./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-15 00:04:26,225 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 00:04:26,308 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-15 00:04:26,315 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 00:04:26,317 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 00:04:26,356 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 00:04:26,356 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 00:04:26,357 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 00:04:26,358 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 00:04:26,359 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 00:04:26,359 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 00:04:26,360 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 00:04:26,360 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 00:04:26,363 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 00:04:26,363 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 00:04:26,364 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 00:04:26,364 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 00:04:26,364 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 00:04:26,365 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 00:04:26,365 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 00:04:26,365 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 00:04:26,369 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 00:04:26,370 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 00:04:26,370 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 00:04:26,370 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 00:04:26,371 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-15 00:04:26,371 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-15 00:04:26,371 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 00:04:26,371 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 00:04:26,372 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 00:04:26,373 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 00:04:26,373 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 00:04:26,373 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 00:04:26,373 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 00:04:26,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:04:26,374 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 00:04:26,374 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 00:04:26,374 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 00:04:26,374 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 00:04:26,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 00:04:26,375 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 00:04:26,375 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 00:04:26,375 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 00:04:26,376 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 00:04:26,376 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2024-10-15 00:04:26,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 00:04:26,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 00:04:26,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 00:04:26,706 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 00:04:26,707 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 00:04:26,709 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-10-15 00:04:28,362 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 00:04:28,577 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 00:04:28,577 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-10-15 00:04:28,586 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d6ac80d/82d30bf5f26a4d8d8632c383d974567d/FLAGa732fe57e [2024-10-15 00:04:28,936 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d6ac80d/82d30bf5f26a4d8d8632c383d974567d [2024-10-15 00:04:28,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 00:04:28,940 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 00:04:28,942 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 00:04:28,942 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 00:04:28,951 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 00:04:28,952 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:04:28" (1/1) ... [2024-10-15 00:04:28,953 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b5cce68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:28, skipping insertion in model container [2024-10-15 00:04:28,956 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:04:28" (1/1) ... [2024-10-15 00:04:28,987 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 00:04:29,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:04:29,243 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 00:04:29,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:04:29,307 INFO L204 MainTranslator]: Completed translation [2024-10-15 00:04:29,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:29 WrapperNode [2024-10-15 00:04:29,308 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 00:04:29,309 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 00:04:29,309 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 00:04:29,309 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 00:04:29,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:29" (1/1) ... [2024-10-15 00:04:29,327 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:29" (1/1) ... [2024-10-15 00:04:29,359 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 274 [2024-10-15 00:04:29,360 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 00:04:29,361 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 00:04:29,361 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 00:04:29,361 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 00:04:29,373 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:29" (1/1) ... [2024-10-15 00:04:29,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:29" (1/1) ... [2024-10-15 00:04:29,379 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:29" (1/1) ... [2024-10-15 00:04:29,406 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-15 00:04:29,407 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:29" (1/1) ... [2024-10-15 00:04:29,407 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:29" (1/1) ... [2024-10-15 00:04:29,423 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:29" (1/1) ... [2024-10-15 00:04:29,428 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:29" (1/1) ... [2024-10-15 00:04:29,436 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:29" (1/1) ... [2024-10-15 00:04:29,438 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:29" (1/1) ... [2024-10-15 00:04:29,447 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 00:04:29,449 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 00:04:29,450 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 00:04:29,450 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 00:04:29,451 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:29" (1/1) ... [2024-10-15 00:04:29,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:04:29,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:29,496 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-15 00:04:29,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-15 00:04:29,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 00:04:29,555 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-15 00:04:29,555 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-15 00:04:29,556 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-15 00:04:29,556 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-15 00:04:29,556 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-15 00:04:29,556 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-15 00:04:29,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 00:04:29,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-15 00:04:29,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-15 00:04:29,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-15 00:04:29,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-15 00:04:29,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-15 00:04:29,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-15 00:04:29,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 00:04:29,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 00:04:29,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-15 00:04:29,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-15 00:04:29,562 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-15 00:04:29,740 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 00:04:29,743 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 00:04:30,275 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-15 00:04:30,276 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 00:04:30,656 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 00:04:30,656 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-15 00:04:30,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:04:30 BoogieIcfgContainer [2024-10-15 00:04:30,658 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 00:04:30,660 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 00:04:30,661 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 00:04:30,665 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 00:04:30,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:04:28" (1/3) ... [2024-10-15 00:04:30,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573af3f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:04:30, skipping insertion in model container [2024-10-15 00:04:30,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:29" (2/3) ... [2024-10-15 00:04:30,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573af3f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:04:30, skipping insertion in model container [2024-10-15 00:04:30,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:04:30" (3/3) ... [2024-10-15 00:04:30,669 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2024-10-15 00:04:30,690 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 00:04:30,691 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-10-15 00:04:30,691 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-15 00:04:30,801 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-15 00:04:30,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 70 transitions, 161 flow [2024-10-15 00:04:30,890 INFO L124 PetriNetUnfolderBase]: 7/67 cut-off events. [2024-10-15 00:04:30,891 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-15 00:04:30,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 67 events. 7/67 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 209 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-10-15 00:04:30,898 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 70 transitions, 161 flow [2024-10-15 00:04:30,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 65 transitions, 145 flow [2024-10-15 00:04:30,909 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 00:04:30,916 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;@5e32740a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 00:04:30,916 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-10-15 00:04:30,920 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-15 00:04:30,920 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-15 00:04:30,920 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-15 00:04:30,920 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:30,923 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-15 00:04:30,924 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-15 00:04:30,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:30,930 INFO L85 PathProgramCache]: Analyzing trace with hash 807773, now seen corresponding path program 1 times [2024-10-15 00:04:30,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:30,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248690308] [2024-10-15 00:04:30,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:30,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:31,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:31,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:31,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248690308] [2024-10-15 00:04:31,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248690308] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:31,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:04:31,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:04:31,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789399499] [2024-10-15 00:04:31,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:31,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:04:31,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:31,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:04:31,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:04:31,377 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-10-15 00:04:31,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:31,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:31,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-10-15 00:04:31,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:32,223 INFO L124 PetriNetUnfolderBase]: 2450/4269 cut-off events. [2024-10-15 00:04:32,224 INFO L125 PetriNetUnfolderBase]: For 151/151 co-relation queries the response was YES. [2024-10-15 00:04:32,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7873 conditions, 4269 events. 2450/4269 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 28756 event pairs, 2170 based on Foata normal form. 287/3395 useless extension candidates. Maximal degree in co-relation 7490. Up to 3377 conditions per place. [2024-10-15 00:04:32,270 INFO L140 encePairwiseOnDemand]: 52/70 looper letters, 39 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-10-15 00:04:32,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 235 flow [2024-10-15 00:04:32,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:04:32,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:04:32,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-10-15 00:04:32,284 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5035714285714286 [2024-10-15 00:04:32,286 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 145 flow. Second operand 4 states and 141 transitions. [2024-10-15 00:04:32,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 235 flow [2024-10-15 00:04:32,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 64 transitions, 226 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-15 00:04:32,298 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 182 flow [2024-10-15 00:04:32,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-10-15 00:04:32,304 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2024-10-15 00:04:32,304 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 182 flow [2024-10-15 00:04:32,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:32,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:32,305 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-15 00:04:32,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 00:04:32,306 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-15 00:04:32,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:32,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1704600769, now seen corresponding path program 1 times [2024-10-15 00:04:32,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:32,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835600939] [2024-10-15 00:04:32,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:32,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:32,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:32,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:32,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835600939] [2024-10-15 00:04:32,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835600939] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:32,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480971569] [2024-10-15 00:04:32,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:32,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:32,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:32,508 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:04:32,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 00:04:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:32,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:04:32,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:32,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:32,687 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:04:32,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480971569] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:32,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:04:32,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-15 00:04:32,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254162943] [2024-10-15 00:04:32,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:32,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 00:04:32,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:32,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:04:32,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-15 00:04:32,726 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-10-15 00:04:32,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:32,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:32,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-10-15 00:04:32,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:33,318 INFO L124 PetriNetUnfolderBase]: 2450/4267 cut-off events. [2024-10-15 00:04:33,319 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-10-15 00:04:33,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7827 conditions, 4267 events. 2450/4267 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 28746 event pairs, 2170 based on Foata normal form. 2/3111 useless extension candidates. Maximal degree in co-relation 7777. Up to 3367 conditions per place. [2024-10-15 00:04:33,422 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 32 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2024-10-15 00:04:33,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 62 transitions, 262 flow [2024-10-15 00:04:33,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:04:33,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-15 00:04:33,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 172 transitions. [2024-10-15 00:04:33,426 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-10-15 00:04:33,426 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 182 flow. Second operand 6 states and 172 transitions. [2024-10-15 00:04:33,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 62 transitions, 262 flow [2024-10-15 00:04:33,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 62 transitions, 262 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-15 00:04:33,430 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 198 flow [2024-10-15 00:04:33,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-10-15 00:04:33,431 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2024-10-15 00:04:33,432 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 198 flow [2024-10-15 00:04:33,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:33,432 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:33,432 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-15 00:04:33,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-15 00:04:33,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:33,634 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-15 00:04:33,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:33,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1303015442, now seen corresponding path program 1 times [2024-10-15 00:04:33,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:33,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931784814] [2024-10-15 00:04:33,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:33,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:33,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:33,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:33,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931784814] [2024-10-15 00:04:33,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931784814] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:33,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627400733] [2024-10-15 00:04:33,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:33,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:33,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:33,764 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:04:33,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 00:04:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:33,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:04:33,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:33,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:33,878 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:04:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:33,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627400733] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:04:33,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:04:33,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-15 00:04:33,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737348835] [2024-10-15 00:04:33,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:04:33,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 00:04:33,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:33,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 00:04:33,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-15 00:04:33,951 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-10-15 00:04:33,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 198 flow. Second operand has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:33,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:33,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-10-15 00:04:33,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:34,545 INFO L124 PetriNetUnfolderBase]: 2456/4291 cut-off events. [2024-10-15 00:04:34,545 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-10-15 00:04:34,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7921 conditions, 4291 events. 2456/4291 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 28994 event pairs, 2170 based on Foata normal form. 6/3138 useless extension candidates. Maximal degree in co-relation 7779. Up to 3378 conditions per place. [2024-10-15 00:04:34,593 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 37 selfloop transitions, 25 changer transitions 0/80 dead transitions. [2024-10-15 00:04:34,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 80 transitions, 436 flow [2024-10-15 00:04:34,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:04:34,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:04:34,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 278 transitions. [2024-10-15 00:04:34,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39714285714285713 [2024-10-15 00:04:34,598 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 198 flow. Second operand 10 states and 278 transitions. [2024-10-15 00:04:34,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 80 transitions, 436 flow [2024-10-15 00:04:34,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 80 transitions, 378 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-10-15 00:04:34,603 INFO L231 Difference]: Finished difference. Result has 74 places, 80 transitions, 338 flow [2024-10-15 00:04:34,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=338, PETRI_PLACES=74, PETRI_TRANSITIONS=80} [2024-10-15 00:04:34,606 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 6 predicate places. [2024-10-15 00:04:34,607 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 80 transitions, 338 flow [2024-10-15 00:04:34,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 22.083333333333332) internal successors, (265), 12 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:34,608 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:34,608 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:34,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 00:04:34,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-15 00:04:34,814 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-15 00:04:34,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:34,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1274722415, now seen corresponding path program 1 times [2024-10-15 00:04:34,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:34,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667111972] [2024-10-15 00:04:34,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:34,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:34,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:34,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:34,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667111972] [2024-10-15 00:04:34,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667111972] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:34,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:04:34,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:04:34,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92741777] [2024-10-15 00:04:34,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:34,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:04:34,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:34,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:04:34,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:04:34,962 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2024-10-15 00:04:34,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 80 transitions, 338 flow. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:34,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:34,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2024-10-15 00:04:34,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:35,543 INFO L124 PetriNetUnfolderBase]: 2593/4569 cut-off events. [2024-10-15 00:04:35,543 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-10-15 00:04:35,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8495 conditions, 4569 events. 2593/4569 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 30790 event pairs, 2297 based on Foata normal form. 98/3549 useless extension candidates. Maximal degree in co-relation 8399. Up to 3393 conditions per place. [2024-10-15 00:04:35,601 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 85 selfloop transitions, 3 changer transitions 1/109 dead transitions. [2024-10-15 00:04:35,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 109 transitions, 651 flow [2024-10-15 00:04:35,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:04:35,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:04:35,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2024-10-15 00:04:35,603 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5785714285714286 [2024-10-15 00:04:35,603 INFO L175 Difference]: Start difference. First operand has 74 places, 80 transitions, 338 flow. Second operand 4 states and 162 transitions. [2024-10-15 00:04:35,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 109 transitions, 651 flow [2024-10-15 00:04:35,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 109 transitions, 617 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-15 00:04:35,610 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 333 flow [2024-10-15 00:04:35,611 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=333, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2024-10-15 00:04:35,613 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 8 predicate places. [2024-10-15 00:04:35,613 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 333 flow [2024-10-15 00:04:35,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:35,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:35,614 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:35,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-15 00:04:35,614 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-15 00:04:35,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:35,615 INFO L85 PathProgramCache]: Analyzing trace with hash -189526413, now seen corresponding path program 1 times [2024-10-15 00:04:35,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:35,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481115122] [2024-10-15 00:04:35,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:35,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:35,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:35,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:35,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:35,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481115122] [2024-10-15 00:04:35,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481115122] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:35,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194502253] [2024-10-15 00:04:35,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:35,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:35,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:35,781 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:04:35,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 00:04:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:35,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:04:35,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:35,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:04:35,907 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:04:35,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194502253] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:35,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:04:35,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-15 00:04:35,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087585454] [2024-10-15 00:04:35,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:35,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:04:35,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:35,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:04:35,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-15 00:04:35,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2024-10-15 00:04:35,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 333 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:35,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:35,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2024-10-15 00:04:35,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:36,236 INFO L124 PetriNetUnfolderBase]: 1818/3329 cut-off events. [2024-10-15 00:04:36,237 INFO L125 PetriNetUnfolderBase]: For 386/386 co-relation queries the response was YES. [2024-10-15 00:04:36,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6444 conditions, 3329 events. 1818/3329 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 21655 event pairs, 1588 based on Foata normal form. 0/2749 useless extension candidates. Maximal degree in co-relation 6350. Up to 2572 conditions per place. [2024-10-15 00:04:36,264 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 56 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2024-10-15 00:04:36,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 77 transitions, 435 flow [2024-10-15 00:04:36,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:04:36,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:04:36,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-10-15 00:04:36,265 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-10-15 00:04:36,265 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 333 flow. Second operand 3 states and 111 transitions. [2024-10-15 00:04:36,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 77 transitions, 435 flow [2024-10-15 00:04:36,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 77 transitions, 431 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-15 00:04:36,269 INFO L231 Difference]: Finished difference. Result has 74 places, 77 transitions, 319 flow [2024-10-15 00:04:36,269 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=319, PETRI_PLACES=74, PETRI_TRANSITIONS=77} [2024-10-15 00:04:36,270 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 6 predicate places. [2024-10-15 00:04:36,270 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 77 transitions, 319 flow [2024-10-15 00:04:36,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:36,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:36,270 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:36,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-15 00:04:36,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:36,475 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-15 00:04:36,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:36,476 INFO L85 PathProgramCache]: Analyzing trace with hash 2068854914, now seen corresponding path program 1 times [2024-10-15 00:04:36,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:36,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232842292] [2024-10-15 00:04:36,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:36,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:36,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:36,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:36,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232842292] [2024-10-15 00:04:36,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232842292] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:36,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:04:36,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-15 00:04:36,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564418420] [2024-10-15 00:04:36,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:36,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:04:36,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:36,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:04:36,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:04:36,539 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2024-10-15 00:04:36,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 77 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:36,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:36,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2024-10-15 00:04:36,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:36,839 INFO L124 PetriNetUnfolderBase]: 1664/3063 cut-off events. [2024-10-15 00:04:36,839 INFO L125 PetriNetUnfolderBase]: For 431/431 co-relation queries the response was YES. [2024-10-15 00:04:36,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6063 conditions, 3063 events. 1664/3063 cut-off events. For 431/431 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 18782 event pairs, 584 based on Foata normal form. 54/2642 useless extension candidates. Maximal degree in co-relation 6048. Up to 1751 conditions per place. [2024-10-15 00:04:36,863 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 70 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2024-10-15 00:04:36,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 92 transitions, 502 flow [2024-10-15 00:04:36,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:04:36,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:04:36,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2024-10-15 00:04:36,865 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-10-15 00:04:36,865 INFO L175 Difference]: Start difference. First operand has 74 places, 77 transitions, 319 flow. Second operand 3 states and 125 transitions. [2024-10-15 00:04:36,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 92 transitions, 502 flow [2024-10-15 00:04:36,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 92 transitions, 493 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:04:36,869 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 324 flow [2024-10-15 00:04:36,870 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=324, PETRI_PLACES=75, PETRI_TRANSITIONS=78} [2024-10-15 00:04:36,870 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2024-10-15 00:04:36,870 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 324 flow [2024-10-15 00:04:36,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:36,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:36,871 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:36,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-15 00:04:36,871 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-15 00:04:36,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:36,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1746229002, now seen corresponding path program 1 times [2024-10-15 00:04:36,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:36,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605556202] [2024-10-15 00:04:36,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:36,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:36,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:36,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:04:36,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:36,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605556202] [2024-10-15 00:04:36,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605556202] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:36,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:04:36,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:04:36,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11518239] [2024-10-15 00:04:36,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:36,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:04:36,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:36,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:04:36,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:04:36,953 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-10-15 00:04:36,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 78 transitions, 324 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:36,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:36,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-10-15 00:04:36,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:37,493 INFO L124 PetriNetUnfolderBase]: 2845/5014 cut-off events. [2024-10-15 00:04:37,493 INFO L125 PetriNetUnfolderBase]: For 884/884 co-relation queries the response was YES. [2024-10-15 00:04:37,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10502 conditions, 5014 events. 2845/5014 cut-off events. For 884/884 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 32143 event pairs, 1762 based on Foata normal form. 96/4604 useless extension candidates. Maximal degree in co-relation 10486. Up to 3069 conditions per place. [2024-10-15 00:04:37,543 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 94 selfloop transitions, 4 changer transitions 0/116 dead transitions. [2024-10-15 00:04:37,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 116 transitions, 626 flow [2024-10-15 00:04:37,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:04:37,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:04:37,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 165 transitions. [2024-10-15 00:04:37,545 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-10-15 00:04:37,546 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 324 flow. Second operand 4 states and 165 transitions. [2024-10-15 00:04:37,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 116 transitions, 626 flow [2024-10-15 00:04:37,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 116 transitions, 622 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:04:37,551 INFO L231 Difference]: Finished difference. Result has 79 places, 81 transitions, 351 flow [2024-10-15 00:04:37,551 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=351, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2024-10-15 00:04:37,552 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 11 predicate places. [2024-10-15 00:04:37,552 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 351 flow [2024-10-15 00:04:37,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:37,552 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:37,553 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:37,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-15 00:04:37,553 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-15 00:04:37,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:37,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1200309641, now seen corresponding path program 1 times [2024-10-15 00:04:37,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:37,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867092954] [2024-10-15 00:04:37,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:37,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:37,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:04:37,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:37,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867092954] [2024-10-15 00:04:37,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867092954] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:37,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:04:37,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:04:37,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482671507] [2024-10-15 00:04:37,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:37,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:04:37,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:37,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:04:37,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:04:37,625 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2024-10-15 00:04:37,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 351 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:37,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:37,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2024-10-15 00:04:37,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:38,027 INFO L124 PetriNetUnfolderBase]: 1973/3727 cut-off events. [2024-10-15 00:04:38,027 INFO L125 PetriNetUnfolderBase]: For 1305/1365 co-relation queries the response was YES. [2024-10-15 00:04:38,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8438 conditions, 3727 events. 1973/3727 cut-off events. For 1305/1365 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 23908 event pairs, 896 based on Foata normal form. 15/3376 useless extension candidates. Maximal degree in co-relation 8420. Up to 2593 conditions per place. [2024-10-15 00:04:38,062 INFO L140 encePairwiseOnDemand]: 66/70 looper letters, 67 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2024-10-15 00:04:38,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 90 transitions, 516 flow [2024-10-15 00:04:38,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:04:38,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:04:38,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-10-15 00:04:38,064 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-10-15 00:04:38,064 INFO L175 Difference]: Start difference. First operand has 79 places, 81 transitions, 351 flow. Second operand 3 states and 119 transitions. [2024-10-15 00:04:38,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 90 transitions, 516 flow [2024-10-15 00:04:38,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 90 transitions, 513 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:04:38,069 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 371 flow [2024-10-15 00:04:38,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=371, PETRI_PLACES=81, PETRI_TRANSITIONS=83} [2024-10-15 00:04:38,073 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 13 predicate places. [2024-10-15 00:04:38,074 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 371 flow [2024-10-15 00:04:38,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:38,074 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:38,074 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:38,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-15 00:04:38,075 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-15 00:04:38,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:38,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1714169520, now seen corresponding path program 1 times [2024-10-15 00:04:38,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:38,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904328440] [2024-10-15 00:04:38,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:38,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:38,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:04:38,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:38,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904328440] [2024-10-15 00:04:38,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904328440] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:38,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:04:38,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:04:38,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235774688] [2024-10-15 00:04:38,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:38,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:04:38,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:38,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:04:38,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:04:38,194 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2024-10-15 00:04:38,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:38,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:38,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2024-10-15 00:04:38,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:38,685 INFO L124 PetriNetUnfolderBase]: 2356/4430 cut-off events. [2024-10-15 00:04:38,685 INFO L125 PetriNetUnfolderBase]: For 2443/2583 co-relation queries the response was YES. [2024-10-15 00:04:38,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10566 conditions, 4430 events. 2356/4430 cut-off events. For 2443/2583 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 28146 event pairs, 1909 based on Foata normal form. 100/4169 useless extension candidates. Maximal degree in co-relation 10546. Up to 2808 conditions per place. [2024-10-15 00:04:38,725 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 72 selfloop transitions, 7 changer transitions 6/105 dead transitions. [2024-10-15 00:04:38,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 105 transitions, 628 flow [2024-10-15 00:04:38,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:04:38,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:04:38,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 155 transitions. [2024-10-15 00:04:38,727 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-10-15 00:04:38,727 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 371 flow. Second operand 4 states and 155 transitions. [2024-10-15 00:04:38,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 105 transitions, 628 flow [2024-10-15 00:04:38,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 105 transitions, 611 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-15 00:04:38,735 INFO L231 Difference]: Finished difference. Result has 84 places, 83 transitions, 381 flow [2024-10-15 00:04:38,736 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=381, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2024-10-15 00:04:38,737 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 16 predicate places. [2024-10-15 00:04:38,738 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 381 flow [2024-10-15 00:04:38,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:38,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:38,738 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-15 00:04:38,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-15 00:04:38,739 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-15 00:04:38,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:38,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1900093968, now seen corresponding path program 2 times [2024-10-15 00:04:38,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:38,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955913733] [2024-10-15 00:04:38,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:38,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:38,911 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:38,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:38,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955913733] [2024-10-15 00:04:38,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955913733] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:38,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343618466] [2024-10-15 00:04:38,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:04:38,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:38,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:38,915 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:04:38,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 00:04:38,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:04:38,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:04:38,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 00:04:38,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:39,052 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:04:39,052 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:04:39,088 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:04:39,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343618466] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:04:39,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:04:39,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-15 00:04:39,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467787871] [2024-10-15 00:04:39,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:04:39,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-15 00:04:39,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:39,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-15 00:04:39,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-15 00:04:39,120 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-10-15 00:04:39,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 381 flow. Second operand has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:39,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:39,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-10-15 00:04:39,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:39,899 INFO L124 PetriNetUnfolderBase]: 2359/4453 cut-off events. [2024-10-15 00:04:39,900 INFO L125 PetriNetUnfolderBase]: For 1873/2013 co-relation queries the response was YES. [2024-10-15 00:04:39,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10337 conditions, 4453 events. 2359/4453 cut-off events. For 1873/2013 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 28520 event pairs, 1909 based on Foata normal form. 4/4093 useless extension candidates. Maximal degree in co-relation 10316. Up to 3426 conditions per place. [2024-10-15 00:04:39,941 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 36 selfloop transitions, 34 changer transitions 0/88 dead transitions. [2024-10-15 00:04:39,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 88 transitions, 551 flow [2024-10-15 00:04:39,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-15 00:04:39,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-15 00:04:39,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 571 transitions. [2024-10-15 00:04:39,944 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3398809523809524 [2024-10-15 00:04:39,944 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 381 flow. Second operand 24 states and 571 transitions. [2024-10-15 00:04:39,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 88 transitions, 551 flow [2024-10-15 00:04:39,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 88 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:04:39,952 INFO L231 Difference]: Finished difference. Result has 107 places, 88 transitions, 485 flow [2024-10-15 00:04:39,953 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=485, PETRI_PLACES=107, PETRI_TRANSITIONS=88} [2024-10-15 00:04:39,954 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 39 predicate places. [2024-10-15 00:04:39,954 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 88 transitions, 485 flow [2024-10-15 00:04:39,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:39,955 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:39,955 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:39,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-15 00:04:40,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:40,160 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-15 00:04:40,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:40,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1297551664, now seen corresponding path program 1 times [2024-10-15 00:04:40,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:40,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051330908] [2024-10-15 00:04:40,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:40,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:40,369 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:40,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:40,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051330908] [2024-10-15 00:04:40,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051330908] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:40,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224980682] [2024-10-15 00:04:40,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:40,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:40,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:40,373 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:04:40,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 00:04:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:40,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-15 00:04:40,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:40,589 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:40,589 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:04:40,726 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:40,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224980682] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:04:40,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:04:40,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-15 00:04:40,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513855275] [2024-10-15 00:04:40,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:04:40,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-15 00:04:40,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:40,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-15 00:04:40,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-10-15 00:04:40,783 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-10-15 00:04:40,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 88 transitions, 485 flow. Second operand has 15 states, 15 states have (on average 22.866666666666667) internal successors, (343), 15 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:40,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:40,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-10-15 00:04:40,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:41,768 INFO L124 PetriNetUnfolderBase]: 3877/7370 cut-off events. [2024-10-15 00:04:41,769 INFO L125 PetriNetUnfolderBase]: For 3321/3461 co-relation queries the response was YES. [2024-10-15 00:04:41,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17089 conditions, 7370 events. 3877/7370 cut-off events. For 3321/3461 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 53088 event pairs, 2603 based on Foata normal form. 232/6969 useless extension candidates. Maximal degree in co-relation 17065. Up to 3249 conditions per place. [2024-10-15 00:04:41,835 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 105 selfloop transitions, 31 changer transitions 17/171 dead transitions. [2024-10-15 00:04:41,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 171 transitions, 1266 flow [2024-10-15 00:04:41,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-15 00:04:41,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-15 00:04:41,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 352 transitions. [2024-10-15 00:04:41,837 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-10-15 00:04:41,838 INFO L175 Difference]: Start difference. First operand has 107 places, 88 transitions, 485 flow. Second operand 12 states and 352 transitions. [2024-10-15 00:04:41,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 171 transitions, 1266 flow [2024-10-15 00:04:41,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 171 transitions, 1096 flow, removed 18 selfloop flow, removed 12 redundant places. [2024-10-15 00:04:41,848 INFO L231 Difference]: Finished difference. Result has 112 places, 105 transitions, 651 flow [2024-10-15 00:04:41,849 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=651, PETRI_PLACES=112, PETRI_TRANSITIONS=105} [2024-10-15 00:04:41,849 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 44 predicate places. [2024-10-15 00:04:41,850 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 105 transitions, 651 flow [2024-10-15 00:04:41,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 22.866666666666667) internal successors, (343), 15 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:41,850 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:41,850 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:41,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-15 00:04:42,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-15 00:04:42,055 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-15 00:04:42,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:42,056 INFO L85 PathProgramCache]: Analyzing trace with hash -932144561, now seen corresponding path program 1 times [2024-10-15 00:04:42,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:42,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939260921] [2024-10-15 00:04:42,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:42,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:42,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:04:42,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:42,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939260921] [2024-10-15 00:04:42,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939260921] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:42,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752021412] [2024-10-15 00:04:42,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:42,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:42,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:42,176 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:04:42,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 00:04:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:42,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:04:42,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:42,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-15 00:04:42,304 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:04:42,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752021412] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:42,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:04:42,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-10-15 00:04:42,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347159056] [2024-10-15 00:04:42,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:42,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:04:42,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:42,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:04:42,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-15 00:04:42,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 70 [2024-10-15 00:04:42,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 105 transitions, 651 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:42,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:42,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 70 [2024-10-15 00:04:42,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:42,860 INFO L124 PetriNetUnfolderBase]: 2913/5811 cut-off events. [2024-10-15 00:04:42,861 INFO L125 PetriNetUnfolderBase]: For 3634/3718 co-relation queries the response was YES. [2024-10-15 00:04:42,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13497 conditions, 5811 events. 2913/5811 cut-off events. For 3634/3718 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 42516 event pairs, 2421 based on Foata normal form. 266/5633 useless extension candidates. Maximal degree in co-relation 13469. Up to 4362 conditions per place. [2024-10-15 00:04:42,927 INFO L140 encePairwiseOnDemand]: 67/70 looper letters, 83 selfloop transitions, 1 changer transitions 0/103 dead transitions. [2024-10-15 00:04:42,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 103 transitions, 811 flow [2024-10-15 00:04:42,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:04:42,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:04:42,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-10-15 00:04:42,929 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-10-15 00:04:42,929 INFO L175 Difference]: Start difference. First operand has 112 places, 105 transitions, 651 flow. Second operand 3 states and 108 transitions. [2024-10-15 00:04:42,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 103 transitions, 811 flow [2024-10-15 00:04:42,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 103 transitions, 799 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-15 00:04:42,939 INFO L231 Difference]: Finished difference. Result has 109 places, 103 transitions, 633 flow [2024-10-15 00:04:42,940 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=633, PETRI_PLACES=109, PETRI_TRANSITIONS=103} [2024-10-15 00:04:42,941 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 41 predicate places. [2024-10-15 00:04:42,941 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 103 transitions, 633 flow [2024-10-15 00:04:42,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:42,942 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:42,942 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:42,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-15 00:04:43,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:43,146 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-15 00:04:43,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:43,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1621894546, now seen corresponding path program 2 times [2024-10-15 00:04:43,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:43,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263177199] [2024-10-15 00:04:43,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:43,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:43,224 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:04:43,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:43,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263177199] [2024-10-15 00:04:43,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263177199] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:43,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118102026] [2024-10-15 00:04:43,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:04:43,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:43,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:43,227 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:04:43,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-15 00:04:43,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 00:04:43,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:04:43,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:04:43,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:43,377 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:04:43,378 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:04:43,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118102026] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:04:43,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:04:43,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-15 00:04:43,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994762572] [2024-10-15 00:04:43,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:04:43,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 00:04:43,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:43,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:04:43,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-15 00:04:43,387 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 70 [2024-10-15 00:04:43,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 103 transitions, 633 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:43,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:43,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 70 [2024-10-15 00:04:43,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:44,112 INFO L124 PetriNetUnfolderBase]: 3599/6531 cut-off events. [2024-10-15 00:04:44,112 INFO L125 PetriNetUnfolderBase]: For 3050/3050 co-relation queries the response was YES. [2024-10-15 00:04:44,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15544 conditions, 6531 events. 3599/6531 cut-off events. For 3050/3050 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 44691 event pairs, 1251 based on Foata normal form. 88/6177 useless extension candidates. Maximal degree in co-relation 15515. Up to 2097 conditions per place. [2024-10-15 00:04:44,176 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 109 selfloop transitions, 7 changer transitions 0/132 dead transitions. [2024-10-15 00:04:44,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 132 transitions, 947 flow [2024-10-15 00:04:44,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:04:44,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:04:44,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 150 transitions. [2024-10-15 00:04:44,178 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-10-15 00:04:44,178 INFO L175 Difference]: Start difference. First operand has 109 places, 103 transitions, 633 flow. Second operand 4 states and 150 transitions. [2024-10-15 00:04:44,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 132 transitions, 947 flow [2024-10-15 00:04:44,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 132 transitions, 946 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:04:44,190 INFO L231 Difference]: Finished difference. Result has 110 places, 102 transitions, 642 flow [2024-10-15 00:04:44,191 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=642, PETRI_PLACES=110, PETRI_TRANSITIONS=102} [2024-10-15 00:04:44,191 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 42 predicate places. [2024-10-15 00:04:44,191 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 102 transitions, 642 flow [2024-10-15 00:04:44,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:44,192 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:44,192 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1] [2024-10-15 00:04:44,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-15 00:04:44,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:44,394 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-15 00:04:44,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:44,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1255992720, now seen corresponding path program 1 times [2024-10-15 00:04:44,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:44,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92991301] [2024-10-15 00:04:44,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:44,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:44,630 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:44,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:44,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92991301] [2024-10-15 00:04:44,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92991301] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:44,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050762760] [2024-10-15 00:04:44,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:44,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:44,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:44,634 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:04:44,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-15 00:04:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:44,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-15 00:04:44,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:44,794 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:44,795 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:04:45,020 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:04:45,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050762760] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:04:45,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:04:45,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-10-15 00:04:45,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772256498] [2024-10-15 00:04:45,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:04:45,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-15 00:04:45,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:45,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-15 00:04:45,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-10-15 00:04:45,076 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2024-10-15 00:04:45,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 102 transitions, 642 flow. Second operand has 28 states, 28 states have (on average 22.071428571428573) internal successors, (618), 28 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:45,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:45,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2024-10-15 00:04:45,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:46,029 INFO L124 PetriNetUnfolderBase]: 2941/5883 cut-off events. [2024-10-15 00:04:46,029 INFO L125 PetriNetUnfolderBase]: For 5823/5865 co-relation queries the response was YES. [2024-10-15 00:04:46,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14704 conditions, 5883 events. 2941/5883 cut-off events. For 5823/5865 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 43024 event pairs, 2421 based on Foata normal form. 21/5460 useless extension candidates. Maximal degree in co-relation 14675. Up to 4344 conditions per place. [2024-10-15 00:04:46,078 INFO L140 encePairwiseOnDemand]: 62/70 looper letters, 41 selfloop transitions, 100 changer transitions 0/158 dead transitions. [2024-10-15 00:04:46,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 158 transitions, 1470 flow [2024-10-15 00:04:46,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-15 00:04:46,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-15 00:04:46,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 657 transitions. [2024-10-15 00:04:46,082 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.360989010989011 [2024-10-15 00:04:46,082 INFO L175 Difference]: Start difference. First operand has 110 places, 102 transitions, 642 flow. Second operand 26 states and 657 transitions. [2024-10-15 00:04:46,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 158 transitions, 1470 flow [2024-10-15 00:04:46,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 158 transitions, 1456 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-15 00:04:46,099 INFO L231 Difference]: Finished difference. Result has 139 places, 158 transitions, 1444 flow [2024-10-15 00:04:46,099 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1444, PETRI_PLACES=139, PETRI_TRANSITIONS=158} [2024-10-15 00:04:46,100 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 71 predicate places. [2024-10-15 00:04:46,100 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 158 transitions, 1444 flow [2024-10-15 00:04:46,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 22.071428571428573) internal successors, (618), 28 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:46,101 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:46,101 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] [2024-10-15 00:04:46,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-15 00:04:46,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-15 00:04:46,306 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-15 00:04:46,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:46,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1829192684, now seen corresponding path program 1 times [2024-10-15 00:04:46,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:46,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823057447] [2024-10-15 00:04:46,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:46,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:46,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:04:46,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:46,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823057447] [2024-10-15 00:04:46,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823057447] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:46,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717062984] [2024-10-15 00:04:46,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:46,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:46,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:46,872 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:04:46,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-15 00:04:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:46,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-15 00:04:46,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:47,033 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 23 treesize of output 1 [2024-10-15 00:04:47,349 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-15 00:04:47,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-10-15 00:04:47,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:04:47,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:04:47,719 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 20 treesize of output 18 [2024-10-15 00:04:47,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-10-15 00:04:47,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:04:47,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717062984] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:04:47,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:04:47,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-10-15 00:04:47,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894162435] [2024-10-15 00:04:47,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:04:47,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-15 00:04:47,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:47,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-15 00:04:47,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2024-10-15 00:04:48,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 70 [2024-10-15 00:04:48,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 158 transitions, 1444 flow. Second operand has 21 states, 21 states have (on average 19.142857142857142) internal successors, (402), 21 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:48,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:48,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 70 [2024-10-15 00:04:48,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:52,374 INFO L124 PetriNetUnfolderBase]: 15047/25831 cut-off events. [2024-10-15 00:04:52,375 INFO L125 PetriNetUnfolderBase]: For 13564/13828 co-relation queries the response was YES. [2024-10-15 00:04:52,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60885 conditions, 25831 events. 15047/25831 cut-off events. For 13564/13828 co-relation queries the response was YES. Maximal size of possible extension queue 1056. Compared 209027 event pairs, 6374 based on Foata normal form. 0/23385 useless extension candidates. Maximal degree in co-relation 60848. Up to 4521 conditions per place. [2024-10-15 00:04:52,781 INFO L140 encePairwiseOnDemand]: 58/70 looper letters, 270 selfloop transitions, 110 changer transitions 8/401 dead transitions. [2024-10-15 00:04:52,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 401 transitions, 3150 flow [2024-10-15 00:04:52,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-15 00:04:52,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-15 00:04:52,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 548 transitions. [2024-10-15 00:04:52,786 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43492063492063493 [2024-10-15 00:04:52,786 INFO L175 Difference]: Start difference. First operand has 139 places, 158 transitions, 1444 flow. Second operand 18 states and 548 transitions. [2024-10-15 00:04:52,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 401 transitions, 3150 flow [2024-10-15 00:04:52,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 401 transitions, 2859 flow, removed 92 selfloop flow, removed 12 redundant places. [2024-10-15 00:04:52,828 INFO L231 Difference]: Finished difference. Result has 149 places, 173 transitions, 1457 flow [2024-10-15 00:04:52,829 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1457, PETRI_PLACES=149, PETRI_TRANSITIONS=173} [2024-10-15 00:04:52,830 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 81 predicate places. [2024-10-15 00:04:52,830 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 173 transitions, 1457 flow [2024-10-15 00:04:52,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 19.142857142857142) internal successors, (402), 21 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:52,830 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:52,830 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:04:52,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-15 00:04:53,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-15 00:04:53,031 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-15 00:04:53,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:53,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1260875763, now seen corresponding path program 1 times [2024-10-15 00:04:53,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:53,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394629837] [2024-10-15 00:04:53,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:53,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:53,133 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:04:53,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:53,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394629837] [2024-10-15 00:04:53,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394629837] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:53,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256126507] [2024-10-15 00:04:53,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:53,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:53,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:53,136 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:04:53,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-15 00:04:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:53,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:04:53,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:04:53,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:04:53,307 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:04:53,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256126507] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:04:53,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:04:53,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-15 00:04:53,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668304538] [2024-10-15 00:04:53,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:04:53,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 00:04:53,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:53,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 00:04:53,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-15 00:04:53,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 70 [2024-10-15 00:04:53,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 173 transitions, 1457 flow. Second operand has 12 states, 12 states have (on average 25.0) internal successors, (300), 12 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:53,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:53,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 70 [2024-10-15 00:04:53,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:04:57,086 INFO L124 PetriNetUnfolderBase]: 15319/28757 cut-off events. [2024-10-15 00:04:57,087 INFO L125 PetriNetUnfolderBase]: For 27940/28384 co-relation queries the response was YES. [2024-10-15 00:04:57,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74756 conditions, 28757 events. 15319/28757 cut-off events. For 27940/28384 co-relation queries the response was YES. Maximal size of possible extension queue 847. Compared 248194 event pairs, 4660 based on Foata normal form. 0/27473 useless extension candidates. Maximal degree in co-relation 74716. Up to 10594 conditions per place. [2024-10-15 00:04:57,422 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 359 selfloop transitions, 13 changer transitions 0/393 dead transitions. [2024-10-15 00:04:57,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 393 transitions, 3303 flow [2024-10-15 00:04:57,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:04:57,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:04:57,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 393 transitions. [2024-10-15 00:04:57,425 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5614285714285714 [2024-10-15 00:04:57,425 INFO L175 Difference]: Start difference. First operand has 149 places, 173 transitions, 1457 flow. Second operand 10 states and 393 transitions. [2024-10-15 00:04:57,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 393 transitions, 3303 flow [2024-10-15 00:04:57,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 393 transitions, 3214 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-10-15 00:04:57,561 INFO L231 Difference]: Finished difference. Result has 156 places, 182 transitions, 1496 flow [2024-10-15 00:04:57,561 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1496, PETRI_PLACES=156, PETRI_TRANSITIONS=182} [2024-10-15 00:04:57,562 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 88 predicate places. [2024-10-15 00:04:57,562 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 182 transitions, 1496 flow [2024-10-15 00:04:57,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 25.0) internal successors, (300), 12 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:57,563 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:04:57,563 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] [2024-10-15 00:04:57,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-15 00:04:57,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-15 00:04:57,764 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-15 00:04:57,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:04:57,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1400375729, now seen corresponding path program 1 times [2024-10-15 00:04:57,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:04:57,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453270466] [2024-10-15 00:04:57,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:57,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:04:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:58,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:04:58,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:04:58,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453270466] [2024-10-15 00:04:58,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453270466] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:04:58,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15974274] [2024-10-15 00:04:58,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:04:58,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:04:58,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:04:58,326 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:04:58,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-15 00:04:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:04:58,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-15 00:04:58,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:04:58,458 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 23 treesize of output 1 [2024-10-15 00:04:58,705 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-15 00:04:58,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-10-15 00:04:58,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:04:58,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:04:59,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-15 00:04:59,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-10-15 00:04:59,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:04:59,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15974274] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:04:59,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:04:59,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-10-15 00:04:59,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935307220] [2024-10-15 00:04:59,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:04:59,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-15 00:04:59,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:04:59,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-15 00:04:59,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2024-10-15 00:04:59,470 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 70 [2024-10-15 00:04:59,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 182 transitions, 1496 flow. Second operand has 21 states, 21 states have (on average 20.142857142857142) internal successors, (423), 21 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:04:59,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:04:59,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 70 [2024-10-15 00:04:59,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:04,926 INFO L124 PetriNetUnfolderBase]: 20962/36567 cut-off events. [2024-10-15 00:05:04,926 INFO L125 PetriNetUnfolderBase]: For 47721/48095 co-relation queries the response was YES. [2024-10-15 00:05:05,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105013 conditions, 36567 events. 20962/36567 cut-off events. For 47721/48095 co-relation queries the response was YES. Maximal size of possible extension queue 1033. Compared 302685 event pairs, 10028 based on Foata normal form. 572/36096 useless extension candidates. Maximal degree in co-relation 104970. Up to 7425 conditions per place. [2024-10-15 00:05:05,401 INFO L140 encePairwiseOnDemand]: 58/70 looper letters, 370 selfloop transitions, 108 changer transitions 11/507 dead transitions. [2024-10-15 00:05:05,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 507 transitions, 4176 flow [2024-10-15 00:05:05,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-15 00:05:05,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-15 00:05:05,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 559 transitions. [2024-10-15 00:05:05,403 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44365079365079363 [2024-10-15 00:05:05,403 INFO L175 Difference]: Start difference. First operand has 156 places, 182 transitions, 1496 flow. Second operand 18 states and 559 transitions. [2024-10-15 00:05:05,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 507 transitions, 4176 flow [2024-10-15 00:05:05,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 507 transitions, 3840 flow, removed 132 selfloop flow, removed 3 redundant places. [2024-10-15 00:05:05,841 INFO L231 Difference]: Finished difference. Result has 172 places, 184 transitions, 1703 flow [2024-10-15 00:05:05,841 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1703, PETRI_PLACES=172, PETRI_TRANSITIONS=184} [2024-10-15 00:05:05,842 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 104 predicate places. [2024-10-15 00:05:05,842 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 184 transitions, 1703 flow [2024-10-15 00:05:05,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 20.142857142857142) internal successors, (423), 21 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:05,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:05,842 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] [2024-10-15 00:05:05,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-15 00:05:06,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-15 00:05:06,043 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-15 00:05:06,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:06,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1403960753, now seen corresponding path program 1 times [2024-10-15 00:05:06,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:06,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615938040] [2024-10-15 00:05:06,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:06,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:06,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:05:06,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:06,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615938040] [2024-10-15 00:05:06,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615938040] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:05:06,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571287060] [2024-10-15 00:05:06,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:06,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:05:06,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:05:06,650 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:05:06,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-15 00:05:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:06,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-15 00:05:06,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:05:06,783 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 23 treesize of output 1 [2024-10-15 00:05:07,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-15 00:05:07,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:05:07,190 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:05:07,606 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 20 treesize of output 18 [2024-10-15 00:05:07,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2024-10-15 00:05:07,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:05:07,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571287060] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:05:07,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:05:07,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2024-10-15 00:05:07,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188600958] [2024-10-15 00:05:07,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:05:07,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-15 00:05:07,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:07,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-15 00:05:07,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2024-10-15 00:05:07,804 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 70 [2024-10-15 00:05:07,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 184 transitions, 1703 flow. Second operand has 24 states, 24 states have (on average 19.375) internal successors, (465), 24 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:07,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:07,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 70 [2024-10-15 00:05:07,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:18,588 INFO L124 PetriNetUnfolderBase]: 37724/64828 cut-off events. [2024-10-15 00:05:18,589 INFO L125 PetriNetUnfolderBase]: For 94482/96248 co-relation queries the response was YES. [2024-10-15 00:05:19,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185791 conditions, 64828 events. 37724/64828 cut-off events. For 94482/96248 co-relation queries the response was YES. Maximal size of possible extension queue 1701. Compared 567504 event pairs, 6528 based on Foata normal form. 96/60806 useless extension candidates. Maximal degree in co-relation 185746. Up to 11397 conditions per place. [2024-10-15 00:05:19,459 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 563 selfloop transitions, 135 changer transitions 22/739 dead transitions. [2024-10-15 00:05:19,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 739 transitions, 5763 flow [2024-10-15 00:05:19,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-15 00:05:19,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-15 00:05:19,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 807 transitions. [2024-10-15 00:05:19,462 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42698412698412697 [2024-10-15 00:05:19,462 INFO L175 Difference]: Start difference. First operand has 172 places, 184 transitions, 1703 flow. Second operand 27 states and 807 transitions. [2024-10-15 00:05:19,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 739 transitions, 5763 flow [2024-10-15 00:05:20,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 739 transitions, 5551 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-10-15 00:05:20,207 INFO L231 Difference]: Finished difference. Result has 195 places, 223 transitions, 2232 flow [2024-10-15 00:05:20,208 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1565, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2232, PETRI_PLACES=195, PETRI_TRANSITIONS=223} [2024-10-15 00:05:20,209 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 127 predicate places. [2024-10-15 00:05:20,209 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 223 transitions, 2232 flow [2024-10-15 00:05:20,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 19.375) internal successors, (465), 24 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:20,209 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:20,210 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:05:20,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-15 00:05:20,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-15 00:05:20,411 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-15 00:05:20,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:20,411 INFO L85 PathProgramCache]: Analyzing trace with hash 2111293468, now seen corresponding path program 1 times [2024-10-15 00:05:20,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:20,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140347252] [2024-10-15 00:05:20,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:20,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:21,236 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:05:21,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:05:21,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140347252] [2024-10-15 00:05:21,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140347252] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:05:21,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564055164] [2024-10-15 00:05:21,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:21,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:05:21,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:05:21,240 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:05:21,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-15 00:05:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:05:21,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-15 00:05:21,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:05:21,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-15 00:05:21,397 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 23 treesize of output 1 [2024-10-15 00:05:21,473 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-15 00:05:21,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-15 00:05:21,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-15 00:05:21,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-15 00:05:21,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-15 00:05:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:05:21,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:05:22,424 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-15 00:05:22,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 44 [2024-10-15 00:05:22,437 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-10-15 00:05:22,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 53 [2024-10-15 00:05:22,448 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-15 00:05:22,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 28 [2024-10-15 00:05:22,522 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:05:22,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564055164] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:05:22,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:05:22,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-10-15 00:05:22,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115523389] [2024-10-15 00:05:22,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:05:22,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-15 00:05:22,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:05:22,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-15 00:05:22,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=552, Unknown=1, NotChecked=0, Total=650 [2024-10-15 00:05:22,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 70 [2024-10-15 00:05:22,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 223 transitions, 2232 flow. Second operand has 26 states, 26 states have (on average 16.423076923076923) internal successors, (427), 26 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:22,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:05:22,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 70 [2024-10-15 00:05:22,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:05:35,789 INFO L124 PetriNetUnfolderBase]: 49298/81605 cut-off events. [2024-10-15 00:05:35,789 INFO L125 PetriNetUnfolderBase]: For 144679/145656 co-relation queries the response was YES. [2024-10-15 00:05:36,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255446 conditions, 81605 events. 49298/81605 cut-off events. For 144679/145656 co-relation queries the response was YES. Maximal size of possible extension queue 2033. Compared 691828 event pairs, 21754 based on Foata normal form. 418/78916 useless extension candidates. Maximal degree in co-relation 255392. Up to 38403 conditions per place. [2024-10-15 00:05:37,442 INFO L140 encePairwiseOnDemand]: 54/70 looper letters, 488 selfloop transitions, 118 changer transitions 35/654 dead transitions. [2024-10-15 00:05:37,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 654 transitions, 6223 flow [2024-10-15 00:05:37,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-15 00:05:37,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-10-15 00:05:37,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 653 transitions. [2024-10-15 00:05:37,446 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3216748768472906 [2024-10-15 00:05:37,446 INFO L175 Difference]: Start difference. First operand has 195 places, 223 transitions, 2232 flow. Second operand 29 states and 653 transitions. [2024-10-15 00:05:37,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 654 transitions, 6223 flow [2024-10-15 00:05:39,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 654 transitions, 5881 flow, removed 104 selfloop flow, removed 6 redundant places. [2024-10-15 00:05:39,468 INFO L231 Difference]: Finished difference. Result has 227 places, 273 transitions, 2772 flow [2024-10-15 00:05:39,469 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=2069, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2772, PETRI_PLACES=227, PETRI_TRANSITIONS=273} [2024-10-15 00:05:39,470 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 159 predicate places. [2024-10-15 00:05:39,470 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 273 transitions, 2772 flow [2024-10-15 00:05:39,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 16.423076923076923) internal successors, (427), 26 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:05:39,471 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:05:39,471 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] [2024-10-15 00:05:39,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-15 00:05:39,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:05:39,676 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-15 00:05:39,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:05:39,676 INFO L85 PathProgramCache]: Analyzing trace with hash 298265733, now seen corresponding path program 1 times [2024-10-15 00:05:39,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:05:39,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015901630] [2024-10-15 00:05:39,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:05:39,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:05:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat