./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_longest.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:30:20,463 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:30:20,513 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:30:20,516 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:30:20,517 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:30:20,548 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:30:20,549 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:30:20,549 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:30:20,550 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:30:20,550 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:30:20,550 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:30:20,551 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:30:20,553 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:30:20,556 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:30:20,556 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:30:20,557 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:30:20,557 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:30:20,557 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:30:20,559 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:30:20,559 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:30:20,559 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:30:20,560 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:30:20,560 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:30:20,560 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:30:20,560 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:30:20,561 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:30:20,561 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:30:20,561 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:30:20,561 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:30:20,562 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:30:20,562 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:30:20,562 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:30:20,562 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:30:20,562 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:30:20,562 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:30:20,563 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:30:20,563 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:30:20,564 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:30:20,565 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:30:20,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:30:20,565 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:30:20,565 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:30:20,565 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:30:20,566 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:30:20,566 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 [2024-10-13 16:30:20,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:30:20,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:30:20,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:30:20,855 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:30:20,856 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:30:20,857 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_longest.i [2024-10-13 16:30:22,245 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:30:22,545 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:30:22,546 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_longest.i [2024-10-13 16:30:22,569 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33606b2fc/c4be941386a74a2a87d0d4c2a87342f3/FLAG59bd71dde [2024-10-13 16:30:22,584 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33606b2fc/c4be941386a74a2a87d0d4c2a87342f3 [2024-10-13 16:30:22,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:30:22,589 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:30:22,590 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:30:22,590 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:30:22,595 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:30:22,597 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:30:22" (1/1) ... [2024-10-13 16:30:22,599 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7453d827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:22, skipping insertion in model container [2024-10-13 16:30:22,599 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:30:22" (1/1) ... [2024-10-13 16:30:22,646 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:30:23,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:30:23,118 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:30:23,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:30:23,236 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:30:23,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:23 WrapperNode [2024-10-13 16:30:23,237 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:30:23,238 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:30:23,241 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:30:23,242 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:30:23,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:23" (1/1) ... [2024-10-13 16:30:23,269 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:23" (1/1) ... [2024-10-13 16:30:23,304 INFO L138 Inliner]: procedures = 274, calls = 56, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 263 [2024-10-13 16:30:23,304 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:30:23,305 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:30:23,305 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:30:23,305 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:30:23,315 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:23" (1/1) ... [2024-10-13 16:30:23,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:23" (1/1) ... [2024-10-13 16:30:23,321 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:23" (1/1) ... [2024-10-13 16:30:23,346 INFO L175 MemorySlicer]: Split 43 memory accesses to 4 slices as follows [2, 32, 5, 4]. 74 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5, 0]. The 18 writes are split as follows [0, 15, 0, 3]. [2024-10-13 16:30:23,346 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:23" (1/1) ... [2024-10-13 16:30:23,346 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:23" (1/1) ... [2024-10-13 16:30:23,357 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:23" (1/1) ... [2024-10-13 16:30:23,361 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:23" (1/1) ... [2024-10-13 16:30:23,363 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:23" (1/1) ... [2024-10-13 16:30:23,365 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:23" (1/1) ... [2024-10-13 16:30:23,368 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:30:23,369 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:30:23,369 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:30:23,369 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:30:23,370 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:23" (1/1) ... [2024-10-13 16:30:23,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:30:23,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:30:23,408 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 16:30:23,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 16:30:23,458 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-13 16:30:23,458 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-13 16:30:23,458 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-13 16:30:23,458 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-13 16:30:23,459 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 16:30:23,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:30:23,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:30:23,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 16:30:23,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-13 16:30:23,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:30:23,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:30:23,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 16:30:23,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-13 16:30:23,461 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 16:30:23,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:30:23,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:30:23,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:30:23,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 16:30:23,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-13 16:30:23,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:30:23,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:30:23,463 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:30:23,701 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:30:23,703 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:30:24,082 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:30:24,083 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:30:24,329 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:30:24,329 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 16:30:24,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:30:24 BoogieIcfgContainer [2024-10-13 16:30:24,330 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:30:24,332 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:30:24,332 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:30:24,335 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:30:24,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:30:22" (1/3) ... [2024-10-13 16:30:24,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed3729d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:30:24, skipping insertion in model container [2024-10-13 16:30:24,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:30:23" (2/3) ... [2024-10-13 16:30:24,337 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed3729d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:30:24, skipping insertion in model container [2024-10-13 16:30:24,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:30:24" (3/3) ... [2024-10-13 16:30:24,338 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2024-10-13 16:30:24,355 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:30:24,355 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-10-13 16:30:24,355 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:30:24,442 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 16:30:24,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 83 transitions, 180 flow [2024-10-13 16:30:24,526 INFO L124 PetriNetUnfolderBase]: 9/81 cut-off events. [2024-10-13 16:30:24,526 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 16:30:24,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 81 events. 9/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 208 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2024-10-13 16:30:24,536 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 83 transitions, 180 flow [2024-10-13 16:30:24,540 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 79 transitions, 167 flow [2024-10-13 16:30:24,553 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:30:24,560 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;@47c6987c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:30:24,561 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-10-13 16:30:24,569 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:30:24,569 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-10-13 16:30:24,569 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:30:24,570 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:24,570 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-13 16:30:24,571 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:24,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:24,578 INFO L85 PathProgramCache]: Analyzing trace with hash -593102147, now seen corresponding path program 1 times [2024-10-13 16:30:24,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:24,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4697856] [2024-10-13 16:30:24,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:24,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:25,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:25,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:25,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4697856] [2024-10-13 16:30:25,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4697856] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:25,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:25,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:30:25,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403349971] [2024-10-13 16:30:25,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:25,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:30:25,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:25,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:30:25,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:30:25,283 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-10-13 16:30:25,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:25,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:25,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-10-13 16:30:25,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:25,899 INFO L124 PetriNetUnfolderBase]: 1242/2581 cut-off events. [2024-10-13 16:30:25,899 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-10-13 16:30:25,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4578 conditions, 2581 events. 1242/2581 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 16513 event pairs, 264 based on Foata normal form. 60/2265 useless extension candidates. Maximal degree in co-relation 4506. Up to 1757 conditions per place. [2024-10-13 16:30:25,922 INFO L140 encePairwiseOnDemand]: 76/83 looper letters, 81 selfloop transitions, 6 changer transitions 0/117 dead transitions. [2024-10-13 16:30:25,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 117 transitions, 423 flow [2024-10-13 16:30:25,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:30:25,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:30:25,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 252 transitions. [2024-10-13 16:30:25,937 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6072289156626506 [2024-10-13 16:30:25,939 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 167 flow. Second operand 5 states and 252 transitions. [2024-10-13 16:30:25,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 117 transitions, 423 flow [2024-10-13 16:30:25,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 117 transitions, 416 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:30:25,949 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 206 flow [2024-10-13 16:30:25,951 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=81, PETRI_TRANSITIONS=83} [2024-10-13 16:30:25,957 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2024-10-13 16:30:25,957 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 206 flow [2024-10-13 16:30:25,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:25,958 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:25,958 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:25,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:30:25,959 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:25,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:25,959 INFO L85 PathProgramCache]: Analyzing trace with hash 390145210, now seen corresponding path program 1 times [2024-10-13 16:30:25,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:25,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324565307] [2024-10-13 16:30:25,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:25,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:26,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:26,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:26,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324565307] [2024-10-13 16:30:26,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324565307] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:26,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:26,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:30:26,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217454421] [2024-10-13 16:30:26,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:26,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:30:26,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:26,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:30:26,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:30:26,246 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-10-13 16:30:26,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 206 flow. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:26,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:26,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-10-13 16:30:26,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:26,737 INFO L124 PetriNetUnfolderBase]: 1326/2695 cut-off events. [2024-10-13 16:30:26,738 INFO L125 PetriNetUnfolderBase]: For 348/354 co-relation queries the response was YES. [2024-10-13 16:30:26,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5141 conditions, 2695 events. 1326/2695 cut-off events. For 348/354 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 17130 event pairs, 266 based on Foata normal form. 40/2367 useless extension candidates. Maximal degree in co-relation 4879. Up to 1807 conditions per place. [2024-10-13 16:30:26,754 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 102 selfloop transitions, 11 changer transitions 0/143 dead transitions. [2024-10-13 16:30:26,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 143 transitions, 572 flow [2024-10-13 16:30:26,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:30:26,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:30:26,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 340 transitions. [2024-10-13 16:30:26,760 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5851979345955249 [2024-10-13 16:30:26,760 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 206 flow. Second operand 7 states and 340 transitions. [2024-10-13 16:30:26,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 143 transitions, 572 flow [2024-10-13 16:30:26,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 143 transitions, 572 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:30:26,767 INFO L231 Difference]: Finished difference. Result has 90 places, 89 transitions, 275 flow [2024-10-13 16:30:26,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=275, PETRI_PLACES=90, PETRI_TRANSITIONS=89} [2024-10-13 16:30:26,769 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 13 predicate places. [2024-10-13 16:30:26,769 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 89 transitions, 275 flow [2024-10-13 16:30:26,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:26,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:26,770 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:26,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 16:30:26,771 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:26,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:26,772 INFO L85 PathProgramCache]: Analyzing trace with hash -743114382, now seen corresponding path program 1 times [2024-10-13 16:30:26,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:26,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082590665] [2024-10-13 16:30:26,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:26,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:26,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:26,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:26,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082590665] [2024-10-13 16:30:26,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082590665] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:26,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:26,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:30:26,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870210138] [2024-10-13 16:30:26,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:26,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:30:26,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:26,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:30:26,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:30:26,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2024-10-13 16:30:26,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 89 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:26,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:26,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2024-10-13 16:30:26,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:27,181 INFO L124 PetriNetUnfolderBase]: 1023/2371 cut-off events. [2024-10-13 16:30:27,181 INFO L125 PetriNetUnfolderBase]: For 437/437 co-relation queries the response was YES. [2024-10-13 16:30:27,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4328 conditions, 2371 events. 1023/2371 cut-off events. For 437/437 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 13907 event pairs, 483 based on Foata normal form. 41/2110 useless extension candidates. Maximal degree in co-relation 4318. Up to 884 conditions per place. [2024-10-13 16:30:27,197 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 63 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2024-10-13 16:30:27,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 96 transitions, 366 flow [2024-10-13 16:30:27,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:30:27,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:30:27,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2024-10-13 16:30:27,200 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7028112449799196 [2024-10-13 16:30:27,200 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 275 flow. Second operand 3 states and 175 transitions. [2024-10-13 16:30:27,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 96 transitions, 366 flow [2024-10-13 16:30:27,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 96 transitions, 331 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-10-13 16:30:27,205 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 167 flow [2024-10-13 16:30:27,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2024-10-13 16:30:27,206 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, -2 predicate places. [2024-10-13 16:30:27,207 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 167 flow [2024-10-13 16:30:27,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:27,207 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:27,207 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:27,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 16:30:27,207 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:27,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:27,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1168355787, now seen corresponding path program 1 times [2024-10-13 16:30:27,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:27,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784015017] [2024-10-13 16:30:27,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:27,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:27,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:27,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:27,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784015017] [2024-10-13 16:30:27,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784015017] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:27,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:27,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:30:27,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943886049] [2024-10-13 16:30:27,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:27,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:30:27,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:27,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:30:27,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:30:27,283 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-10-13 16:30:27,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:27,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:27,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-10-13 16:30:27,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:27,851 INFO L124 PetriNetUnfolderBase]: 1890/4150 cut-off events. [2024-10-13 16:30:27,851 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2024-10-13 16:30:27,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7404 conditions, 4150 events. 1890/4150 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 26961 event pairs, 949 based on Foata normal form. 138/3770 useless extension candidates. Maximal degree in co-relation 7398. Up to 1977 conditions per place. [2024-10-13 16:30:27,877 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 112 selfloop transitions, 3 changer transitions 0/143 dead transitions. [2024-10-13 16:30:27,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 143 transitions, 550 flow [2024-10-13 16:30:27,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:30:27,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:30:27,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-10-13 16:30:27,881 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7560240963855421 [2024-10-13 16:30:27,881 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 167 flow. Second operand 4 states and 251 transitions. [2024-10-13 16:30:27,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 143 transitions, 550 flow [2024-10-13 16:30:27,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 143 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:30:27,885 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 188 flow [2024-10-13 16:30:27,885 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2024-10-13 16:30:27,886 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2024-10-13 16:30:27,886 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 188 flow [2024-10-13 16:30:27,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:27,887 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:27,887 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:27,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 16:30:27,888 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:27,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:27,888 INFO L85 PathProgramCache]: Analyzing trace with hash -60220822, now seen corresponding path program 1 times [2024-10-13 16:30:27,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:27,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860803355] [2024-10-13 16:30:27,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:27,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:28,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:28,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:28,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860803355] [2024-10-13 16:30:28,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860803355] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:28,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:28,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 16:30:28,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122721732] [2024-10-13 16:30:28,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:28,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:30:28,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:28,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:30:28,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 16:30:28,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2024-10-13 16:30:28,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:28,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:28,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2024-10-13 16:30:28,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:28,584 INFO L124 PetriNetUnfolderBase]: 1715/3860 cut-off events. [2024-10-13 16:30:28,584 INFO L125 PetriNetUnfolderBase]: For 786/906 co-relation queries the response was YES. [2024-10-13 16:30:28,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7364 conditions, 3860 events. 1715/3860 cut-off events. For 786/906 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 25054 event pairs, 279 based on Foata normal form. 0/3418 useless extension candidates. Maximal degree in co-relation 7356. Up to 2409 conditions per place. [2024-10-13 16:30:28,609 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 74 selfloop transitions, 5 changer transitions 0/109 dead transitions. [2024-10-13 16:30:28,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 109 transitions, 464 flow [2024-10-13 16:30:28,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:30:28,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:30:28,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 251 transitions. [2024-10-13 16:30:28,610 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6048192771084338 [2024-10-13 16:30:28,610 INFO L175 Difference]: Start difference. First operand has 79 places, 77 transitions, 188 flow. Second operand 5 states and 251 transitions. [2024-10-13 16:30:28,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 109 transitions, 464 flow [2024-10-13 16:30:28,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 109 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:30:28,614 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 194 flow [2024-10-13 16:30:28,614 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=194, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2024-10-13 16:30:28,614 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 5 predicate places. [2024-10-13 16:30:28,615 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 194 flow [2024-10-13 16:30:28,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:28,615 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:28,615 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:28,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:30:28,616 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:28,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:28,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2052147989, now seen corresponding path program 1 times [2024-10-13 16:30:28,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:28,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79574622] [2024-10-13 16:30:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:28,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:28,684 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:28,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:28,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79574622] [2024-10-13 16:30:28,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79574622] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:30:28,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231740250] [2024-10-13 16:30:28,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:28,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:30:28,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:30:28,687 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:30:28,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:30:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:28,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:30:28,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:30:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:28,869 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:30:28,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231740250] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:28,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:30:28,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-13 16:30:28,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926836728] [2024-10-13 16:30:28,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:28,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:30:28,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:28,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:30:28,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:30:28,879 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 83 [2024-10-13 16:30:28,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:28,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:28,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 83 [2024-10-13 16:30:28,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:29,375 INFO L124 PetriNetUnfolderBase]: 1912/3875 cut-off events. [2024-10-13 16:30:29,375 INFO L125 PetriNetUnfolderBase]: For 397/397 co-relation queries the response was YES. [2024-10-13 16:30:29,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7853 conditions, 3875 events. 1912/3875 cut-off events. For 397/397 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 23695 event pairs, 118 based on Foata normal form. 70/3579 useless extension candidates. Maximal degree in co-relation 7845. Up to 1906 conditions per place. [2024-10-13 16:30:29,399 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 99 selfloop transitions, 5 changer transitions 0/131 dead transitions. [2024-10-13 16:30:29,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 131 transitions, 536 flow [2024-10-13 16:30:29,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:30:29,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:30:29,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2024-10-13 16:30:29,401 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6987951807228916 [2024-10-13 16:30:29,401 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 194 flow. Second operand 4 states and 232 transitions. [2024-10-13 16:30:29,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 131 transitions, 536 flow [2024-10-13 16:30:29,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 131 transitions, 510 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 16:30:29,405 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 190 flow [2024-10-13 16:30:29,406 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2024-10-13 16:30:29,406 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2024-10-13 16:30:29,407 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 190 flow [2024-10-13 16:30:29,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:29,407 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:29,407 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:29,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 16:30:29,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-13 16:30:29,608 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:29,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:29,609 INFO L85 PathProgramCache]: Analyzing trace with hash 746321772, now seen corresponding path program 1 times [2024-10-13 16:30:29,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:29,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39524636] [2024-10-13 16:30:29,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:29,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:30,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:30,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:30,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39524636] [2024-10-13 16:30:30,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39524636] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:30,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:30,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 16:30:30,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862374860] [2024-10-13 16:30:30,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:30,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 16:30:30,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:30,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 16:30:30,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:30:30,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 83 [2024-10-13 16:30:30,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 190 flow. Second operand has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:30,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:30,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 83 [2024-10-13 16:30:30,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:31,314 INFO L124 PetriNetUnfolderBase]: 2309/4775 cut-off events. [2024-10-13 16:30:31,315 INFO L125 PetriNetUnfolderBase]: For 1966/2042 co-relation queries the response was YES. [2024-10-13 16:30:31,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9926 conditions, 4775 events. 2309/4775 cut-off events. For 1966/2042 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 31036 event pairs, 444 based on Foata normal form. 22/4258 useless extension candidates. Maximal degree in co-relation 9918. Up to 2448 conditions per place. [2024-10-13 16:30:31,345 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 134 selfloop transitions, 8 changer transitions 0/167 dead transitions. [2024-10-13 16:30:31,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 167 transitions, 845 flow [2024-10-13 16:30:31,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 16:30:31,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 16:30:31,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 378 transitions. [2024-10-13 16:30:31,347 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5060240963855421 [2024-10-13 16:30:31,348 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 190 flow. Second operand 9 states and 378 transitions. [2024-10-13 16:30:31,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 167 transitions, 845 flow [2024-10-13 16:30:31,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 167 transitions, 765 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:30:31,353 INFO L231 Difference]: Finished difference. Result has 88 places, 78 transitions, 217 flow [2024-10-13 16:30:31,354 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=217, PETRI_PLACES=88, PETRI_TRANSITIONS=78} [2024-10-13 16:30:31,355 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 11 predicate places. [2024-10-13 16:30:31,355 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 78 transitions, 217 flow [2024-10-13 16:30:31,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:31,356 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:31,356 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:31,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 16:30:31,356 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:31,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:31,357 INFO L85 PathProgramCache]: Analyzing trace with hash 807922598, now seen corresponding path program 1 times [2024-10-13 16:30:31,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:31,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504977853] [2024-10-13 16:30:31,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:31,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:31,405 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:30:31,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:31,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504977853] [2024-10-13 16:30:31,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504977853] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:31,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:31,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:30:31,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035474111] [2024-10-13 16:30:31,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:31,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:30:31,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:31,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:30:31,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:30:31,416 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 83 [2024-10-13 16:30:31,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 78 transitions, 217 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:31,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:31,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 83 [2024-10-13 16:30:31,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:31,918 INFO L124 PetriNetUnfolderBase]: 1995/4229 cut-off events. [2024-10-13 16:30:31,919 INFO L125 PetriNetUnfolderBase]: For 992/1046 co-relation queries the response was YES. [2024-10-13 16:30:31,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8596 conditions, 4229 events. 1995/4229 cut-off events. For 992/1046 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 27451 event pairs, 349 based on Foata normal form. 0/3915 useless extension candidates. Maximal degree in co-relation 8586. Up to 1995 conditions per place. [2024-10-13 16:30:31,942 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 98 selfloop transitions, 6 changer transitions 6/138 dead transitions. [2024-10-13 16:30:31,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 138 transitions, 607 flow [2024-10-13 16:30:31,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:30:31,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:30:31,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2024-10-13 16:30:31,944 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6987951807228916 [2024-10-13 16:30:31,944 INFO L175 Difference]: Start difference. First operand has 88 places, 78 transitions, 217 flow. Second operand 4 states and 232 transitions. [2024-10-13 16:30:31,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 138 transitions, 607 flow [2024-10-13 16:30:31,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 138 transitions, 585 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 16:30:31,950 INFO L231 Difference]: Finished difference. Result has 87 places, 76 transitions, 221 flow [2024-10-13 16:30:31,950 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=221, PETRI_PLACES=87, PETRI_TRANSITIONS=76} [2024-10-13 16:30:31,951 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 10 predicate places. [2024-10-13 16:30:31,953 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 76 transitions, 221 flow [2024-10-13 16:30:31,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:31,953 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:31,953 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:31,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 16:30:31,954 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:31,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:31,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1661139235, now seen corresponding path program 1 times [2024-10-13 16:30:31,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:31,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368003512] [2024-10-13 16:30:31,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:31,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:32,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:32,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:32,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368003512] [2024-10-13 16:30:32,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368003512] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:32,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:32,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 16:30:32,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108578071] [2024-10-13 16:30:32,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:32,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 16:30:32,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:32,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 16:30:32,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:30:32,486 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 83 [2024-10-13 16:30:32,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 76 transitions, 221 flow. Second operand has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:32,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:32,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 83 [2024-10-13 16:30:32,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:33,175 INFO L124 PetriNetUnfolderBase]: 2223/4634 cut-off events. [2024-10-13 16:30:33,176 INFO L125 PetriNetUnfolderBase]: For 2786/2786 co-relation queries the response was YES. [2024-10-13 16:30:33,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10121 conditions, 4634 events. 2223/4634 cut-off events. For 2786/2786 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 30202 event pairs, 444 based on Foata normal form. 22/4239 useless extension candidates. Maximal degree in co-relation 10110. Up to 2448 conditions per place. [2024-10-13 16:30:33,203 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 129 selfloop transitions, 8 changer transitions 2/164 dead transitions. [2024-10-13 16:30:33,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 164 transitions, 881 flow [2024-10-13 16:30:33,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 16:30:33,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 16:30:33,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 375 transitions. [2024-10-13 16:30:33,205 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5020080321285141 [2024-10-13 16:30:33,205 INFO L175 Difference]: Start difference. First operand has 87 places, 76 transitions, 221 flow. Second operand 9 states and 375 transitions. [2024-10-13 16:30:33,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 164 transitions, 881 flow [2024-10-13 16:30:33,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 164 transitions, 821 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:30:33,211 INFO L231 Difference]: Finished difference. Result has 91 places, 75 transitions, 222 flow [2024-10-13 16:30:33,212 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=222, PETRI_PLACES=91, PETRI_TRANSITIONS=75} [2024-10-13 16:30:33,213 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 14 predicate places. [2024-10-13 16:30:33,214 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 75 transitions, 222 flow [2024-10-13 16:30:33,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:33,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:33,215 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:33,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 16:30:33,216 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:33,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:33,216 INFO L85 PathProgramCache]: Analyzing trace with hash -44322257, now seen corresponding path program 1 times [2024-10-13 16:30:33,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:33,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352071834] [2024-10-13 16:30:33,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:33,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:33,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:33,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:33,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352071834] [2024-10-13 16:30:33,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352071834] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:33,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:33,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:30:33,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006434335] [2024-10-13 16:30:33,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:33,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:30:33,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:33,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:30:33,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:30:33,282 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-10-13 16:30:33,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 75 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:33,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:33,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-10-13 16:30:33,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:33,830 INFO L124 PetriNetUnfolderBase]: 2829/5800 cut-off events. [2024-10-13 16:30:33,830 INFO L125 PetriNetUnfolderBase]: For 2565/2575 co-relation queries the response was YES. [2024-10-13 16:30:33,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12561 conditions, 5800 events. 2829/5800 cut-off events. For 2565/2575 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 39832 event pairs, 1541 based on Foata normal form. 144/5553 useless extension candidates. Maximal degree in co-relation 12549. Up to 3623 conditions per place. [2024-10-13 16:30:33,867 INFO L140 encePairwiseOnDemand]: 75/83 looper letters, 92 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2024-10-13 16:30:33,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 120 transitions, 567 flow [2024-10-13 16:30:33,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:30:33,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:30:33,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2024-10-13 16:30:33,869 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6596385542168675 [2024-10-13 16:30:33,869 INFO L175 Difference]: Start difference. First operand has 91 places, 75 transitions, 222 flow. Second operand 4 states and 219 transitions. [2024-10-13 16:30:33,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 120 transitions, 567 flow [2024-10-13 16:30:33,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 120 transitions, 552 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 16:30:33,877 INFO L231 Difference]: Finished difference. Result has 90 places, 77 transitions, 238 flow [2024-10-13 16:30:33,878 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=90, PETRI_TRANSITIONS=77} [2024-10-13 16:30:33,879 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 13 predicate places. [2024-10-13 16:30:33,880 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 77 transitions, 238 flow [2024-10-13 16:30:33,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:33,880 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:33,880 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:33,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 16:30:33,881 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:33,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:33,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1373004120, now seen corresponding path program 1 times [2024-10-13 16:30:33,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:33,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475029878] [2024-10-13 16:30:33,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:33,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:34,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:34,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:34,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475029878] [2024-10-13 16:30:34,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475029878] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:34,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:34,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 16:30:34,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908250274] [2024-10-13 16:30:34,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:34,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 16:30:34,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:34,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 16:30:34,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:30:34,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-10-13 16:30:34,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 77 transitions, 238 flow. Second operand has 8 states, 8 states have (on average 34.25) internal successors, (274), 8 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:34,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:34,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-10-13 16:30:34,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:35,079 INFO L124 PetriNetUnfolderBase]: 2825/5918 cut-off events. [2024-10-13 16:30:35,080 INFO L125 PetriNetUnfolderBase]: For 2574/2640 co-relation queries the response was YES. [2024-10-13 16:30:35,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13327 conditions, 5918 events. 2825/5918 cut-off events. For 2574/2640 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 41333 event pairs, 484 based on Foata normal form. 44/5585 useless extension candidates. Maximal degree in co-relation 13312. Up to 2530 conditions per place. [2024-10-13 16:30:35,114 INFO L140 encePairwiseOnDemand]: 68/83 looper letters, 147 selfloop transitions, 14 changer transitions 2/190 dead transitions. [2024-10-13 16:30:35,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 190 transitions, 988 flow [2024-10-13 16:30:35,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:30:35,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:30:35,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 461 transitions. [2024-10-13 16:30:35,116 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.555421686746988 [2024-10-13 16:30:35,116 INFO L175 Difference]: Start difference. First operand has 90 places, 77 transitions, 238 flow. Second operand 10 states and 461 transitions. [2024-10-13 16:30:35,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 190 transitions, 988 flow [2024-10-13 16:30:35,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 190 transitions, 985 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:30:35,125 INFO L231 Difference]: Finished difference. Result has 101 places, 84 transitions, 309 flow [2024-10-13 16:30:35,125 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=309, PETRI_PLACES=101, PETRI_TRANSITIONS=84} [2024-10-13 16:30:35,126 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 24 predicate places. [2024-10-13 16:30:35,126 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 84 transitions, 309 flow [2024-10-13 16:30:35,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.25) internal successors, (274), 8 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:35,126 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:35,126 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:35,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 16:30:35,127 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:35,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:35,127 INFO L85 PathProgramCache]: Analyzing trace with hash 386546034, now seen corresponding path program 1 times [2024-10-13 16:30:35,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:35,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371945971] [2024-10-13 16:30:35,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:35,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:35,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:35,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:35,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371945971] [2024-10-13 16:30:35,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371945971] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:35,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:35,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 16:30:35,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910492721] [2024-10-13 16:30:35,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:35,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 16:30:35,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:35,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 16:30:35,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:30:35,556 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-10-13 16:30:35,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 84 transitions, 309 flow. Second operand has 8 states, 8 states have (on average 34.25) internal successors, (274), 8 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:35,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:35,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-10-13 16:30:35,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:36,185 INFO L124 PetriNetUnfolderBase]: 2825/5918 cut-off events. [2024-10-13 16:30:36,185 INFO L125 PetriNetUnfolderBase]: For 3557/3623 co-relation queries the response was YES. [2024-10-13 16:30:36,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14545 conditions, 5918 events. 2825/5918 cut-off events. For 3557/3623 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 41336 event pairs, 484 based on Foata normal form. 44/5793 useless extension candidates. Maximal degree in co-relation 14528. Up to 2682 conditions per place. [2024-10-13 16:30:36,218 INFO L140 encePairwiseOnDemand]: 68/83 looper letters, 147 selfloop transitions, 14 changer transitions 2/190 dead transitions. [2024-10-13 16:30:36,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 190 transitions, 1050 flow [2024-10-13 16:30:36,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:30:36,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:30:36,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 460 transitions. [2024-10-13 16:30:36,220 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5542168674698795 [2024-10-13 16:30:36,220 INFO L175 Difference]: Start difference. First operand has 101 places, 84 transitions, 309 flow. Second operand 10 states and 460 transitions. [2024-10-13 16:30:36,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 190 transitions, 1050 flow [2024-10-13 16:30:36,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 190 transitions, 1038 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 16:30:36,234 INFO L231 Difference]: Finished difference. Result has 106 places, 84 transitions, 335 flow [2024-10-13 16:30:36,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=335, PETRI_PLACES=106, PETRI_TRANSITIONS=84} [2024-10-13 16:30:36,236 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 29 predicate places. [2024-10-13 16:30:36,236 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 84 transitions, 335 flow [2024-10-13 16:30:36,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.25) internal successors, (274), 8 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:36,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:36,237 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:36,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 16:30:36,238 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:36,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:36,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1145090277, now seen corresponding path program 1 times [2024-10-13 16:30:36,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:36,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711593501] [2024-10-13 16:30:36,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:36,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:36,322 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:36,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:36,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711593501] [2024-10-13 16:30:36,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711593501] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:30:36,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136582066] [2024-10-13 16:30:36,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:36,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:30:36,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:30:36,325 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:30:36,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:30:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:36,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:30:36,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:30:36,483 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:36,483 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:30:36,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136582066] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:36,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:30:36,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-13 16:30:36,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049591814] [2024-10-13 16:30:36,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:36,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:30:36,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:36,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:30:36,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:30:36,495 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 83 [2024-10-13 16:30:36,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 84 transitions, 335 flow. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:36,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:36,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 83 [2024-10-13 16:30:36,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:37,070 INFO L124 PetriNetUnfolderBase]: 3114/6127 cut-off events. [2024-10-13 16:30:37,070 INFO L125 PetriNetUnfolderBase]: For 4427/4461 co-relation queries the response was YES. [2024-10-13 16:30:37,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15845 conditions, 6127 events. 3114/6127 cut-off events. For 4427/4461 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 40817 event pairs, 680 based on Foata normal form. 150/6022 useless extension candidates. Maximal degree in co-relation 15826. Up to 3382 conditions per place. [2024-10-13 16:30:37,104 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 81 selfloop transitions, 5 changer transitions 0/110 dead transitions. [2024-10-13 16:30:37,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 110 transitions, 607 flow [2024-10-13 16:30:37,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:30:37,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:30:37,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 194 transitions. [2024-10-13 16:30:37,106 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5843373493975904 [2024-10-13 16:30:37,106 INFO L175 Difference]: Start difference. First operand has 106 places, 84 transitions, 335 flow. Second operand 4 states and 194 transitions. [2024-10-13 16:30:37,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 110 transitions, 607 flow [2024-10-13 16:30:37,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 110 transitions, 593 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 16:30:37,121 INFO L231 Difference]: Finished difference. Result has 101 places, 82 transitions, 323 flow [2024-10-13 16:30:37,121 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=323, PETRI_PLACES=101, PETRI_TRANSITIONS=82} [2024-10-13 16:30:37,122 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 24 predicate places. [2024-10-13 16:30:37,122 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 82 transitions, 323 flow [2024-10-13 16:30:37,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:37,122 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:37,122 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:37,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 16:30:37,323 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,SelfDestructingSolverStorable12 [2024-10-13 16:30:37,323 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:37,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:37,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1138061008, now seen corresponding path program 1 times [2024-10-13 16:30:37,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:37,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664491401] [2024-10-13 16:30:37,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:37,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:37,372 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:30:37,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:37,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664491401] [2024-10-13 16:30:37,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664491401] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:37,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:37,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:30:37,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705389313] [2024-10-13 16:30:37,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:37,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:30:37,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:37,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:30:37,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:30:37,386 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 83 [2024-10-13 16:30:37,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 82 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:37,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:37,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 83 [2024-10-13 16:30:37,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:37,965 INFO L124 PetriNetUnfolderBase]: 2756/5635 cut-off events. [2024-10-13 16:30:37,965 INFO L125 PetriNetUnfolderBase]: For 4468/4488 co-relation queries the response was YES. [2024-10-13 16:30:37,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14601 conditions, 5635 events. 2756/5635 cut-off events. For 4468/4488 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 37974 event pairs, 736 based on Foata normal form. 150/5640 useless extension candidates. Maximal degree in co-relation 14581. Up to 2857 conditions per place. [2024-10-13 16:30:38,001 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 85 selfloop transitions, 6 changer transitions 0/115 dead transitions. [2024-10-13 16:30:38,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 115 transitions, 627 flow [2024-10-13 16:30:38,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:30:38,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:30:38,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2024-10-13 16:30:38,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5993975903614458 [2024-10-13 16:30:38,004 INFO L175 Difference]: Start difference. First operand has 101 places, 82 transitions, 323 flow. Second operand 4 states and 199 transitions. [2024-10-13 16:30:38,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 115 transitions, 627 flow [2024-10-13 16:30:38,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 115 transitions, 617 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:30:38,021 INFO L231 Difference]: Finished difference. Result has 100 places, 81 transitions, 325 flow [2024-10-13 16:30:38,021 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=325, PETRI_PLACES=100, PETRI_TRANSITIONS=81} [2024-10-13 16:30:38,022 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 23 predicate places. [2024-10-13 16:30:38,022 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 81 transitions, 325 flow [2024-10-13 16:30:38,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:38,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:38,023 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:38,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 16:30:38,023 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:38,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:38,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1732516560, now seen corresponding path program 1 times [2024-10-13 16:30:38,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:38,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566162861] [2024-10-13 16:30:38,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:38,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:38,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:38,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:38,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566162861] [2024-10-13 16:30:38,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566162861] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:38,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:38,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:30:38,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959328345] [2024-10-13 16:30:38,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:38,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:30:38,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:38,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:30:38,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:30:38,099 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2024-10-13 16:30:38,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 81 transitions, 325 flow. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:38,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:38,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2024-10-13 16:30:38,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:38,522 INFO L124 PetriNetUnfolderBase]: 1742/3956 cut-off events. [2024-10-13 16:30:38,522 INFO L125 PetriNetUnfolderBase]: For 4096/4096 co-relation queries the response was YES. [2024-10-13 16:30:38,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10541 conditions, 3956 events. 1742/3956 cut-off events. For 4096/4096 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 25869 event pairs, 514 based on Foata normal form. 168/4043 useless extension candidates. Maximal degree in co-relation 10521. Up to 1962 conditions per place. [2024-10-13 16:30:38,541 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 64 selfloop transitions, 6 changer transitions 0/96 dead transitions. [2024-10-13 16:30:38,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 96 transitions, 531 flow [2024-10-13 16:30:38,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:30:38,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:30:38,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2024-10-13 16:30:38,543 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6626506024096386 [2024-10-13 16:30:38,543 INFO L175 Difference]: Start difference. First operand has 100 places, 81 transitions, 325 flow. Second operand 3 states and 165 transitions. [2024-10-13 16:30:38,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 96 transitions, 531 flow [2024-10-13 16:30:38,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 96 transitions, 512 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 16:30:38,552 INFO L231 Difference]: Finished difference. Result has 100 places, 79 transitions, 307 flow [2024-10-13 16:30:38,552 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=307, PETRI_PLACES=100, PETRI_TRANSITIONS=79} [2024-10-13 16:30:38,552 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 23 predicate places. [2024-10-13 16:30:38,552 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 79 transitions, 307 flow [2024-10-13 16:30:38,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:38,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:38,553 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:38,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 16:30:38,553 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:38,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:38,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1038421454, now seen corresponding path program 1 times [2024-10-13 16:30:38,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:38,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102132926] [2024-10-13 16:30:38,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:38,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:39,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:39,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:39,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102132926] [2024-10-13 16:30:39,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102132926] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:39,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:39,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 16:30:39,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264402294] [2024-10-13 16:30:39,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:39,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 16:30:39,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:39,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 16:30:39,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-13 16:30:39,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 83 [2024-10-13 16:30:39,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 79 transitions, 307 flow. Second operand has 11 states, 11 states have (on average 31.363636363636363) internal successors, (345), 11 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:39,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:39,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 83 [2024-10-13 16:30:39,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:40,349 INFO L124 PetriNetUnfolderBase]: 2594/5478 cut-off events. [2024-10-13 16:30:40,349 INFO L125 PetriNetUnfolderBase]: For 5044/5044 co-relation queries the response was YES. [2024-10-13 16:30:40,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15026 conditions, 5478 events. 2594/5478 cut-off events. For 5044/5044 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 34611 event pairs, 338 based on Foata normal form. 30/5368 useless extension candidates. Maximal degree in co-relation 15005. Up to 1174 conditions per place. [2024-10-13 16:30:40,384 INFO L140 encePairwiseOnDemand]: 70/83 looper letters, 168 selfloop transitions, 17 changer transitions 2/208 dead transitions. [2024-10-13 16:30:40,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 208 transitions, 1244 flow [2024-10-13 16:30:40,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 16:30:40,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 16:30:40,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 500 transitions. [2024-10-13 16:30:40,387 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5020080321285141 [2024-10-13 16:30:40,387 INFO L175 Difference]: Start difference. First operand has 100 places, 79 transitions, 307 flow. Second operand 12 states and 500 transitions. [2024-10-13 16:30:40,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 208 transitions, 1244 flow [2024-10-13 16:30:40,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 208 transitions, 1224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:30:40,402 INFO L231 Difference]: Finished difference. Result has 116 places, 88 transitions, 412 flow [2024-10-13 16:30:40,403 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=412, PETRI_PLACES=116, PETRI_TRANSITIONS=88} [2024-10-13 16:30:40,403 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 39 predicate places. [2024-10-13 16:30:40,403 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 88 transitions, 412 flow [2024-10-13 16:30:40,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 31.363636363636363) internal successors, (345), 11 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:40,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:40,404 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:40,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 16:30:40,404 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:40,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:40,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1127010571, now seen corresponding path program 1 times [2024-10-13 16:30:40,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:40,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260263691] [2024-10-13 16:30:40,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:40,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:40,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:40,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:40,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260263691] [2024-10-13 16:30:40,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260263691] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:40,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:40,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 16:30:40,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287775179] [2024-10-13 16:30:40,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:40,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:30:40,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:40,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:30:40,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 16:30:40,666 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-10-13 16:30:40,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 88 transitions, 412 flow. Second operand has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:40,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:40,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-10-13 16:30:40,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:41,173 INFO L124 PetriNetUnfolderBase]: 2376/5243 cut-off events. [2024-10-13 16:30:41,173 INFO L125 PetriNetUnfolderBase]: For 6392/6392 co-relation queries the response was YES. [2024-10-13 16:30:41,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14902 conditions, 5243 events. 2376/5243 cut-off events. For 6392/6392 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 34291 event pairs, 1317 based on Foata normal form. 35/5172 useless extension candidates. Maximal degree in co-relation 14875. Up to 2694 conditions per place. [2024-10-13 16:30:41,197 INFO L140 encePairwiseOnDemand]: 75/83 looper letters, 62 selfloop transitions, 16 changer transitions 0/103 dead transitions. [2024-10-13 16:30:41,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 103 transitions, 637 flow [2024-10-13 16:30:41,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 16:30:41,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 16:30:41,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 225 transitions. [2024-10-13 16:30:41,199 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5421686746987951 [2024-10-13 16:30:41,199 INFO L175 Difference]: Start difference. First operand has 116 places, 88 transitions, 412 flow. Second operand 5 states and 225 transitions. [2024-10-13 16:30:41,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 103 transitions, 637 flow [2024-10-13 16:30:41,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 103 transitions, 617 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-10-13 16:30:41,215 INFO L231 Difference]: Finished difference. Result has 114 places, 87 transitions, 422 flow [2024-10-13 16:30:41,215 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=422, PETRI_PLACES=114, PETRI_TRANSITIONS=87} [2024-10-13 16:30:41,216 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 37 predicate places. [2024-10-13 16:30:41,216 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 87 transitions, 422 flow [2024-10-13 16:30:41,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:41,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:41,216 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:41,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-13 16:30:41,217 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:41,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:41,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1699143016, now seen corresponding path program 1 times [2024-10-13 16:30:41,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:41,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647517586] [2024-10-13 16:30:41,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:41,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:41,296 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:41,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:41,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647517586] [2024-10-13 16:30:41,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647517586] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:41,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:41,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:30:41,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785808535] [2024-10-13 16:30:41,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:41,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:30:41,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:41,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:30:41,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:30:41,299 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2024-10-13 16:30:41,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 87 transitions, 422 flow. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:41,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:41,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2024-10-13 16:30:41,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:41,911 INFO L124 PetriNetUnfolderBase]: 2085/4644 cut-off events. [2024-10-13 16:30:41,912 INFO L125 PetriNetUnfolderBase]: For 6152/6152 co-relation queries the response was YES. [2024-10-13 16:30:41,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12986 conditions, 4644 events. 2085/4644 cut-off events. For 6152/6152 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 29910 event pairs, 1286 based on Foata normal form. 30/4566 useless extension candidates. Maximal degree in co-relation 12959. Up to 2429 conditions per place. [2024-10-13 16:30:41,955 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 76 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2024-10-13 16:30:41,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 104 transitions, 647 flow [2024-10-13 16:30:41,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:30:41,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:30:41,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2024-10-13 16:30:41,957 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6626506024096386 [2024-10-13 16:30:41,959 INFO L175 Difference]: Start difference. First operand has 114 places, 87 transitions, 422 flow. Second operand 3 states and 165 transitions. [2024-10-13 16:30:41,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 104 transitions, 647 flow [2024-10-13 16:30:41,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 104 transitions, 614 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 16:30:41,983 INFO L231 Difference]: Finished difference. Result has 112 places, 85 transitions, 385 flow [2024-10-13 16:30:41,984 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=385, PETRI_PLACES=112, PETRI_TRANSITIONS=85} [2024-10-13 16:30:41,984 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 35 predicate places. [2024-10-13 16:30:41,985 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 85 transitions, 385 flow [2024-10-13 16:30:41,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:41,986 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:41,986 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:41,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-13 16:30:41,986 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:41,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:41,987 INFO L85 PathProgramCache]: Analyzing trace with hash 850341670, now seen corresponding path program 1 times [2024-10-13 16:30:41,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:41,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374131614] [2024-10-13 16:30:41,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:41,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:42,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:42,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:42,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374131614] [2024-10-13 16:30:42,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374131614] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:42,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:42,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 16:30:42,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238318979] [2024-10-13 16:30:42,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:42,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 16:30:42,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:42,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 16:30:42,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-13 16:30:43,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2024-10-13 16:30:43,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 85 transitions, 385 flow. Second operand has 11 states, 11 states have (on average 32.54545454545455) internal successors, (358), 11 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:43,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:43,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2024-10-13 16:30:43,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:43,842 INFO L124 PetriNetUnfolderBase]: 2817/5963 cut-off events. [2024-10-13 16:30:43,843 INFO L125 PetriNetUnfolderBase]: For 6904/6904 co-relation queries the response was YES. [2024-10-13 16:30:43,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16670 conditions, 5963 events. 2817/5963 cut-off events. For 6904/6904 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 39327 event pairs, 460 based on Foata normal form. 26/5907 useless extension candidates. Maximal degree in co-relation 16642. Up to 1742 conditions per place. [2024-10-13 16:30:43,873 INFO L140 encePairwiseOnDemand]: 67/83 looper letters, 175 selfloop transitions, 20 changer transitions 10/227 dead transitions. [2024-10-13 16:30:43,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 227 transitions, 1433 flow [2024-10-13 16:30:43,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 16:30:43,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-13 16:30:43,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 644 transitions. [2024-10-13 16:30:43,876 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48493975903614456 [2024-10-13 16:30:43,876 INFO L175 Difference]: Start difference. First operand has 112 places, 85 transitions, 385 flow. Second operand 16 states and 644 transitions. [2024-10-13 16:30:43,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 227 transitions, 1433 flow [2024-10-13 16:30:43,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 227 transitions, 1421 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:30:43,899 INFO L231 Difference]: Finished difference. Result has 129 places, 96 transitions, 514 flow [2024-10-13 16:30:43,899 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=514, PETRI_PLACES=129, PETRI_TRANSITIONS=96} [2024-10-13 16:30:43,899 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 52 predicate places. [2024-10-13 16:30:43,900 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 96 transitions, 514 flow [2024-10-13 16:30:43,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 32.54545454545455) internal successors, (358), 11 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:43,900 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:43,900 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:43,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-13 16:30:43,901 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:43,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:43,901 INFO L85 PathProgramCache]: Analyzing trace with hash 799082124, now seen corresponding path program 1 times [2024-10-13 16:30:43,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:43,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733275255] [2024-10-13 16:30:43,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:43,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:44,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:44,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:44,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733275255] [2024-10-13 16:30:44,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733275255] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:44,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:44,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 16:30:44,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204117823] [2024-10-13 16:30:44,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:44,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 16:30:44,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:44,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 16:30:44,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-13 16:30:44,676 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2024-10-13 16:30:44,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 96 transitions, 514 flow. Second operand has 11 states, 11 states have (on average 32.54545454545455) internal successors, (358), 11 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:44,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:44,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2024-10-13 16:30:44,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:45,583 INFO L124 PetriNetUnfolderBase]: 2783/5897 cut-off events. [2024-10-13 16:30:45,583 INFO L125 PetriNetUnfolderBase]: For 8123/8123 co-relation queries the response was YES. [2024-10-13 16:30:45,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17132 conditions, 5897 events. 2783/5897 cut-off events. For 8123/8123 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 38853 event pairs, 467 based on Foata normal form. 26/5885 useless extension candidates. Maximal degree in co-relation 17101. Up to 1831 conditions per place. [2024-10-13 16:30:45,636 INFO L140 encePairwiseOnDemand]: 67/83 looper letters, 156 selfloop transitions, 18 changer transitions 18/214 dead transitions. [2024-10-13 16:30:45,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 214 transitions, 1413 flow [2024-10-13 16:30:45,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 16:30:45,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 16:30:45,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 572 transitions. [2024-10-13 16:30:45,638 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49225473321858865 [2024-10-13 16:30:45,638 INFO L175 Difference]: Start difference. First operand has 129 places, 96 transitions, 514 flow. Second operand 14 states and 572 transitions. [2024-10-13 16:30:45,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 214 transitions, 1413 flow [2024-10-13 16:30:45,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 214 transitions, 1386 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-10-13 16:30:45,669 INFO L231 Difference]: Finished difference. Result has 136 places, 95 transitions, 519 flow [2024-10-13 16:30:45,670 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=519, PETRI_PLACES=136, PETRI_TRANSITIONS=95} [2024-10-13 16:30:45,671 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 59 predicate places. [2024-10-13 16:30:45,671 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 95 transitions, 519 flow [2024-10-13 16:30:45,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 32.54545454545455) internal successors, (358), 11 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:45,671 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:45,671 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:45,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-13 16:30:45,672 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:45,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:45,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1851220930, now seen corresponding path program 1 times [2024-10-13 16:30:45,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:45,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24521144] [2024-10-13 16:30:45,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:45,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:46,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:46,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:46,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24521144] [2024-10-13 16:30:46,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24521144] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:30:46,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:30:46,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 16:30:46,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226465809] [2024-10-13 16:30:46,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:30:46,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 16:30:46,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:30:46,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 16:30:46,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:30:46,271 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-10-13 16:30:46,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 95 transitions, 519 flow. Second operand has 8 states, 8 states have (on average 36.125) internal successors, (289), 8 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:46,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:30:46,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-10-13 16:30:46,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:30:46,836 INFO L124 PetriNetUnfolderBase]: 2313/4949 cut-off events. [2024-10-13 16:30:46,836 INFO L125 PetriNetUnfolderBase]: For 7081/7081 co-relation queries the response was YES. [2024-10-13 16:30:46,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14311 conditions, 4949 events. 2313/4949 cut-off events. For 7081/7081 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 30976 event pairs, 533 based on Foata normal form. 36/4947 useless extension candidates. Maximal degree in co-relation 14280. Up to 2613 conditions per place. [2024-10-13 16:30:46,864 INFO L140 encePairwiseOnDemand]: 71/83 looper letters, 128 selfloop transitions, 13 changer transitions 10/175 dead transitions. [2024-10-13 16:30:46,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 175 transitions, 1145 flow [2024-10-13 16:30:46,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 16:30:46,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 16:30:46,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 435 transitions. [2024-10-13 16:30:46,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5240963855421686 [2024-10-13 16:30:46,866 INFO L175 Difference]: Start difference. First operand has 136 places, 95 transitions, 519 flow. Second operand 10 states and 435 transitions. [2024-10-13 16:30:46,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 175 transitions, 1145 flow [2024-10-13 16:30:46,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 175 transitions, 1101 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-10-13 16:30:46,887 INFO L231 Difference]: Finished difference. Result has 128 places, 91 transitions, 458 flow [2024-10-13 16:30:46,887 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=458, PETRI_PLACES=128, PETRI_TRANSITIONS=91} [2024-10-13 16:30:46,887 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 51 predicate places. [2024-10-13 16:30:46,888 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 91 transitions, 458 flow [2024-10-13 16:30:46,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.125) internal successors, (289), 8 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:30:46,888 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:30:46,888 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:30:46,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-13 16:30:46,889 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:30:46,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:30:46,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1882547316, now seen corresponding path program 1 times [2024-10-13 16:30:46,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:30:46,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212713058] [2024-10-13 16:30:46,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:46,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:30:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:47,805 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:30:47,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:30:47,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212713058] [2024-10-13 16:30:47,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212713058] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:30:47,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178965640] [2024-10-13 16:30:47,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:30:47,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:30:47,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:30:47,809 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:30:47,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 16:30:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:30:47,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-10-13 16:30:47,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:30:48,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-10-13 16:30:48,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 41 [2024-10-13 16:30:48,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 46 [2024-10-13 16:30:48,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 81 [2024-10-13 16:30:48,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 147 [2024-10-13 16:30:49,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1044 treesize of output 887 [2024-10-13 16:30:58,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2393 treesize of output 2102 [2024-10-13 16:31:00,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4686 treesize of output 4146 [2024-10-13 16:31:01,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:01,123 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:31:02,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:02,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178965640] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:02,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 16:31:02,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10, 11] total 27 [2024-10-13 16:31:02,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131007356] [2024-10-13 16:31:02,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:31:02,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 16:31:02,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:31:02,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 16:31:02,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=603, Unknown=3, NotChecked=0, Total=756 [2024-10-13 16:31:02,276 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-10-13 16:31:02,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 91 transitions, 458 flow. Second operand has 12 states, 12 states have (on average 34.833333333333336) internal successors, (418), 12 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:02,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:31:02,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-10-13 16:31:02,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:31:03,825 INFO L124 PetriNetUnfolderBase]: 1748/3796 cut-off events. [2024-10-13 16:31:03,825 INFO L125 PetriNetUnfolderBase]: For 4778/4780 co-relation queries the response was YES. [2024-10-13 16:31:03,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10836 conditions, 3796 events. 1748/3796 cut-off events. For 4778/4780 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 22170 event pairs, 276 based on Foata normal form. 26/3796 useless extension candidates. Maximal degree in co-relation 10805. Up to 1300 conditions per place. [2024-10-13 16:31:03,846 INFO L140 encePairwiseOnDemand]: 66/83 looper letters, 130 selfloop transitions, 17 changer transitions 15/186 dead transitions. [2024-10-13 16:31:03,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 186 transitions, 1168 flow [2024-10-13 16:31:03,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 16:31:03,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 16:31:03,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 581 transitions. [2024-10-13 16:31:03,848 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 16:31:03,848 INFO L175 Difference]: Start difference. First operand has 128 places, 91 transitions, 458 flow. Second operand 14 states and 581 transitions. [2024-10-13 16:31:03,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 186 transitions, 1168 flow [2024-10-13 16:31:03,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 186 transitions, 1134 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-10-13 16:31:03,861 INFO L231 Difference]: Finished difference. Result has 127 places, 83 transitions, 392 flow [2024-10-13 16:31:03,907 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=392, PETRI_PLACES=127, PETRI_TRANSITIONS=83} [2024-10-13 16:31:03,908 INFO L277 CegarLoopForPetriNet]: 77 programPoint places, 50 predicate places. [2024-10-13 16:31:03,908 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 83 transitions, 392 flow [2024-10-13 16:31:03,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 34.833333333333336) internal successors, (418), 12 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:31:03,908 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:31:03,909 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:31:03,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 16:31:04,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:04,109 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2024-10-13 16:31:04,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:31:04,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1479141271, now seen corresponding path program 1 times [2024-10-13 16:31:04,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:31:04,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235252946] [2024-10-13 16:31:04,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:04,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:31:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:04,556 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:04,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:31:04,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235252946] [2024-10-13 16:31:04,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235252946] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:31:04,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239219015] [2024-10-13 16:31:04,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:31:04,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:31:04,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:31:04,559 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 16:31:04,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 16:31:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:31:04,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-10-13 16:31:04,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:31:04,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2024-10-13 16:31:04,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 59 [2024-10-13 16:31:04,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 123 [2024-10-13 16:31:05,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 170 [2024-10-13 16:31:05,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 358 treesize of output 319 [2024-10-13 16:31:05,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1394 treesize of output 1253 [2024-10-13 16:31:07,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3526 treesize of output 3153 [2024-10-13 16:31:17,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8087 treesize of output 7328 [2024-10-13 16:31:22,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15807 treesize of output 14374 [2024-10-13 16:31:31,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32773 treesize of output 28875 [2024-10-13 16:31:32,751 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:31:32,751 INFO L311 TraceCheckSpWp]: Computing backward predicates...