 changer transitions 0/132 dead transitions. [2024-10-15 00:00:08,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 132 transitions, 825 flow [2024-10-15 00:00:08,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:00:08,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:00:08,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2024-10-15 00:00:08,983 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-10-15 00:00:08,983 INFO L175 Difference]: Start difference. First operand has 78 places, 86 transitions, 406 flow. Second operand 4 states and 159 transitions. [2024-10-15 00:00:08,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 132 transitions, 825 flow [2024-10-15 00:00:08,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 132 transitions, 820 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:00:08,996 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 440 flow [2024-10-15 00:00:08,997 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=440, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2024-10-15 00:00:08,998 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 29 predicate places. [2024-10-15 00:00:08,998 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 440 flow [2024-10-15 00:00:08,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2024-10-15 00:00:08,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:08,999 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:08,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-15 00:00:09,000 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-15 00:00:09,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:09,000 INFO L85 PathProgramCache]: Analyzing trace with hash 617931440, now seen corresponding path program 1 times [2024-10-15 00:00:09,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:09,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457006950] [2024-10-15 00:00:09,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:09,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:09,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:09,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:09,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457006950] [2024-10-15 00:00:09,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457006950] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:09,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899561774] [2024-10-15 00:00:09,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:09,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:09,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:09,167 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) [2024-10-15 00:00:09,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 00:00:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:09,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:00:09,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:09,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:00:09,304 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:00:09,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899561774] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:09,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:00:09,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-10-15 00:00:09,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723766935] [2024-10-15 00:00:09,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:09,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:00:09,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:09,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:00:09,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-15 00:00:09,313 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 60 [2024-10-15 00:00:09,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 440 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2024-10-15 00:00:09,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:09,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 60 [2024-10-15 00:00:09,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:09,689 INFO L124 PetriNetUnfolderBase]: 2858/5340 cut-off events. [2024-10-15 00:00:09,690 INFO L125 PetriNetUnfolderBase]: For 1954/1962 co-relation queries the response was YES. [2024-10-15 00:00:09,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11521 conditions, 5340 events. 2858/5340 cut-off events. For 1954/1962 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 36078 event pairs, 1674 based on Foata normal form. 100/4782 useless extension candidates. Maximal degree in co-relation 11419. Up to 3910 conditions per place. [2024-10-15 00:00:09,725 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 59 selfloop transitions, 1 changer transitions 0/84 dead transitions. [2024-10-15 00:00:09,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 84 transitions, 532 flow [2024-10-15 00:00:09,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:00:09,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:00:09,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-10-15 00:00:09,727 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-10-15 00:00:09,727 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 440 flow. Second operand 3 states and 106 transitions. [2024-10-15 00:00:09,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 84 transitions, 532 flow [2024-10-15 00:00:09,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 84 transitions, 515 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-15 00:00:09,735 INFO L231 Difference]: Finished difference. Result has 78 places, 84 transitions, 397 flow [2024-10-15 00:00:09,735 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=397, PETRI_PLACES=78, PETRI_TRANSITIONS=84} [2024-10-15 00:00:09,735 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 25 predicate places. [2024-10-15 00:00:09,735 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 84 transitions, 397 flow [2024-10-15 00:00:09,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2024-10-15 00:00:09,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:09,736 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:09,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-15 00:00:09,936 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 [2024-10-15 00:00:09,937 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-15 00:00:09,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:09,938 INFO L85 PathProgramCache]: Analyzing trace with hash 78074354, now seen corresponding path program 1 times [2024-10-15 00:00:09,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:09,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335078434] [2024-10-15 00:00:09,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:09,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:10,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:00:10,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:10,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335078434] [2024-10-15 00:00:10,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335078434] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:10,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:00:10,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-15 00:00:10,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232336381] [2024-10-15 00:00:10,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:10,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 00:00:10,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:10,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:00:10,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-15 00:00:10,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 60 [2024-10-15 00:00:10,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 84 transitions, 397 flow. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:10,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:10,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 60 [2024-10-15 00:00:10,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:10,368 INFO L124 PetriNetUnfolderBase]: 2242/4134 cut-off events. [2024-10-15 00:00:10,369 INFO L125 PetriNetUnfolderBase]: For 993/1005 co-relation queries the response was YES. [2024-10-15 00:00:10,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9101 conditions, 4134 events. 2242/4134 cut-off events. For 993/1005 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 25989 event pairs, 1242 based on Foata normal form. 0/3716 useless extension candidates. Maximal degree in co-relation 9081. Up to 2113 conditions per place. [2024-10-15 00:00:10,396 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 111 selfloop transitions, 5 changer transitions 0/138 dead transitions. [2024-10-15 00:00:10,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 138 transitions, 837 flow [2024-10-15 00:00:10,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:00:10,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-15 00:00:10,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 200 transitions. [2024-10-15 00:00:10,398 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-15 00:00:10,398 INFO L175 Difference]: Start difference. First operand has 78 places, 84 transitions, 397 flow. Second operand 5 states and 200 transitions. [2024-10-15 00:00:10,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 138 transitions, 837 flow [2024-10-15 00:00:10,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 138 transitions, 836 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:00:10,405 INFO L231 Difference]: Finished difference. Result has 83 places, 86 transitions, 425 flow [2024-10-15 00:00:10,405 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=425, PETRI_PLACES=83, PETRI_TRANSITIONS=86} [2024-10-15 00:00:10,405 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 30 predicate places. [2024-10-15 00:00:10,406 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 86 transitions, 425 flow [2024-10-15 00:00:10,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:00:10,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:10,406 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:10,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-15 00:00:10,406 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-15 00:00:10,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:10,407 INFO L85 PathProgramCache]: Analyzing trace with hash -510845410, now seen corresponding path program 1 times [2024-10-15 00:00:10,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:10,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213523800] [2024-10-15 00:00:10,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:10,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:10,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:10,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:10,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213523800] [2024-10-15 00:00:10,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213523800] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:10,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038799258] [2024-10-15 00:00:10,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:10,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:10,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:10,498 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) [2024-10-15 00:00:10,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 00:00:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:10,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:00:10,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:10,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:00:10,607 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:00:10,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038799258] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:10,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:00:10,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2024-10-15 00:00:10,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557859989] [2024-10-15 00:00:10,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:10,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:00:10,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:10,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:00:10,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-15 00:00:10,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 60 [2024-10-15 00:00:10,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 86 transitions, 425 flow. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2024-10-15 00:00:10,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:10,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 60 [2024-10-15 00:00:10,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:10,877 INFO L124 PetriNetUnfolderBase]: 2048/3876 cut-off events. [2024-10-15 00:00:10,878 INFO L125 PetriNetUnfolderBase]: For 1683/1687 co-relation queries the response was YES. [2024-10-15 00:00:10,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8538 conditions, 3876 events. 2048/3876 cut-off events. For 1683/1687 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 24143 event pairs, 1240 based on Foata normal form. 124/3670 useless extension candidates. Maximal degree in co-relation 8515. Up to 2875 conditions per place. [2024-10-15 00:00:10,903 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 55 selfloop transitions, 6 changer transitions 0/82 dead transitions. [2024-10-15 00:00:10,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 521 flow [2024-10-15 00:00:10,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:00:10,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:00:10,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-10-15 00:00:10,905 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-15 00:00:10,905 INFO L175 Difference]: Start difference. First operand has 83 places, 86 transitions, 425 flow. Second operand 4 states and 130 transitions. [2024-10-15 00:00:10,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 521 flow [2024-10-15 00:00:10,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 501 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-15 00:00:10,914 INFO L231 Difference]: Finished difference. Result has 79 places, 82 transitions, 391 flow [2024-10-15 00:00:10,914 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=391, PETRI_PLACES=79, PETRI_TRANSITIONS=82} [2024-10-15 00:00:10,915 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 26 predicate places. [2024-10-15 00:00:10,915 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 82 transitions, 391 flow [2024-10-15 00:00:10,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2024-10-15 00:00:10,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:10,916 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:10,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-15 00:00:11,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:11,121 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-15 00:00:11,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:11,121 INFO L85 PathProgramCache]: Analyzing trace with hash 522411708, now seen corresponding path program 1 times [2024-10-15 00:00:11,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:11,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954654370] [2024-10-15 00:00:11,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:11,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:11,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:00:11,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:11,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954654370] [2024-10-15 00:00:11,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954654370] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:11,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:00:11,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-15 00:00:11,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971686873] [2024-10-15 00:00:11,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:11,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 00:00:11,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:11,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:00:11,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-15 00:00:11,209 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 60 [2024-10-15 00:00:11,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 391 flow. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 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) [2024-10-15 00:00:11,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:11,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 60 [2024-10-15 00:00:11,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:11,485 INFO L124 PetriNetUnfolderBase]: 1840/3398 cut-off events. [2024-10-15 00:00:11,485 INFO L125 PetriNetUnfolderBase]: For 1111/1115 co-relation queries the response was YES. [2024-10-15 00:00:11,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7606 conditions, 3398 events. 1840/3398 cut-off events. For 1111/1115 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 19986 event pairs, 1072 based on Foata normal form. 0/3118 useless extension candidates. Maximal degree in co-relation 7586. Up to 2151 conditions per place. [2024-10-15 00:00:11,502 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 69 selfloop transitions, 3 changer transitions 32/122 dead transitions. [2024-10-15 00:00:11,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 122 transitions, 756 flow [2024-10-15 00:00:11,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:00:11,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-15 00:00:11,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2024-10-15 00:00:11,504 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6366666666666667 [2024-10-15 00:00:11,504 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 391 flow. Second operand 5 states and 191 transitions. [2024-10-15 00:00:11,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 122 transitions, 756 flow [2024-10-15 00:00:11,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 122 transitions, 749 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:00:11,509 INFO L231 Difference]: Finished difference. Result has 83 places, 80 transitions, 381 flow [2024-10-15 00:00:11,509 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=83, PETRI_TRANSITIONS=80} [2024-10-15 00:00:11,510 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 30 predicate places. [2024-10-15 00:00:11,510 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 80 transitions, 381 flow [2024-10-15 00:00:11,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 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) [2024-10-15 00:00:11,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:11,511 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-15 00:00:11,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-15 00:00:11,511 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-15 00:00:11,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:11,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1283735314, now seen corresponding path program 2 times [2024-10-15 00:00:11,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:11,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271360735] [2024-10-15 00:00:11,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:11,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:11,656 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:11,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:11,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271360735] [2024-10-15 00:00:11,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271360735] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:11,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322654940] [2024-10-15 00:00:11,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:00:11,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:11,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:11,659 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) [2024-10-15 00:00:11,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 00:00:11,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:00:11,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:00:11,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 00:00:11,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:11,756 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:00:11,756 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:00:11,784 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:00:11,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322654940] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:00:11,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:00:11,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-15 00:00:11,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374773298] [2024-10-15 00:00:11,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:00:11,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-15 00:00:11,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:11,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-15 00:00:11,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-15 00:00:11,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-10-15 00:00:11,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 80 transitions, 381 flow. Second operand has 14 states, 14 states have (on average 23.142857142857142) internal successors, (324), 14 states have internal predecessors, (324), 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) [2024-10-15 00:00:11,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:11,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-10-15 00:00:11,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:12,326 INFO L124 PetriNetUnfolderBase]: 1511/2881 cut-off events. [2024-10-15 00:00:12,327 INFO L125 PetriNetUnfolderBase]: For 1007/1011 co-relation queries the response was YES. [2024-10-15 00:00:12,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6568 conditions, 2881 events. 1511/2881 cut-off events. For 1007/1011 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 17070 event pairs, 920 based on Foata normal form. 4/2769 useless extension candidates. Maximal degree in co-relation 6546. Up to 2117 conditions per place. [2024-10-15 00:00:12,346 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 33 selfloop transitions, 34 changer transitions 0/85 dead transitions. [2024-10-15 00:00:12,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 85 transitions, 545 flow [2024-10-15 00:00:12,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-15 00:00:12,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-15 00:00:12,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 594 transitions. [2024-10-15 00:00:12,349 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-10-15 00:00:12,349 INFO L175 Difference]: Start difference. First operand has 83 places, 80 transitions, 381 flow. Second operand 24 states and 594 transitions. [2024-10-15 00:00:12,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 85 transitions, 545 flow [2024-10-15 00:00:12,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 85 transitions, 532 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-15 00:00:12,359 INFO L231 Difference]: Finished difference. Result has 101 places, 85 transitions, 479 flow [2024-10-15 00:00:12,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=479, PETRI_PLACES=101, PETRI_TRANSITIONS=85} [2024-10-15 00:00:12,361 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 48 predicate places. [2024-10-15 00:00:12,361 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 85 transitions, 479 flow [2024-10-15 00:00:12,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.142857142857142) internal successors, (324), 14 states have internal predecessors, (324), 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) [2024-10-15 00:00:12,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:12,362 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:12,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-15 00:00:12,563 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,SelfDestructingSolverStorable11 [2024-10-15 00:00:12,564 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-15 00:00:12,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:12,564 INFO L85 PathProgramCache]: Analyzing trace with hash 2053061558, now seen corresponding path program 1 times [2024-10-15 00:00:12,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:12,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532439634] [2024-10-15 00:00:12,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:12,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:12,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-15 00:00:12,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:12,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532439634] [2024-10-15 00:00:12,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532439634] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:12,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:00:12,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 00:00:12,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722333267] [2024-10-15 00:00:12,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:12,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 00:00:12,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:12,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:00:12,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-15 00:00:12,676 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 60 [2024-10-15 00:00:12,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 85 transitions, 479 flow. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 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) [2024-10-15 00:00:12,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:12,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 60 [2024-10-15 00:00:12,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:12,917 INFO L124 PetriNetUnfolderBase]: 1209/2287 cut-off events. [2024-10-15 00:00:12,918 INFO L125 PetriNetUnfolderBase]: For 746/750 co-relation queries the response was YES. [2024-10-15 00:00:12,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5147 conditions, 2287 events. 1209/2287 cut-off events. For 746/750 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 12598 event pairs, 704 based on Foata normal form. 0/2071 useless extension candidates. Maximal degree in co-relation 5125. Up to 1174 conditions per place. [2024-10-15 00:00:12,930 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 93 selfloop transitions, 10 changer transitions 4/124 dead transitions. [2024-10-15 00:00:12,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 124 transitions, 811 flow [2024-10-15 00:00:12,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:00:12,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-15 00:00:12,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 197 transitions. [2024-10-15 00:00:12,932 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6566666666666666 [2024-10-15 00:00:12,932 INFO L175 Difference]: Start difference. First operand has 101 places, 85 transitions, 479 flow. Second operand 5 states and 197 transitions. [2024-10-15 00:00:12,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 124 transitions, 811 flow [2024-10-15 00:00:12,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 124 transitions, 711 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-10-15 00:00:12,936 INFO L231 Difference]: Finished difference. Result has 95 places, 87 transitions, 420 flow [2024-10-15 00:00:12,937 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=420, PETRI_PLACES=95, PETRI_TRANSITIONS=87} [2024-10-15 00:00:12,937 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 42 predicate places. [2024-10-15 00:00:12,938 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 87 transitions, 420 flow [2024-10-15 00:00:12,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 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) [2024-10-15 00:00:12,938 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:12,938 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:12,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-15 00:00:12,938 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-15 00:00:12,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:12,939 INFO L85 PathProgramCache]: Analyzing trace with hash 109569920, now seen corresponding path program 1 times [2024-10-15 00:00:12,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:12,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062654749] [2024-10-15 00:00:12,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:12,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:13,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-15 00:00:13,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:13,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062654749] [2024-10-15 00:00:13,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062654749] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:00:13,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:00:13,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 00:00:13,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811662470] [2024-10-15 00:00:13,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:00:13,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 00:00:13,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:13,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:00:13,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-15 00:00:13,040 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 60 [2024-10-15 00:00:13,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 87 transitions, 420 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 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) [2024-10-15 00:00:13,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:13,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 60 [2024-10-15 00:00:13,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:13,244 INFO L124 PetriNetUnfolderBase]: 1021/1947 cut-off events. [2024-10-15 00:00:13,244 INFO L125 PetriNetUnfolderBase]: For 829/831 co-relation queries the response was YES. [2024-10-15 00:00:13,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4464 conditions, 1947 events. 1021/1947 cut-off events. For 829/831 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 10163 event pairs, 620 based on Foata normal form. 0/1813 useless extension candidates. Maximal degree in co-relation 4443. Up to 1189 conditions per place. [2024-10-15 00:00:13,255 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 60 selfloop transitions, 7 changer transitions 28/112 dead transitions. [2024-10-15 00:00:13,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 112 transitions, 677 flow [2024-10-15 00:00:13,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:00:13,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-15 00:00:13,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 188 transitions. [2024-10-15 00:00:13,257 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6266666666666667 [2024-10-15 00:00:13,257 INFO L175 Difference]: Start difference. First operand has 95 places, 87 transitions, 420 flow. Second operand 5 states and 188 transitions. [2024-10-15 00:00:13,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 112 transitions, 677 flow [2024-10-15 00:00:13,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 112 transitions, 662 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:00:13,262 INFO L231 Difference]: Finished difference. Result has 99 places, 84 transitions, 400 flow [2024-10-15 00:00:13,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=400, PETRI_PLACES=99, PETRI_TRANSITIONS=84} [2024-10-15 00:00:13,264 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 46 predicate places. [2024-10-15 00:00:13,265 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 84 transitions, 400 flow [2024-10-15 00:00:13,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 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) [2024-10-15 00:00:13,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:13,266 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:13,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-15 00:00:13,267 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-15 00:00:13,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:13,268 INFO L85 PathProgramCache]: Analyzing trace with hash -292619549, now seen corresponding path program 1 times [2024-10-15 00:00:13,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:13,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372190416] [2024-10-15 00:00:13,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:13,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:13,345 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:00:13,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:13,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372190416] [2024-10-15 00:00:13,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372190416] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:13,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23932454] [2024-10-15 00:00:13,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:13,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:13,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:13,348 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) [2024-10-15 00:00:13,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 00:00:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:13,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 00:00:13,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:13,506 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:00:13,506 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:00:13,609 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:00:13,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23932454] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:00:13,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:00:13,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-10-15 00:00:13,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656105097] [2024-10-15 00:00:13,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:00:13,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-15 00:00:13,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:13,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-15 00:00:13,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-15 00:00:13,927 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-10-15 00:00:13,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 84 transitions, 400 flow. Second operand has 19 states, 19 states have (on average 21.0) internal successors, (399), 19 states have internal predecessors, (399), 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) [2024-10-15 00:00:13,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:13,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-10-15 00:00:13,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:14,706 INFO L124 PetriNetUnfolderBase]: 1449/2543 cut-off events. [2024-10-15 00:00:14,707 INFO L125 PetriNetUnfolderBase]: For 1236/1280 co-relation queries the response was YES. [2024-10-15 00:00:14,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6208 conditions, 2543 events. 1449/2543 cut-off events. For 1236/1280 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 13393 event pairs, 416 based on Foata normal form. 52/2509 useless extension candidates. Maximal degree in co-relation 6185. Up to 516 conditions per place. [2024-10-15 00:00:14,718 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 155 selfloop transitions, 42 changer transitions 10/221 dead transitions. [2024-10-15 00:00:14,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 221 transitions, 1270 flow [2024-10-15 00:00:14,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 00:00:14,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-15 00:00:14,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 433 transitions. [2024-10-15 00:00:14,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5154761904761904 [2024-10-15 00:00:14,720 INFO L175 Difference]: Start difference. First operand has 99 places, 84 transitions, 400 flow. Second operand 14 states and 433 transitions. [2024-10-15 00:00:14,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 221 transitions, 1270 flow [2024-10-15 00:00:14,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 221 transitions, 1204 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-10-15 00:00:14,729 INFO L231 Difference]: Finished difference. Result has 101 places, 88 transitions, 482 flow [2024-10-15 00:00:14,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=482, PETRI_PLACES=101, PETRI_TRANSITIONS=88} [2024-10-15 00:00:14,731 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 48 predicate places. [2024-10-15 00:00:14,731 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 88 transitions, 482 flow [2024-10-15 00:00:14,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.0) internal successors, (399), 19 states have internal predecessors, (399), 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) [2024-10-15 00:00:14,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:14,732 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-10-15 00:00:14,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-15 00:00:14,932 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,SelfDestructingSolverStorable14 [2024-10-15 00:00:14,933 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-15 00:00:14,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:14,934 INFO L85 PathProgramCache]: Analyzing trace with hash 693607989, now seen corresponding path program 1 times [2024-10-15 00:00:14,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:14,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271020047] [2024-10-15 00:00:14,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:14,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:15,123 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:15,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:15,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271020047] [2024-10-15 00:00:15,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271020047] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:15,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411928976] [2024-10-15 00:00:15,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:15,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:15,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:15,129 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) [2024-10-15 00:00:15,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-15 00:00:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:15,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-15 00:00:15,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:15,311 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:15,311 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:00:15,572 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:15,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411928976] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:00:15,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:00:15,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-10-15 00:00:15,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724905179] [2024-10-15 00:00:15,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:00:15,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-15 00:00:15,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:15,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-15 00:00:15,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-10-15 00:00:15,641 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-10-15 00:00:15,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 88 transitions, 482 flow. Second operand has 28 states, 28 states have (on average 23.071428571428573) internal successors, (646), 28 states have internal predecessors, (646), 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) [2024-10-15 00:00:15,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:15,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-10-15 00:00:15,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:16,434 INFO L124 PetriNetUnfolderBase]: 1382/2661 cut-off events. [2024-10-15 00:00:16,435 INFO L125 PetriNetUnfolderBase]: For 1921/1921 co-relation queries the response was YES. [2024-10-15 00:00:16,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6372 conditions, 2661 events. 1382/2661 cut-off events. For 1921/1921 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 15189 event pairs, 848 based on Foata normal form. 14/2479 useless extension candidates. Maximal degree in co-relation 6352. Up to 1938 conditions per place. [2024-10-15 00:00:16,476 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 39 selfloop transitions, 72 changer transitions 0/130 dead transitions. [2024-10-15 00:00:16,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 130 transitions, 1061 flow [2024-10-15 00:00:16,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-15 00:00:16,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-15 00:00:16,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 683 transitions. [2024-10-15 00:00:16,479 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4378205128205128 [2024-10-15 00:00:16,479 INFO L175 Difference]: Start difference. First operand has 101 places, 88 transitions, 482 flow. Second operand 26 states and 683 transitions. [2024-10-15 00:00:16,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 130 transitions, 1061 flow [2024-10-15 00:00:16,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 130 transitions, 1020 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-15 00:00:16,496 INFO L231 Difference]: Finished difference. Result has 127 places, 130 transitions, 994 flow [2024-10-15 00:00:16,496 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=994, PETRI_PLACES=127, PETRI_TRANSITIONS=130} [2024-10-15 00:00:16,496 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 74 predicate places. [2024-10-15 00:00:16,497 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 130 transitions, 994 flow [2024-10-15 00:00:16,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 23.071428571428573) internal successors, (646), 28 states have internal predecessors, (646), 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) [2024-10-15 00:00:16,502 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:16,502 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:16,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-15 00:00:16,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:16,708 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-15 00:00:16,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:16,709 INFO L85 PathProgramCache]: Analyzing trace with hash 767856493, now seen corresponding path program 1 times [2024-10-15 00:00:16,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:16,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572580113] [2024-10-15 00:00:16,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:16,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:16,876 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:00:16,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:16,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572580113] [2024-10-15 00:00:16,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572580113] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:16,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503258838] [2024-10-15 00:00:16,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:16,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:16,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:16,882 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) [2024-10-15 00:00:16,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-15 00:00:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:17,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 00:00:17,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:17,162 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:00:17,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:00:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:00:17,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503258838] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:00:17,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:00:17,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-10-15 00:00:17,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220287984] [2024-10-15 00:00:17,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:00:17,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-15 00:00:17,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:17,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-15 00:00:17,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-10-15 00:00:17,743 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-10-15 00:00:17,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 130 transitions, 994 flow. Second operand has 19 states, 19 states have (on average 21.210526315789473) internal successors, (403), 19 states have internal predecessors, (403), 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) [2024-10-15 00:00:17,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:17,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-10-15 00:00:17,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:18,668 INFO L124 PetriNetUnfolderBase]: 1357/2444 cut-off events. [2024-10-15 00:00:18,668 INFO L125 PetriNetUnfolderBase]: For 1553/1569 co-relation queries the response was YES. [2024-10-15 00:00:18,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6030 conditions, 2444 events. 1357/2444 cut-off events. For 1553/1569 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 12626 event pairs, 400 based on Foata normal form. 25/2305 useless extension candidates. Maximal degree in co-relation 6002. Up to 569 conditions per place. [2024-10-15 00:00:18,693 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 98 selfloop transitions, 71 changer transitions 67/249 dead transitions. [2024-10-15 00:00:18,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 249 transitions, 1836 flow [2024-10-15 00:00:18,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 00:00:18,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-15 00:00:18,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 426 transitions. [2024-10-15 00:00:18,699 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5071428571428571 [2024-10-15 00:00:18,699 INFO L175 Difference]: Start difference. First operand has 127 places, 130 transitions, 994 flow. Second operand 14 states and 426 transitions. [2024-10-15 00:00:18,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 249 transitions, 1836 flow [2024-10-15 00:00:18,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 249 transitions, 1651 flow, removed 54 selfloop flow, removed 12 redundant places. [2024-10-15 00:00:18,722 INFO L231 Difference]: Finished difference. Result has 128 places, 123 transitions, 917 flow [2024-10-15 00:00:18,722 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=917, PETRI_PLACES=128, PETRI_TRANSITIONS=123} [2024-10-15 00:00:18,722 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 75 predicate places. [2024-10-15 00:00:18,722 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 123 transitions, 917 flow [2024-10-15 00:00:18,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.210526315789473) internal successors, (403), 19 states have internal predecessors, (403), 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) [2024-10-15 00:00:18,723 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:18,723 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:18,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-15 00:00:18,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-15 00:00:18,924 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-15 00:00:18,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:18,928 INFO L85 PathProgramCache]: Analyzing trace with hash 771933349, now seen corresponding path program 1 times [2024-10-15 00:00:18,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:18,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805905681] [2024-10-15 00:00:18,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:18,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 00:00:19,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:19,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805905681] [2024-10-15 00:00:19,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805905681] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:19,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478724721] [2024-10-15 00:00:19,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:19,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:19,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:19,067 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) [2024-10-15 00:00:19,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-15 00:00:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:19,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 00:00:19,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:19,328 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:00:19,328 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:00:19,476 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:00:19,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478724721] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:00:19,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:00:19,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-10-15 00:00:19,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083402952] [2024-10-15 00:00:19,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:00:19,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-15 00:00:19,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:19,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-15 00:00:19,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-10-15 00:00:19,851 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-10-15 00:00:19,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 123 transitions, 917 flow. Second operand has 19 states, 19 states have (on average 21.157894736842106) internal successors, (402), 19 states have internal predecessors, (402), 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) [2024-10-15 00:00:19,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:19,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-10-15 00:00:19,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:20,983 INFO L124 PetriNetUnfolderBase]: 1659/2909 cut-off events. [2024-10-15 00:00:20,987 INFO L125 PetriNetUnfolderBase]: For 2546/2566 co-relation queries the response was YES. [2024-10-15 00:00:20,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7737 conditions, 2909 events. 1659/2909 cut-off events. For 2546/2566 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 14995 event pairs, 554 based on Foata normal form. 52/2900 useless extension candidates. Maximal degree in co-relation 7710. Up to 880 conditions per place. [2024-10-15 00:00:21,020 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 217 selfloop transitions, 69 changer transitions 10/309 dead transitions. [2024-10-15 00:00:21,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 309 transitions, 2440 flow [2024-10-15 00:00:21,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-15 00:00:21,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-15 00:00:21,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 505 transitions. [2024-10-15 00:00:21,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4950980392156863 [2024-10-15 00:00:21,024 INFO L175 Difference]: Start difference. First operand has 128 places, 123 transitions, 917 flow. Second operand 17 states and 505 transitions. [2024-10-15 00:00:21,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 309 transitions, 2440 flow [2024-10-15 00:00:21,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 309 transitions, 2240 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-10-15 00:00:21,039 INFO L231 Difference]: Finished difference. Result has 132 places, 160 transitions, 1451 flow [2024-10-15 00:00:21,040 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1451, PETRI_PLACES=132, PETRI_TRANSITIONS=160} [2024-10-15 00:00:21,040 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 79 predicate places. [2024-10-15 00:00:21,041 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 160 transitions, 1451 flow [2024-10-15 00:00:21,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.157894736842106) internal successors, (402), 19 states have internal predecessors, (402), 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) [2024-10-15 00:00:21,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:21,042 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:21,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-15 00:00:21,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-15 00:00:21,243 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-15 00:00:21,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:21,244 INFO L85 PathProgramCache]: Analyzing trace with hash -227915218, now seen corresponding path program 1 times [2024-10-15 00:00:21,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:21,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593656932] [2024-10-15 00:00:21,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:21,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:21,336 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-15 00:00:21,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:21,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593656932] [2024-10-15 00:00:21,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593656932] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:21,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646014782] [2024-10-15 00:00:21,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:21,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:21,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:21,339 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) [2024-10-15 00:00:21,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-15 00:00:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:21,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 00:00:21,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:21,498 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:00:21,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:00:21,593 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:00:21,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646014782] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:00:21,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:00:21,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2024-10-15 00:00:21,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514141973] [2024-10-15 00:00:21,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:00:21,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-15 00:00:21,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:21,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-15 00:00:21,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-10-15 00:00:21,834 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-10-15 00:00:21,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 160 transitions, 1451 flow. Second operand has 19 states, 19 states have (on average 21.36842105263158) internal successors, (406), 19 states have internal predecessors, (406), 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) [2024-10-15 00:00:21,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:21,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-10-15 00:00:21,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:22,513 INFO L124 PetriNetUnfolderBase]: 1881/3284 cut-off events. [2024-10-15 00:00:22,514 INFO L125 PetriNetUnfolderBase]: For 3705/3741 co-relation queries the response was YES. [2024-10-15 00:00:22,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8792 conditions, 3284 events. 1881/3284 cut-off events. For 3705/3741 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 16701 event pairs, 653 based on Foata normal form. 33/3115 useless extension candidates. Maximal degree in co-relation 8761. Up to 1171 conditions per place. [2024-10-15 00:00:22,542 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 152 selfloop transitions, 64 changer transitions 77/307 dead transitions. [2024-10-15 00:00:22,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 307 transitions, 2659 flow [2024-10-15 00:00:22,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-15 00:00:22,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-15 00:00:22,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 498 transitions. [2024-10-15 00:00:22,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48823529411764705 [2024-10-15 00:00:22,546 INFO L175 Difference]: Start difference. First operand has 132 places, 160 transitions, 1451 flow. Second operand 17 states and 498 transitions. [2024-10-15 00:00:22,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 307 transitions, 2659 flow [2024-10-15 00:00:22,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 307 transitions, 2593 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-10-15 00:00:22,591 INFO L231 Difference]: Finished difference. Result has 146 places, 158 transitions, 1557 flow [2024-10-15 00:00:22,591 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1429, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1557, PETRI_PLACES=146, PETRI_TRANSITIONS=158} [2024-10-15 00:00:22,592 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 93 predicate places. [2024-10-15 00:00:22,592 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 158 transitions, 1557 flow [2024-10-15 00:00:22,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 21.36842105263158) internal successors, (406), 19 states have internal predecessors, (406), 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) [2024-10-15 00:00:22,592 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:22,592 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:22,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-15 00:00:22,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:22,793 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-15 00:00:22,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:22,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1516570991, now seen corresponding path program 2 times [2024-10-15 00:00:22,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:22,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746368980] [2024-10-15 00:00:22,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:22,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:23,149 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:00:23,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:23,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746368980] [2024-10-15 00:00:23,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746368980] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:23,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752886090] [2024-10-15 00:00:23,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:00:23,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:23,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:23,153 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) [2024-10-15 00:00:23,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-15 00:00:23,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:00:23,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:00:23,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:00:23,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:23,349 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-15 00:00:23,350 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:00:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-15 00:00:23,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752886090] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:00:23,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:00:23,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 3, 3] total 15 [2024-10-15 00:00:23,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631279051] [2024-10-15 00:00:23,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:00:23,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-15 00:00:23,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:23,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-15 00:00:23,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-10-15 00:00:23,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-10-15 00:00:23,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 158 transitions, 1557 flow. Second operand has 16 states, 16 states have (on average 17.3125) internal successors, (277), 16 states have internal predecessors, (277), 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) [2024-10-15 00:00:23,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:23,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-10-15 00:00:23,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:24,751 INFO L124 PetriNetUnfolderBase]: 2594/4472 cut-off events. [2024-10-15 00:00:24,751 INFO L125 PetriNetUnfolderBase]: For 6300/6340 co-relation queries the response was YES. [2024-10-15 00:00:24,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13100 conditions, 4472 events. 2594/4472 cut-off events. For 6300/6340 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 24276 event pairs, 720 based on Foata normal form. 68/4474 useless extension candidates. Maximal degree in co-relation 13065. Up to 1111 conditions per place. [2024-10-15 00:00:24,800 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 298 selfloop transitions, 28 changer transitions 16/356 dead transitions. [2024-10-15 00:00:24,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 356 transitions, 3451 flow [2024-10-15 00:00:24,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-15 00:00:24,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-15 00:00:24,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 417 transitions. [2024-10-15 00:00:24,806 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-10-15 00:00:24,806 INFO L175 Difference]: Start difference. First operand has 146 places, 158 transitions, 1557 flow. Second operand 16 states and 417 transitions. [2024-10-15 00:00:24,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 356 transitions, 3451 flow [2024-10-15 00:00:24,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 356 transitions, 3254 flow, removed 33 selfloop flow, removed 14 redundant places. [2024-10-15 00:00:24,865 INFO L231 Difference]: Finished difference. Result has 142 places, 168 transitions, 1611 flow [2024-10-15 00:00:24,869 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1468, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1611, PETRI_PLACES=142, PETRI_TRANSITIONS=168} [2024-10-15 00:00:24,870 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 89 predicate places. [2024-10-15 00:00:24,870 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 168 transitions, 1611 flow [2024-10-15 00:00:24,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 17.3125) internal successors, (277), 16 states have internal predecessors, (277), 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) [2024-10-15 00:00:24,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:24,870 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:24,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-15 00:00:25,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:25,073 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-15 00:00:25,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:25,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1220508121, now seen corresponding path program 2 times [2024-10-15 00:00:25,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:25,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115063820] [2024-10-15 00:00:25,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:25,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:25,366 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:00:25,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:25,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115063820] [2024-10-15 00:00:25,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115063820] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:25,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175808461] [2024-10-15 00:00:25,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:00:25,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:25,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:25,372 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) [2024-10-15 00:00:25,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-15 00:00:25,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:00:25,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:00:25,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:00:25,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:25,575 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-15 00:00:25,576 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:00:25,650 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-15 00:00:25,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175808461] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:00:25,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:00:25,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 3, 3] total 15 [2024-10-15 00:00:25,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599511528] [2024-10-15 00:00:25,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:00:25,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-15 00:00:25,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:25,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-15 00:00:25,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-10-15 00:00:25,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-10-15 00:00:25,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 168 transitions, 1611 flow. Second operand has 16 states, 16 states have (on average 17.5625) internal successors, (281), 16 states have internal predecessors, (281), 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) [2024-10-15 00:00:25,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:25,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-10-15 00:00:25,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:27,242 INFO L124 PetriNetUnfolderBase]: 2529/4397 cut-off events. [2024-10-15 00:00:27,242 INFO L125 PetriNetUnfolderBase]: For 6953/6953 co-relation queries the response was YES. [2024-10-15 00:00:27,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12913 conditions, 4397 events. 2529/4397 cut-off events. For 6953/6953 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 23822 event pairs, 762 based on Foata normal form. 37/4185 useless extension candidates. Maximal degree in co-relation 12880. Up to 1211 conditions per place. [2024-10-15 00:00:27,267 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 59 selfloop transitions, 65 changer transitions 219/345 dead transitions. [2024-10-15 00:00:27,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 345 transitions, 3359 flow [2024-10-15 00:00:27,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-15 00:00:27,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-15 00:00:27,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 488 transitions. [2024-10-15 00:00:27,270 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3873015873015873 [2024-10-15 00:00:27,270 INFO L175 Difference]: Start difference. First operand has 142 places, 168 transitions, 1611 flow. Second operand 21 states and 488 transitions. [2024-10-15 00:00:27,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 345 transitions, 3359 flow [2024-10-15 00:00:27,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 345 transitions, 3337 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-10-15 00:00:27,332 INFO L231 Difference]: Finished difference. Result has 156 places, 125 transitions, 1903 flow [2024-10-15 00:00:27,335 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1585, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1903, PETRI_PLACES=156, PETRI_TRANSITIONS=125} [2024-10-15 00:00:27,336 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 103 predicate places. [2024-10-15 00:00:27,336 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 125 transitions, 1903 flow [2024-10-15 00:00:27,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 17.5625) internal successors, (281), 16 states have internal predecessors, (281), 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) [2024-10-15 00:00:27,336 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:00:27,336 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 13, 12, 1, 1, 1] [2024-10-15 00:00:27,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-15 00:00:27,537 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,SelfDestructingSolverStorable20 [2024-10-15 00:00:27,537 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-10-15 00:00:27,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:00:27,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1101518592, now seen corresponding path program 2 times [2024-10-15 00:00:27,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:00:27,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582452365] [2024-10-15 00:00:27,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:00:27,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:00:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:00:28,264 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:00:28,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:00:28,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582452365] [2024-10-15 00:00:28,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582452365] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:00:28,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880618795] [2024-10-15 00:00:28,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:00:28,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:00:28,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:00:28,266 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) [2024-10-15 00:00:28,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-15 00:00:28,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:00:28,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:00:28,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 00:00:28,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:00:28,539 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-10-15 00:00:28,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:00:28,631 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-10-15 00:00:28,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880618795] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:00:28,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:00:28,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 3, 3] total 30 [2024-10-15 00:00:28,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991981036] [2024-10-15 00:00:28,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:00:28,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-15 00:00:28,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:00:28,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-15 00:00:28,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2024-10-15 00:00:28,742 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-10-15 00:00:28,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 125 transitions, 1903 flow. Second operand has 31 states, 31 states have (on average 23.096774193548388) internal successors, (716), 31 states have internal predecessors, (716), 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) [2024-10-15 00:00:28,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:00:28,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-10-15 00:00:28,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:00:29,389 INFO L124 PetriNetUnfolderBase]: 15/225 cut-off events. [2024-10-15 00:00:29,389 INFO L125 PetriNetUnfolderBase]: For 2276/2276 co-relation queries the response was YES. [2024-10-15 00:00:29,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1458 conditions, 225 events. 15/225 cut-off events. For 2276/2276 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 700 event pairs, 0 based on Foata normal form. 8/233 useless extension candidates. Maximal degree in co-relation 1429. Up to 70 conditions per place. [2024-10-15 00:00:29,390 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 0 selfloop transitions, 0 changer transitions 133/133 dead transitions. [2024-10-15 00:00:29,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 133 transitions, 2287 flow [2024-10-15 00:00:29,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-15 00:00:29,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-10-15 00:00:29,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 733 transitions. [2024-10-15 00:00:29,396 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4072222222222222 [2024-10-15 00:00:29,396 INFO L175 Difference]: Start difference. First operand has 156 places, 125 transitions, 1903 flow. Second operand 30 states and 733 transitions. [2024-10-15 00:00:29,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 133 transitions, 2287 flow [2024-10-15 00:00:29,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 133 transitions, 1944 flow, removed 13 selfloop flow, removed 23 redundant places. [2024-10-15 00:00:29,412 INFO L231 Difference]: Finished difference. Result has 103 places, 0 transitions, 0 flow [2024-10-15 00:00:29,412 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1561, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=0, PETRI_PLACES=103, PETRI_TRANSITIONS=0} [2024-10-15 00:00:29,412 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 50 predicate places. [2024-10-15 00:00:29,412 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 0 transitions, 0 flow [2024-10-15 00:00:29,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 23.096774193548388) internal successors, (716), 31 states have internal predecessors, (716), 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) [2024-10-15 00:00:29,418 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 22 remaining) [2024-10-15 00:00:29,419 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2024-10-15 00:00:29,421 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2024-10-15 00:00:29,421 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2024-10-15 00:00:29,421 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2024-10-15 00:00:29,421 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2024-10-15 00:00:29,421 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2024-10-15 00:00:29,421 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2024-10-15 00:00:29,421 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2024-10-15 00:00:29,422 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2024-10-15 00:00:29,422 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2024-10-15 00:00:29,422 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2024-10-15 00:00:29,422 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 22 remaining) [2024-10-15 00:00:29,425 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 22 remaining) [2024-10-15 00:00:29,425 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2024-10-15 00:00:29,425 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2024-10-15 00:00:29,425 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2024-10-15 00:00:29,425 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2024-10-15 00:00:29,425 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2024-10-15 00:00:29,425 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2024-10-15 00:00:29,426 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2024-10-15 00:00:29,426 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2024-10-15 00:00:29,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-15 00:00:29,626 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,SelfDestructingSolverStorable21 [2024-10-15 00:00:29,627 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:00:29,637 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-15 00:00:29,640 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-15 00:00:29,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 12:00:29 BasicIcfg [2024-10-15 00:00:29,649 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-15 00:00:29,650 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-15 00:00:29,650 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-15 00:00:29,650 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-15 00:00:29,650 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:00:04" (3/4) ... [2024-10-15 00:00:29,651 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-15 00:00:29,658 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-10-15 00:00:29,658 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-10-15 00:00:29,668 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 137 nodes and edges [2024-10-15 00:00:29,672 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2024-10-15 00:00:29,672 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-10-15 00:00:29,673 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-15 00:00:29,822 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-15 00:00:29,822 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-15 00:00:29,823 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-15 00:00:29,823 INFO L158 Benchmark]: Toolchain (without parser) took 27095.02ms. Allocated memory was 159.4MB in the beginning and 551.6MB in the end (delta: 392.2MB). Free memory was 85.6MB in the beginning and 361.2MB in the end (delta: -275.6MB). Peak memory consumption was 119.6MB. Max. memory is 16.1GB. [2024-10-15 00:00:29,823 INFO L158 Benchmark]: CDTParser took 1.03ms. Allocated memory is still 159.4MB. Free memory was 109.9MB in the beginning and 109.7MB in the end (delta: 241.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 00:00:29,825 INFO L158 Benchmark]: CACSL2BoogieTranslator took 387.04ms. Allocated memory is still 159.4MB. Free memory was 85.3MB in the beginning and 72.4MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-15 00:00:29,829 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.58ms. Allocated memory is still 159.4MB. Free memory was 72.4MB in the beginning and 70.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 00:00:29,829 INFO L158 Benchmark]: Boogie Preprocessor took 58.98ms. Allocated memory is still 159.4MB. Free memory was 70.6MB in the beginning and 68.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 00:00:29,830 INFO L158 Benchmark]: RCFGBuilder took 1146.62ms. Allocated memory was 159.4MB in the beginning and 237.0MB in the end (delta: 77.6MB). Free memory was 67.8MB in the beginning and 165.9MB in the end (delta: -98.2MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2024-10-15 00:00:29,830 INFO L158 Benchmark]: TraceAbstraction took 25275.74ms. Allocated memory was 237.0MB in the beginning and 551.6MB in the end (delta: 314.6MB). Free memory was 164.9MB in the beginning and 366.5MB in the end (delta: -201.6MB). Peak memory consumption was 112.0MB. Max. memory is 16.1GB. [2024-10-15 00:00:29,830 INFO L158 Benchmark]: Witness Printer took 173.09ms. Allocated memory is still 551.6MB. Free memory was 366.5MB in the beginning and 361.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-15 00:00:29,831 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.03ms. Allocated memory is still 159.4MB. Free memory was 109.9MB in the beginning and 109.7MB in the end (delta: 241.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 387.04ms. Allocated memory is still 159.4MB. Free memory was 85.3MB in the beginning and 72.4MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.58ms. Allocated memory is still 159.4MB. Free memory was 72.4MB in the beginning and 70.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.98ms. Allocated memory is still 159.4MB. Free memory was 70.6MB in the beginning and 68.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1146.62ms. Allocated memory was 159.4MB in the beginning and 237.0MB in the end (delta: 77.6MB). Free memory was 67.8MB in the beginning and 165.9MB in the end (delta: -98.2MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. * TraceAbstraction took 25275.74ms. Allocated memory was 237.0MB in the beginning and 551.6MB in the end (delta: 314.6MB). Free memory was 164.9MB in the beginning and 366.5MB in the end (delta: -201.6MB). Peak memory consumption was 112.0MB. Max. memory is 16.1GB. * Witness Printer took 173.09ms. Allocated memory is still 551.6MB. Free memory was 366.5MB in the beginning and 361.2MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 85 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 25.0s, OverallIterations: 22, TraceHistogramMax: 13, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 14.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3505 SdHoareTripleChecker+Valid, 7.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3248 mSDsluCounter, 2864 SdHoareTripleChecker+Invalid, 5.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2826 mSDsCounter, 293 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12443 IncrementalHoareTripleChecker+Invalid, 12736 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 293 mSolverCounterUnsat, 38 mSDtfsCounter, 12443 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 751 GetRequests, 400 SyntacticMatches, 11 SemanticMatches, 340 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2027 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1903occurred in iteration=21, InterpolantAutomatonStates: 243, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 640 NumberOfCodeBlocks, 552 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 829 ConstructedInterpolants, 0 QuantifiedInterpolants, 2768 SizeOfPredicates, 50 NumberOfNonLiveVariables, 1741 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 45 InterpolantComputations, 12 PerfectInterpolantSequences, 638/1180 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-15 00:00:29,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE