./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-name-comparator-trans.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 362ca5c35cce683744d8d619a442f154ce469608d45ae43ff282ddf886694959 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 14:03:12,462 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 14:03:12,517 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 14:03:12,522 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 14:03:12,522 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 14:03:12,551 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 14:03:12,552 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 14:03:12,553 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 14:03:12,554 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 14:03:12,555 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 14:03:12,555 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 14:03:12,555 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 14:03:12,556 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 14:03:12,556 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 14:03:12,558 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 14:03:12,558 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 14:03:12,558 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 14:03:12,559 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 14:03:12,559 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 14:03:12,559 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 14:03:12,559 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 14:03:12,562 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 14:03:12,563 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 14:03:12,563 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 14:03:12,563 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 14:03:12,563 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 14:03:12,563 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 14:03:12,564 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 14:03:12,564 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 14:03:12,564 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 14:03:12,564 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 14:03:12,564 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 14:03:12,564 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 14:03:12,565 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 14:03:12,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:03:12,565 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 14:03:12,565 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 14:03:12,565 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 14:03:12,565 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 14:03:12,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 14:03:12,566 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 14:03:12,566 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 14:03:12,567 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 14:03:12,567 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 14:03:12,568 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 362ca5c35cce683744d8d619a442f154ce469608d45ae43ff282ddf886694959 [2024-11-19 14:03:12,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 14:03:12,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 14:03:12,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 14:03:12,807 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 14:03:12,807 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 14:03:12,808 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2024-11-19 14:03:14,069 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 14:03:14,217 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 14:03:14,217 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2024-11-19 14:03:14,238 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02d070c13/316bb17af1f749ecb0b63e8742a22e94/FLAG7e969d3cb [2024-11-19 14:03:14,249 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02d070c13/316bb17af1f749ecb0b63e8742a22e94 [2024-11-19 14:03:14,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 14:03:14,252 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 14:03:14,252 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 14:03:14,252 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 14:03:14,257 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 14:03:14,258 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:03:14" (1/1) ... [2024-11-19 14:03:14,259 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78b5376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:14, skipping insertion in model container [2024-11-19 14:03:14,259 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:03:14" (1/1) ... [2024-11-19 14:03:14,297 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 14:03:14,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:03:14,522 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 14:03:14,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 14:03:14,562 INFO L204 MainTranslator]: Completed translation [2024-11-19 14:03:14,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:14 WrapperNode [2024-11-19 14:03:14,563 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 14:03:14,564 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 14:03:14,564 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 14:03:14,564 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 14:03:14,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:14" (1/1) ... [2024-11-19 14:03:14,579 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:14" (1/1) ... [2024-11-19 14:03:14,606 INFO L138 Inliner]: procedures = 25, calls = 30, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 356 [2024-11-19 14:03:14,606 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 14:03:14,607 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 14:03:14,607 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 14:03:14,607 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 14:03:14,616 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:14" (1/1) ... [2024-11-19 14:03:14,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:14" (1/1) ... [2024-11-19 14:03:14,619 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:14" (1/1) ... [2024-11-19 14:03:14,633 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-19 14:03:14,634 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:14" (1/1) ... [2024-11-19 14:03:14,634 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:14" (1/1) ... [2024-11-19 14:03:14,641 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:14" (1/1) ... [2024-11-19 14:03:14,645 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:14" (1/1) ... [2024-11-19 14:03:14,647 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:14" (1/1) ... [2024-11-19 14:03:14,648 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:14" (1/1) ... [2024-11-19 14:03:14,654 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 14:03:14,655 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 14:03:14,655 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 14:03:14,658 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 14:03:14,658 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:14" (1/1) ... [2024-11-19 14:03:14,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 14:03:14,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:14,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 14:03:14,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 14:03:14,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 14:03:14,726 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 14:03:14,726 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 14:03:14,727 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 14:03:14,727 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 14:03:14,727 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 14:03:14,727 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 14:03:14,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 14:03:14,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 14:03:14,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 14:03:14,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 14:03:14,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 14:03:14,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 14:03:14,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 14:03:14,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 14:03:14,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 14:03:14,729 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 14:03:14,818 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 14:03:14,820 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 14:03:15,189 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 14:03:15,190 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 14:03:15,486 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 14:03:15,486 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 14:03:15,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:03:15 BoogieIcfgContainer [2024-11-19 14:03:15,487 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 14:03:15,490 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 14:03:15,490 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 14:03:15,492 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 14:03:15,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:03:14" (1/3) ... [2024-11-19 14:03:15,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b0c0607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:03:15, skipping insertion in model container [2024-11-19 14:03:15,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:03:14" (2/3) ... [2024-11-19 14:03:15,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b0c0607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:03:15, skipping insertion in model container [2024-11-19 14:03:15,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:03:15" (3/3) ... [2024-11-19 14:03:15,496 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2024-11-19 14:03:15,511 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 14:03:15,512 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-11-19 14:03:15,512 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 14:03:15,585 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 14:03:15,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 113 transitions, 247 flow [2024-11-19 14:03:15,660 INFO L124 PetriNetUnfolderBase]: 16/110 cut-off events. [2024-11-19 14:03:15,660 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 14:03:15,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 110 events. 16/110 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 437 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2024-11-19 14:03:15,665 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 113 transitions, 247 flow [2024-11-19 14:03:15,669 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 108 transitions, 231 flow [2024-11-19 14:03:15,678 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 14:03:15,683 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;@702a8bd2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 14:03:15,684 INFO L334 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2024-11-19 14:03:15,686 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 14:03:15,687 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-19 14:03:15,687 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 14:03:15,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:15,688 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 14:03:15,689 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:03:15,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:15,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1010455, now seen corresponding path program 1 times [2024-11-19 14:03:15,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:15,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920589150] [2024-11-19 14:03:15,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:15,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:15,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:15,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:15,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920589150] [2024-11-19 14:03:15,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920589150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:15,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:15,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:03:15,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670917516] [2024-11-19 14:03:15,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:15,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:15,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:15,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:15,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:03:16,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2024-11-19 14:03:16,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 108 transitions, 231 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:03:16,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:16,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2024-11-19 14:03:16,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:17,845 INFO L124 PetriNetUnfolderBase]: 12357/23532 cut-off events. [2024-11-19 14:03:17,845 INFO L125 PetriNetUnfolderBase]: For 537/537 co-relation queries the response was YES. [2024-11-19 14:03:17,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40272 conditions, 23532 events. 12357/23532 cut-off events. For 537/537 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 213241 event pairs, 8540 based on Foata normal form. 1/18431 useless extension candidates. Maximal degree in co-relation 38950. Up to 16288 conditions per place. [2024-11-19 14:03:18,007 INFO L140 encePairwiseOnDemand]: 105/113 looper letters, 51 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2024-11-19 14:03:18,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 104 transitions, 333 flow [2024-11-19 14:03:18,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:18,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:18,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 267 transitions. [2024-11-19 14:03:18,018 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5907079646017699 [2024-11-19 14:03:18,020 INFO L175 Difference]: Start difference. First operand has 102 places, 108 transitions, 231 flow. Second operand 4 states and 267 transitions. [2024-11-19 14:03:18,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 104 transitions, 333 flow [2024-11-19 14:03:18,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 104 transitions, 324 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-19 14:03:18,028 INFO L231 Difference]: Finished difference. Result has 99 places, 104 transitions, 222 flow [2024-11-19 14:03:18,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=99, PETRI_TRANSITIONS=104} [2024-11-19 14:03:18,033 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -3 predicate places. [2024-11-19 14:03:18,033 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 104 transitions, 222 flow [2024-11-19 14:03:18,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:03:18,034 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:18,034 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-19 14:03:18,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 14:03:18,034 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:03:18,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:18,035 INFO L85 PathProgramCache]: Analyzing trace with hash 31325149, now seen corresponding path program 1 times [2024-11-19 14:03:18,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:18,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916514334] [2024-11-19 14:03:18,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:18,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:18,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:18,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:18,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916514334] [2024-11-19 14:03:18,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916514334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:18,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:18,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:03:18,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890455986] [2024-11-19 14:03:18,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:18,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:18,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:18,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:18,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:03:18,109 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2024-11-19 14:03:18,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 104 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:03:18,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:18,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2024-11-19 14:03:18,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:19,487 INFO L124 PetriNetUnfolderBase]: 12358/23536 cut-off events. [2024-11-19 14:03:19,488 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2024-11-19 14:03:19,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40126 conditions, 23536 events. 12358/23536 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 213194 event pairs, 8540 based on Foata normal form. 1/18435 useless extension candidates. Maximal degree in co-relation 40098. Up to 16293 conditions per place. [2024-11-19 14:03:19,723 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 54 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2024-11-19 14:03:19,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 107 transitions, 350 flow [2024-11-19 14:03:19,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:19,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:19,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 267 transitions. [2024-11-19 14:03:19,725 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5907079646017699 [2024-11-19 14:03:19,725 INFO L175 Difference]: Start difference. First operand has 99 places, 104 transitions, 222 flow. Second operand 4 states and 267 transitions. [2024-11-19 14:03:19,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 107 transitions, 350 flow [2024-11-19 14:03:19,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 107 transitions, 336 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 14:03:19,729 INFO L231 Difference]: Finished difference. Result has 101 places, 107 transitions, 241 flow [2024-11-19 14:03:19,729 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=101, PETRI_TRANSITIONS=107} [2024-11-19 14:03:19,730 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, -1 predicate places. [2024-11-19 14:03:19,730 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 107 transitions, 241 flow [2024-11-19 14:03:19,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:03:19,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:19,730 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-19 14:03:19,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 14:03:19,731 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:03:19,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:19,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1200697911, now seen corresponding path program 1 times [2024-11-19 14:03:19,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:19,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906785084] [2024-11-19 14:03:19,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:19,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:19,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:19,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:19,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906785084] [2024-11-19 14:03:19,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906785084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:19,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161509893] [2024-11-19 14:03:19,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:19,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:19,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:19,853 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:03:19,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 14:03:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:19,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:03:19,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:19,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:19,959 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:03:19,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:19,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161509893] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:03:19,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:03:19,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-19 14:03:19,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610139229] [2024-11-19 14:03:19,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:03:19,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 14:03:19,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:19,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 14:03:19,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-19 14:03:20,010 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2024-11-19 14:03:20,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 107 transitions, 241 flow. Second operand has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:03:20,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:20,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2024-11-19 14:03:20,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:21,336 INFO L124 PetriNetUnfolderBase]: 12361/23548 cut-off events. [2024-11-19 14:03:21,337 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2024-11-19 14:03:21,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40162 conditions, 23548 events. 12361/23548 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 213401 event pairs, 8540 based on Foata normal form. 0/18443 useless extension candidates. Maximal degree in co-relation 40105. Up to 16296 conditions per place. [2024-11-19 14:03:21,464 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 54 selfloop transitions, 13 changer transitions 0/116 dead transitions. [2024-11-19 14:03:21,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 116 transitions, 411 flow [2024-11-19 14:03:21,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 14:03:21,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 14:03:21,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 590 transitions. [2024-11-19 14:03:21,466 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5221238938053098 [2024-11-19 14:03:21,466 INFO L175 Difference]: Start difference. First operand has 101 places, 107 transitions, 241 flow. Second operand 10 states and 590 transitions. [2024-11-19 14:03:21,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 116 transitions, 411 flow [2024-11-19 14:03:21,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 116 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:03:21,469 INFO L231 Difference]: Finished difference. Result has 112 places, 116 transitions, 318 flow [2024-11-19 14:03:21,469 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=318, PETRI_PLACES=112, PETRI_TRANSITIONS=116} [2024-11-19 14:03:21,470 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 10 predicate places. [2024-11-19 14:03:21,470 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 116 transitions, 318 flow [2024-11-19 14:03:21,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:03:21,470 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:21,471 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:21,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 14:03:21,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:21,675 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:03:21,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:21,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1353861537, now seen corresponding path program 1 times [2024-11-19 14:03:21,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:21,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4852706] [2024-11-19 14:03:21,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:21,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:21,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:21,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:21,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:21,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4852706] [2024-11-19 14:03:21,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4852706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:21,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:21,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:03:21,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142556117] [2024-11-19 14:03:21,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:21,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:21,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:21,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:21,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:03:21,774 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2024-11-19 14:03:21,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 116 transitions, 318 flow. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:03:21,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:21,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2024-11-19 14:03:21,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:24,629 INFO L124 PetriNetUnfolderBase]: 26973/48903 cut-off events. [2024-11-19 14:03:24,630 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2024-11-19 14:03:24,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85207 conditions, 48903 events. 26973/48903 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 2161. Compared 466114 event pairs, 11145 based on Foata normal form. 366/39751 useless extension candidates. Maximal degree in co-relation 85171. Up to 20231 conditions per place. [2024-11-19 14:03:25,066 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 146 selfloop transitions, 3 changer transitions 0/197 dead transitions. [2024-11-19 14:03:25,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 197 transitions, 786 flow [2024-11-19 14:03:25,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:25,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:25,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2024-11-19 14:03:25,068 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7676991150442478 [2024-11-19 14:03:25,068 INFO L175 Difference]: Start difference. First operand has 112 places, 116 transitions, 318 flow. Second operand 4 states and 347 transitions. [2024-11-19 14:03:25,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 197 transitions, 786 flow [2024-11-19 14:03:25,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 197 transitions, 756 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-19 14:03:25,073 INFO L231 Difference]: Finished difference. Result has 114 places, 118 transitions, 310 flow [2024-11-19 14:03:25,074 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=310, PETRI_PLACES=114, PETRI_TRANSITIONS=118} [2024-11-19 14:03:25,075 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 12 predicate places. [2024-11-19 14:03:25,076 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 118 transitions, 310 flow [2024-11-19 14:03:25,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:03:25,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:25,076 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:25,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 14:03:25,077 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:03:25,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:25,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1827894053, now seen corresponding path program 1 times [2024-11-19 14:03:25,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:25,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851854911] [2024-11-19 14:03:25,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:25,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:25,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:25,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:25,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851854911] [2024-11-19 14:03:25,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851854911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:25,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:25,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 14:03:25,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268901797] [2024-11-19 14:03:25,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:25,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:25,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:25,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:25,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:03:25,147 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2024-11-19 14:03:25,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 118 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:03:25,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:25,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2024-11-19 14:03:25,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:30,341 INFO L124 PetriNetUnfolderBase]: 51877/90743 cut-off events. [2024-11-19 14:03:30,341 INFO L125 PetriNetUnfolderBase]: For 6288/7468 co-relation queries the response was YES. [2024-11-19 14:03:30,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164816 conditions, 90743 events. 51877/90743 cut-off events. For 6288/7468 co-relation queries the response was YES. Maximal size of possible extension queue 3617. Compared 899849 event pairs, 21438 based on Foata normal form. 726/75185 useless extension candidates. Maximal degree in co-relation 164782. Up to 38015 conditions per place. [2024-11-19 14:03:30,991 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 149 selfloop transitions, 3 changer transitions 0/200 dead transitions. [2024-11-19 14:03:30,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 200 transitions, 813 flow [2024-11-19 14:03:30,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:30,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:30,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 344 transitions. [2024-11-19 14:03:30,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7610619469026548 [2024-11-19 14:03:30,993 INFO L175 Difference]: Start difference. First operand has 114 places, 118 transitions, 310 flow. Second operand 4 states and 344 transitions. [2024-11-19 14:03:30,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 200 transitions, 813 flow [2024-11-19 14:03:30,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 200 transitions, 807 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:03:30,999 INFO L231 Difference]: Finished difference. Result has 118 places, 120 transitions, 330 flow [2024-11-19 14:03:30,999 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=330, PETRI_PLACES=118, PETRI_TRANSITIONS=120} [2024-11-19 14:03:31,000 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 16 predicate places. [2024-11-19 14:03:31,000 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 120 transitions, 330 flow [2024-11-19 14:03:31,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:03:31,000 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:31,000 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:31,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 14:03:31,001 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:03:31,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:31,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1148829827, now seen corresponding path program 1 times [2024-11-19 14:03:31,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:31,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811865629] [2024-11-19 14:03:31,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:31,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:31,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 14:03:31,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:31,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811865629] [2024-11-19 14:03:31,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811865629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:31,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:31,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 14:03:31,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393535500] [2024-11-19 14:03:31,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:31,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 14:03:31,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:31,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 14:03:31,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 14:03:31,037 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 113 [2024-11-19 14:03:31,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 120 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:03:31,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:31,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 113 [2024-11-19 14:03:31,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:35,875 INFO L124 PetriNetUnfolderBase]: 43219/73911 cut-off events. [2024-11-19 14:03:35,875 INFO L125 PetriNetUnfolderBase]: For 8743/10183 co-relation queries the response was YES. [2024-11-19 14:03:36,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141257 conditions, 73911 events. 43219/73911 cut-off events. For 8743/10183 co-relation queries the response was YES. Maximal size of possible extension queue 2705. Compared 688649 event pairs, 16970 based on Foata normal form. 0/63153 useless extension candidates. Maximal degree in co-relation 141221. Up to 32265 conditions per place. [2024-11-19 14:03:36,375 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 181 selfloop transitions, 4 changer transitions 0/235 dead transitions. [2024-11-19 14:03:36,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 235 transitions, 985 flow [2024-11-19 14:03:36,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 14:03:36,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 14:03:36,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 436 transitions. [2024-11-19 14:03:36,377 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7716814159292036 [2024-11-19 14:03:36,377 INFO L175 Difference]: Start difference. First operand has 118 places, 120 transitions, 330 flow. Second operand 5 states and 436 transitions. [2024-11-19 14:03:36,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 235 transitions, 985 flow [2024-11-19 14:03:36,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 235 transitions, 977 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 14:03:36,414 INFO L231 Difference]: Finished difference. Result has 124 places, 122 transitions, 353 flow [2024-11-19 14:03:36,414 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=353, PETRI_PLACES=124, PETRI_TRANSITIONS=122} [2024-11-19 14:03:36,414 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 22 predicate places. [2024-11-19 14:03:36,414 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 122 transitions, 353 flow [2024-11-19 14:03:36,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:03:36,415 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:36,415 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:36,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 14:03:36,415 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:03:36,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:36,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1219616327, now seen corresponding path program 1 times [2024-11-19 14:03:36,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:36,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096592542] [2024-11-19 14:03:36,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:36,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:36,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:03:36,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:36,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096592542] [2024-11-19 14:03:36,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096592542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:36,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 14:03:36,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 14:03:36,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150703047] [2024-11-19 14:03:36,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:36,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 14:03:36,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:36,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 14:03:36,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 14:03:36,450 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 113 [2024-11-19 14:03:36,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 122 transitions, 353 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:03:36,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:36,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 113 [2024-11-19 14:03:36,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:41,129 INFO L124 PetriNetUnfolderBase]: 40006/75809 cut-off events. [2024-11-19 14:03:41,129 INFO L125 PetriNetUnfolderBase]: For 17565/18785 co-relation queries the response was YES. [2024-11-19 14:03:41,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144034 conditions, 75809 events. 40006/75809 cut-off events. For 17565/18785 co-relation queries the response was YES. Maximal size of possible extension queue 2795. Compared 786718 event pairs, 29551 based on Foata normal form. 1/62708 useless extension candidates. Maximal degree in co-relation 144000. Up to 53445 conditions per place. [2024-11-19 14:03:41,757 INFO L140 encePairwiseOnDemand]: 110/113 looper letters, 69 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2024-11-19 14:03:41,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 121 transitions, 491 flow [2024-11-19 14:03:41,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 14:03:41,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 14:03:41,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2024-11-19 14:03:41,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6460176991150443 [2024-11-19 14:03:41,759 INFO L175 Difference]: Start difference. First operand has 124 places, 122 transitions, 353 flow. Second operand 3 states and 219 transitions. [2024-11-19 14:03:41,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 121 transitions, 491 flow [2024-11-19 14:03:41,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 121 transitions, 491 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 14:03:41,779 INFO L231 Difference]: Finished difference. Result has 126 places, 121 transitions, 353 flow [2024-11-19 14:03:41,780 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=353, PETRI_PLACES=126, PETRI_TRANSITIONS=121} [2024-11-19 14:03:41,780 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 24 predicate places. [2024-11-19 14:03:41,780 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 121 transitions, 353 flow [2024-11-19 14:03:41,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:03:41,781 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:41,781 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:41,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 14:03:41,781 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:03:41,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:41,781 INFO L85 PathProgramCache]: Analyzing trace with hash 920384031, now seen corresponding path program 1 times [2024-11-19 14:03:41,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:41,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677068132] [2024-11-19 14:03:41,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:41,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:41,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:03:41,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:41,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677068132] [2024-11-19 14:03:41,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677068132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:41,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509686672] [2024-11-19 14:03:41,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 14:03:41,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:41,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:41,859 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:03:41,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 14:03:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 14:03:41,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 14:03:41,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:41,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:03:41,969 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:03:41,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 14:03:41,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509686672] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:03:41,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:03:41,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-19 14:03:41,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540739053] [2024-11-19 14:03:41,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:03:41,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 14:03:41,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:41,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 14:03:41,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-19 14:03:42,009 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2024-11-19 14:03:42,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 121 transitions, 353 flow. Second operand has 10 states, 10 states have (on average 53.7) internal successors, (537), 10 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:03:42,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:42,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2024-11-19 14:03:42,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:46,833 INFO L124 PetriNetUnfolderBase]: 40004/75807 cut-off events. [2024-11-19 14:03:46,833 INFO L125 PetriNetUnfolderBase]: For 17571/18791 co-relation queries the response was YES. [2024-11-19 14:03:47,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144032 conditions, 75807 events. 40004/75807 cut-off events. For 17571/18791 co-relation queries the response was YES. Maximal size of possible extension queue 2795. Compared 786707 event pairs, 29551 based on Foata normal form. 2/62707 useless extension candidates. Maximal degree in co-relation 144004. Up to 53437 conditions per place. [2024-11-19 14:03:47,680 INFO L140 encePairwiseOnDemand]: 109/113 looper letters, 60 selfloop transitions, 10 changer transitions 0/119 dead transitions. [2024-11-19 14:03:47,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 119 transitions, 485 flow [2024-11-19 14:03:47,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 14:03:47,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 14:03:47,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 426 transitions. [2024-11-19 14:03:47,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.538558786346397 [2024-11-19 14:03:47,681 INFO L175 Difference]: Start difference. First operand has 126 places, 121 transitions, 353 flow. Second operand 7 states and 426 transitions. [2024-11-19 14:03:47,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 119 transitions, 485 flow [2024-11-19 14:03:47,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 119 transitions, 481 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 14:03:47,699 INFO L231 Difference]: Finished difference. Result has 130 places, 119 transitions, 361 flow [2024-11-19 14:03:47,700 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=361, PETRI_PLACES=130, PETRI_TRANSITIONS=119} [2024-11-19 14:03:47,700 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 28 predicate places. [2024-11-19 14:03:47,700 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 119 transitions, 361 flow [2024-11-19 14:03:47,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 53.7) internal successors, (537), 10 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:03:47,701 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:47,701 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-19 14:03:47,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 14:03:47,901 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,SelfDestructingSolverStorable7 [2024-11-19 14:03:47,901 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:03:47,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:47,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1240596317, now seen corresponding path program 2 times [2024-11-19 14:03:47,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:47,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811002517] [2024-11-19 14:03:47,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:03:47,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:47,916 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:03:47,916 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:03:47,942 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:03:47,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:47,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811002517] [2024-11-19 14:03:47,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811002517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:47,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491495066] [2024-11-19 14:03:47,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:03:47,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:47,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:47,949 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:03:47,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 14:03:48,009 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 14:03:48,009 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:03:48,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 14:03:48,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:48,032 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:03:48,033 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 14:03:48,058 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 14:03:48,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491495066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 14:03:48,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 14:03:48,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2024-11-19 14:03:48,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883999724] [2024-11-19 14:03:48,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 14:03:48,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 14:03:48,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:48,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 14:03:48,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 14:03:48,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 113 [2024-11-19 14:03:48,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 119 transitions, 361 flow. Second operand has 6 states, 6 states have (on average 53.666666666666664) internal successors, (322), 6 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:03:48,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:48,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 113 [2024-11-19 14:03:48,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 14:03:52,652 INFO L124 PetriNetUnfolderBase]: 40004/75806 cut-off events. [2024-11-19 14:03:52,652 INFO L125 PetriNetUnfolderBase]: For 17580/18800 co-relation queries the response was YES. [2024-11-19 14:03:53,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144034 conditions, 75806 events. 40004/75806 cut-off events. For 17580/18800 co-relation queries the response was YES. Maximal size of possible extension queue 2795. Compared 786712 event pairs, 29551 based on Foata normal form. 1/62706 useless extension candidates. Maximal degree in co-relation 144000. Up to 53434 conditions per place. [2024-11-19 14:03:53,276 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 56 selfloop transitions, 13 changer transitions 0/118 dead transitions. [2024-11-19 14:03:53,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 118 transitions, 489 flow [2024-11-19 14:03:53,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 14:03:53,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 14:03:53,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 263 transitions. [2024-11-19 14:03:53,278 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.581858407079646 [2024-11-19 14:03:53,278 INFO L175 Difference]: Start difference. First operand has 130 places, 119 transitions, 361 flow. Second operand 4 states and 263 transitions. [2024-11-19 14:03:53,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 118 transitions, 489 flow [2024-11-19 14:03:53,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 118 transitions, 471 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-19 14:03:53,296 INFO L231 Difference]: Finished difference. Result has 124 places, 118 transitions, 359 flow [2024-11-19 14:03:53,296 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=359, PETRI_PLACES=124, PETRI_TRANSITIONS=118} [2024-11-19 14:03:53,296 INFO L277 CegarLoopForPetriNet]: 102 programPoint places, 22 predicate places. [2024-11-19 14:03:53,297 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 118 transitions, 359 flow [2024-11-19 14:03:53,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.666666666666664) internal successors, (322), 6 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:03:53,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 14:03:53,297 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 14:03:53,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 14:03:53,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:53,498 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2024-11-19 14:03:53,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 14:03:53,498 INFO L85 PathProgramCache]: Analyzing trace with hash -728241185, now seen corresponding path program 2 times [2024-11-19 14:03:53,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 14:03:53,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76314320] [2024-11-19 14:03:53,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:03:53,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 14:03:53,522 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:03:53,522 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:03:53,588 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:03:53,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 14:03:53,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76314320] [2024-11-19 14:03:53,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76314320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 14:03:53,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11099190] [2024-11-19 14:03:53,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 14:03:53,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 14:03:53,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 14:03:53,590 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 14:03:53,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 14:03:53,657 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 14:03:53,657 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 14:03:53,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 14:03:53,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 14:03:53,693 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 14:03:53,693 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 14:03:53,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11099190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 14:03:53,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 14:03:53,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-19 14:03:53,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066894467] [2024-11-19 14:03:53,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 14:03:53,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 14:03:53,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 14:03:53,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 14:03:53,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 14:03:53,698 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 113 [2024-11-19 14:03:53,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 118 transitions, 359 flow. Second operand has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 14:03:53,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 14:03:53,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 113 [2024-11-19 14:03:53,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand