./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_safe-7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_safe-7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX --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 2a12d5b905fa07b94a851888f481630fccc5d15913fb6b7efa54c908526d1783 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:55:11,324 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:55:11,438 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-08 16:55:11,448 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:55:11,449 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:55:11,501 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:55:11,504 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:55:11,505 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:55:11,505 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:55:11,506 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:55:11,506 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:55:11,507 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:55:11,508 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:55:11,513 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:55:11,513 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:55:11,514 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:55:11,514 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:55:11,515 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:55:11,515 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:55:11,516 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:55:11,521 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:55:11,521 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:55:11,522 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:55:11,522 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:55:11,522 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:55:11,523 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 16:55:11,523 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 16:55:11,523 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:55:11,524 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:55:11,524 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:55:11,524 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:55:11,525 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:55:11,525 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:55:11,525 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:55:11,526 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:55:11,526 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:55:11,527 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:55:11,527 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:55:11,527 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:55:11,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:55:11,528 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:55:11,528 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:55:11,529 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:55:11,529 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:55:11,529 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a12d5b905fa07b94a851888f481630fccc5d15913fb6b7efa54c908526d1783 [2024-11-08 16:55:11,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:55:11,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:55:11,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:55:11,932 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:55:11,932 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:55:11,934 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/pthread/fib_safe-7.i Unable to find full path for "g++" [2024-11-08 16:55:14,338 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:55:14,623 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:55:14,624 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/sv-benchmarks/c/pthread/fib_safe-7.i [2024-11-08 16:55:14,640 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/data/262da1344/66591e212b7f4170bd9c2f91c6a75277/FLAG0aa53c109 [2024-11-08 16:55:14,919 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/data/262da1344/66591e212b7f4170bd9c2f91c6a75277 [2024-11-08 16:55:14,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:55:14,923 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:55:14,925 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:55:14,925 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:55:14,932 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:55:14,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:55:14" (1/1) ... [2024-11-08 16:55:14,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1305ac35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:14, skipping insertion in model container [2024-11-08 16:55:14,934 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:55:14" (1/1) ... [2024-11-08 16:55:14,996 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:55:15,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:55:15,489 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:55:15,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:55:15,589 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:55:15,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:15 WrapperNode [2024-11-08 16:55:15,590 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:55:15,591 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:55:15,591 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:55:15,591 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:55:15,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:15" (1/1) ... [2024-11-08 16:55:15,620 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:15" (1/1) ... [2024-11-08 16:55:15,651 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 71 [2024-11-08 16:55:15,653 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:55:15,654 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:55:15,654 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:55:15,654 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:55:15,668 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:15" (1/1) ... [2024-11-08 16:55:15,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:15" (1/1) ... [2024-11-08 16:55:15,672 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:15" (1/1) ... [2024-11-08 16:55:15,703 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 16:55:15,706 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:15" (1/1) ... [2024-11-08 16:55:15,707 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:15" (1/1) ... [2024-11-08 16:55:15,711 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:15" (1/1) ... [2024-11-08 16:55:15,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:15" (1/1) ... [2024-11-08 16:55:15,724 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:15" (1/1) ... [2024-11-08 16:55:15,730 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:15" (1/1) ... [2024-11-08 16:55:15,732 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:55:15,737 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:55:15,737 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:55:15,737 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:55:15,738 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:15" (1/1) ... [2024-11-08 16:55:15,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:55:15,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:55:15,786 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:55:15,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:55:15,859 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-08 16:55:15,859 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-08 16:55:15,859 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-08 16:55:15,859 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-08 16:55:15,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 16:55:15,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:55:15,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:55:15,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 16:55:15,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:55:15,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:55:15,862 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 16:55:16,114 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:55:16,117 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:55:16,404 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 16:55:16,405 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:55:16,598 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:55:16,599 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:55:16,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:55:16 BoogieIcfgContainer [2024-11-08 16:55:16,599 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:55:16,603 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:55:16,603 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:55:16,608 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:55:16,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:55:14" (1/3) ... [2024-11-08 16:55:16,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5e82ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:55:16, skipping insertion in model container [2024-11-08 16:55:16,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:55:15" (2/3) ... [2024-11-08 16:55:16,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5e82ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:55:16, skipping insertion in model container [2024-11-08 16:55:16,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:55:16" (3/3) ... [2024-11-08 16:55:16,614 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-7.i [2024-11-08 16:55:16,637 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:55:16,638 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-08 16:55:16,639 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 16:55:16,702 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 16:55:16,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 53 transitions, 114 flow [2024-11-08 16:55:16,785 INFO L124 PetriNetUnfolderBase]: 6/51 cut-off events. [2024-11-08 16:55:16,786 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:55:16,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 51 events. 6/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 145 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2024-11-08 16:55:16,793 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 53 transitions, 114 flow [2024-11-08 16:55:16,797 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 51 transitions, 108 flow [2024-11-08 16:55:16,807 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:55:16,814 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;@48ff72af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:55:16,815 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-08 16:55:16,824 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:55:16,825 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2024-11-08 16:55:16,825 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:55:16,825 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:16,826 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:16,826 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 16:55:16,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:16,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1278590766, now seen corresponding path program 1 times [2024-11-08 16:55:16,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:16,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59236741] [2024-11-08 16:55:16,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:16,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:17,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:17,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:17,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59236741] [2024-11-08 16:55:17,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59236741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:17,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:17,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:55:17,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349418464] [2024-11-08 16:55:17,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:17,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:55:17,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:17,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:55:17,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:55:17,341 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 16:55:17,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:17,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:17,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 16:55:17,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:17,854 INFO L124 PetriNetUnfolderBase]: 702/1468 cut-off events. [2024-11-08 16:55:17,857 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-08 16:55:17,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2487 conditions, 1468 events. 702/1468 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 9704 event pairs, 156 based on Foata normal form. 0/1080 useless extension candidates. Maximal degree in co-relation 2471. Up to 514 conditions per place. [2024-11-08 16:55:17,892 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 46 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2024-11-08 16:55:17,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 78 transitions, 267 flow [2024-11-08 16:55:17,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:55:17,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:55:17,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 171 transitions. [2024-11-08 16:55:17,909 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8066037735849056 [2024-11-08 16:55:17,911 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 108 flow. Second operand 4 states and 171 transitions. [2024-11-08 16:55:17,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 78 transitions, 267 flow [2024-11-08 16:55:17,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 16:55:17,921 INFO L231 Difference]: Finished difference. Result has 54 places, 54 transitions, 137 flow [2024-11-08 16:55:17,924 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=54, PETRI_TRANSITIONS=54} [2024-11-08 16:55:17,929 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-11-08 16:55:17,929 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 54 transitions, 137 flow [2024-11-08 16:55:17,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:17,930 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:17,930 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:17,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:55:17,931 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 16:55:17,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:17,932 INFO L85 PathProgramCache]: Analyzing trace with hash -365068075, now seen corresponding path program 1 times [2024-11-08 16:55:17,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:17,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338210597] [2024-11-08 16:55:17,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:17,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:18,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:18,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338210597] [2024-11-08 16:55:18,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338210597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:18,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:18,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:55:18,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734491354] [2024-11-08 16:55:18,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:18,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:55:18,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:18,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:55:18,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:55:18,128 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-11-08 16:55:18,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 54 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:18,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:18,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-11-08 16:55:18,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:18,680 INFO L124 PetriNetUnfolderBase]: 1006/1878 cut-off events. [2024-11-08 16:55:18,680 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2024-11-08 16:55:18,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3829 conditions, 1878 events. 1006/1878 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 12595 event pairs, 213 based on Foata normal form. 115/1622 useless extension candidates. Maximal degree in co-relation 3813. Up to 911 conditions per place. [2024-11-08 16:55:18,705 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 57 selfloop transitions, 3 changer transitions 0/84 dead transitions. [2024-11-08 16:55:18,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 84 transitions, 337 flow [2024-11-08 16:55:18,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:55:18,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:55:18,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2024-11-08 16:55:18,710 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7830188679245284 [2024-11-08 16:55:18,711 INFO L175 Difference]: Start difference. First operand has 54 places, 54 transitions, 137 flow. Second operand 4 states and 166 transitions. [2024-11-08 16:55:18,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 84 transitions, 337 flow [2024-11-08 16:55:18,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 84 transitions, 337 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 16:55:18,719 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 163 flow [2024-11-08 16:55:18,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2024-11-08 16:55:18,721 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-11-08 16:55:18,721 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 163 flow [2024-11-08 16:55:18,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:18,722 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:18,722 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:18,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:55:18,723 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 16:55:18,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:18,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1313995110, now seen corresponding path program 1 times [2024-11-08 16:55:18,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:18,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811015513] [2024-11-08 16:55:18,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:18,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:18,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:18,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:18,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811015513] [2024-11-08 16:55:18,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811015513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:18,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:18,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 16:55:18,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641059088] [2024-11-08 16:55:18,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:18,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:55:18,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:18,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:55:18,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:55:18,881 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 53 [2024-11-08 16:55:18,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:18,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:18,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 53 [2024-11-08 16:55:18,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:19,429 INFO L124 PetriNetUnfolderBase]: 1258/2779 cut-off events. [2024-11-08 16:55:19,430 INFO L125 PetriNetUnfolderBase]: For 437/594 co-relation queries the response was YES. [2024-11-08 16:55:19,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5358 conditions, 2779 events. 1258/2779 cut-off events. For 437/594 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 22184 event pairs, 365 based on Foata normal form. 115/2246 useless extension candidates. Maximal degree in co-relation 5338. Up to 993 conditions per place. [2024-11-08 16:55:19,466 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 44 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-11-08 16:55:19,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 75 transitions, 318 flow [2024-11-08 16:55:19,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:55:19,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:55:19,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2024-11-08 16:55:19,469 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2024-11-08 16:55:19,470 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 163 flow. Second operand 3 states and 129 transitions. [2024-11-08 16:55:19,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 75 transitions, 318 flow [2024-11-08 16:55:19,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 75 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:55:19,476 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 173 flow [2024-11-08 16:55:19,478 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-11-08 16:55:19,480 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-11-08 16:55:19,481 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 173 flow [2024-11-08 16:55:19,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:19,481 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:19,482 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:19,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:55:19,482 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 16:55:19,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:19,484 INFO L85 PathProgramCache]: Analyzing trace with hash -2079142475, now seen corresponding path program 1 times [2024-11-08 16:55:19,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:19,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155334752] [2024-11-08 16:55:19,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:19,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:19,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:19,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:19,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155334752] [2024-11-08 16:55:19,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155334752] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:19,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:19,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 16:55:19,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245203807] [2024-11-08 16:55:19,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:19,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:55:19,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:19,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:55:19,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:55:19,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 53 [2024-11-08 16:55:19,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:19,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:19,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 53 [2024-11-08 16:55:19,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:20,217 INFO L124 PetriNetUnfolderBase]: 1258/2727 cut-off events. [2024-11-08 16:55:20,217 INFO L125 PetriNetUnfolderBase]: For 561/718 co-relation queries the response was YES. [2024-11-08 16:55:20,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5500 conditions, 2727 events. 1258/2727 cut-off events. For 561/718 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 21469 event pairs, 365 based on Foata normal form. 105/2184 useless extension candidates. Maximal degree in co-relation 5478. Up to 993 conditions per place. [2024-11-08 16:55:20,252 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 44 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-11-08 16:55:20,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 75 transitions, 325 flow [2024-11-08 16:55:20,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:55:20,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 16:55:20,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2024-11-08 16:55:20,257 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8113207547169812 [2024-11-08 16:55:20,257 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 173 flow. Second operand 3 states and 129 transitions. [2024-11-08 16:55:20,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 75 transitions, 325 flow [2024-11-08 16:55:20,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 75 transitions, 323 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:55:20,264 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 179 flow [2024-11-08 16:55:20,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2024-11-08 16:55:20,266 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2024-11-08 16:55:20,267 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 179 flow [2024-11-08 16:55:20,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:20,267 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:20,268 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:20,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:55:20,268 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 16:55:20,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:20,269 INFO L85 PathProgramCache]: Analyzing trace with hash 689054452, now seen corresponding path program 1 times [2024-11-08 16:55:20,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:20,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016051461] [2024-11-08 16:55:20,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:20,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:20,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:20,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:20,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016051461] [2024-11-08 16:55:20,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016051461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:20,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:20,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:55:20,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577117952] [2024-11-08 16:55:20,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:20,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:55:20,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:20,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:55:20,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:55:20,420 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-11-08 16:55:20,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:20,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:20,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-11-08 16:55:20,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:21,189 INFO L124 PetriNetUnfolderBase]: 2378/4389 cut-off events. [2024-11-08 16:55:21,189 INFO L125 PetriNetUnfolderBase]: For 1326/1773 co-relation queries the response was YES. [2024-11-08 16:55:21,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9805 conditions, 4389 events. 2378/4389 cut-off events. For 1326/1773 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 33182 event pairs, 457 based on Foata normal form. 319/3959 useless extension candidates. Maximal degree in co-relation 9781. Up to 2321 conditions per place. [2024-11-08 16:55:21,288 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 62 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2024-11-08 16:55:21,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 90 transitions, 419 flow [2024-11-08 16:55:21,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:55:21,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:55:21,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2024-11-08 16:55:21,290 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7641509433962265 [2024-11-08 16:55:21,290 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 179 flow. Second operand 4 states and 162 transitions. [2024-11-08 16:55:21,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 90 transitions, 419 flow [2024-11-08 16:55:21,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 90 transitions, 411 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 16:55:21,296 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 201 flow [2024-11-08 16:55:21,296 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-11-08 16:55:21,297 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 14 predicate places. [2024-11-08 16:55:21,297 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 201 flow [2024-11-08 16:55:21,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:21,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:21,298 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:21,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:55:21,299 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 16:55:21,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:21,300 INFO L85 PathProgramCache]: Analyzing trace with hash -28907008, now seen corresponding path program 1 times [2024-11-08 16:55:21,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:21,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426871320] [2024-11-08 16:55:21,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:21,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:21,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:21,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:21,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426871320] [2024-11-08 16:55:21,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426871320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:21,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:21,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:55:21,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508288610] [2024-11-08 16:55:21,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:21,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:55:21,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:21,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:55:21,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:55:21,393 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-11-08 16:55:21,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:21,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:21,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-11-08 16:55:21,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:22,076 INFO L124 PetriNetUnfolderBase]: 1874/3805 cut-off events. [2024-11-08 16:55:22,077 INFO L125 PetriNetUnfolderBase]: For 1100/1645 co-relation queries the response was YES. [2024-11-08 16:55:22,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8659 conditions, 3805 events. 1874/3805 cut-off events. For 1100/1645 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 30148 event pairs, 227 based on Foata normal form. 447/3619 useless extension candidates. Maximal degree in co-relation 8633. Up to 2025 conditions per place. [2024-11-08 16:55:22,109 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 64 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2024-11-08 16:55:22,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 94 transitions, 463 flow [2024-11-08 16:55:22,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:55:22,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:55:22,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-08 16:55:22,112 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7735849056603774 [2024-11-08 16:55:22,112 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 201 flow. Second operand 4 states and 164 transitions. [2024-11-08 16:55:22,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 94 transitions, 463 flow [2024-11-08 16:55:22,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 94 transitions, 459 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 16:55:22,116 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 221 flow [2024-11-08 16:55:22,117 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=221, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-11-08 16:55:22,118 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2024-11-08 16:55:22,118 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 221 flow [2024-11-08 16:55:22,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:22,119 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:22,119 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:22,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:55:22,120 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 16:55:22,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:22,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1399838103, now seen corresponding path program 1 times [2024-11-08 16:55:22,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:22,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129057903] [2024-11-08 16:55:22,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:22,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:22,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:22,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:22,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129057903] [2024-11-08 16:55:22,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129057903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:22,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:22,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:55:22,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986303465] [2024-11-08 16:55:22,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:22,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:55:22,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:22,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:55:22,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:55:22,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 16:55:22,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 221 flow. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:22,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:22,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 16:55:22,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:22,778 INFO L124 PetriNetUnfolderBase]: 1452/2999 cut-off events. [2024-11-08 16:55:22,779 INFO L125 PetriNetUnfolderBase]: For 1510/1894 co-relation queries the response was YES. [2024-11-08 16:55:22,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7594 conditions, 2999 events. 1452/2999 cut-off events. For 1510/1894 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 21996 event pairs, 216 based on Foata normal form. 77/2720 useless extension candidates. Maximal degree in co-relation 7563. Up to 1291 conditions per place. [2024-11-08 16:55:22,805 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 66 selfloop transitions, 7 changer transitions 0/102 dead transitions. [2024-11-08 16:55:22,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 102 transitions, 521 flow [2024-11-08 16:55:22,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:55:22,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 16:55:22,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 209 transitions. [2024-11-08 16:55:22,807 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7886792452830189 [2024-11-08 16:55:22,807 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 221 flow. Second operand 5 states and 209 transitions. [2024-11-08 16:55:22,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 102 transitions, 521 flow [2024-11-08 16:55:22,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 102 transitions, 511 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 16:55:22,813 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 250 flow [2024-11-08 16:55:22,814 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2024-11-08 16:55:22,814 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 21 predicate places. [2024-11-08 16:55:22,815 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 250 flow [2024-11-08 16:55:22,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:22,815 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:22,815 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:22,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 16:55:22,816 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 16:55:22,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:22,817 INFO L85 PathProgramCache]: Analyzing trace with hash 274026820, now seen corresponding path program 1 times [2024-11-08 16:55:22,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:22,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115808160] [2024-11-08 16:55:22,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:22,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:22,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:22,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115808160] [2024-11-08 16:55:22,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115808160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:22,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:22,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:55:22,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945220869] [2024-11-08 16:55:22,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:22,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:55:22,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:22,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:55:22,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:55:22,950 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 16:55:22,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 250 flow. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:22,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:22,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 16:55:22,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:23,473 INFO L124 PetriNetUnfolderBase]: 1238/2571 cut-off events. [2024-11-08 16:55:23,474 INFO L125 PetriNetUnfolderBase]: For 1744/2093 co-relation queries the response was YES. [2024-11-08 16:55:23,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6926 conditions, 2571 events. 1238/2571 cut-off events. For 1744/2093 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 18246 event pairs, 223 based on Foata normal form. 165/2634 useless extension candidates. Maximal degree in co-relation 6893. Up to 849 conditions per place. [2024-11-08 16:55:23,509 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 66 selfloop transitions, 7 changer transitions 0/102 dead transitions. [2024-11-08 16:55:23,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 102 transitions, 554 flow [2024-11-08 16:55:23,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:55:23,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 16:55:23,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 206 transitions. [2024-11-08 16:55:23,544 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7773584905660378 [2024-11-08 16:55:23,544 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 250 flow. Second operand 5 states and 206 transitions. [2024-11-08 16:55:23,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 102 transitions, 554 flow [2024-11-08 16:55:23,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 102 transitions, 539 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-08 16:55:23,553 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 264 flow [2024-11-08 16:55:23,554 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2024-11-08 16:55:23,555 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 23 predicate places. [2024-11-08 16:55:23,555 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 264 flow [2024-11-08 16:55:23,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:23,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:23,560 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:23,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 16:55:23,561 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 16:55:23,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:23,561 INFO L85 PathProgramCache]: Analyzing trace with hash 274268111, now seen corresponding path program 1 times [2024-11-08 16:55:23,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:23,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43957466] [2024-11-08 16:55:23,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:23,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:23,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:23,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:23,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43957466] [2024-11-08 16:55:23,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43957466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:23,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:23,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:55:23,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542203248] [2024-11-08 16:55:23,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:23,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:55:23,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:23,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:55:23,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:55:23,713 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 16:55:23,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 264 flow. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:23,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:23,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 16:55:23,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:24,354 INFO L124 PetriNetUnfolderBase]: 1350/2823 cut-off events. [2024-11-08 16:55:24,355 INFO L125 PetriNetUnfolderBase]: For 2689/3052 co-relation queries the response was YES. [2024-11-08 16:55:24,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7828 conditions, 2823 events. 1350/2823 cut-off events. For 2689/3052 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 20505 event pairs, 279 based on Foata normal form. 119/2938 useless extension candidates. Maximal degree in co-relation 7794. Up to 1236 conditions per place. [2024-11-08 16:55:24,391 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 65 selfloop transitions, 9 changer transitions 0/103 dead transitions. [2024-11-08 16:55:24,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 103 transitions, 576 flow [2024-11-08 16:55:24,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:55:24,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 16:55:24,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 207 transitions. [2024-11-08 16:55:24,393 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7811320754716982 [2024-11-08 16:55:24,393 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 264 flow. Second operand 5 states and 207 transitions. [2024-11-08 16:55:24,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 103 transitions, 576 flow [2024-11-08 16:55:24,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 103 transitions, 563 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 16:55:24,402 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 316 flow [2024-11-08 16:55:24,403 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=316, PETRI_PLACES=78, PETRI_TRANSITIONS=67} [2024-11-08 16:55:24,404 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 26 predicate places. [2024-11-08 16:55:24,404 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 316 flow [2024-11-08 16:55:24,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:24,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:24,405 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:24,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 16:55:24,405 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 16:55:24,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:24,406 INFO L85 PathProgramCache]: Analyzing trace with hash 274268110, now seen corresponding path program 1 times [2024-11-08 16:55:24,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:24,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81651277] [2024-11-08 16:55:24,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:24,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:24,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:24,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:24,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81651277] [2024-11-08 16:55:24,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81651277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:24,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:24,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:55:24,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950545712] [2024-11-08 16:55:24,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:24,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:55:24,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:24,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:55:24,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:55:24,507 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 16:55:24,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 67 transitions, 316 flow. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:24,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:24,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 16:55:24,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:24,939 INFO L124 PetriNetUnfolderBase]: 1168/2501 cut-off events. [2024-11-08 16:55:24,939 INFO L125 PetriNetUnfolderBase]: For 3550/3860 co-relation queries the response was YES. [2024-11-08 16:55:24,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7191 conditions, 2501 events. 1168/2501 cut-off events. For 3550/3860 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 17836 event pairs, 258 based on Foata normal form. 147/2644 useless extension candidates. Maximal degree in co-relation 7154. Up to 1229 conditions per place. [2024-11-08 16:55:24,966 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 54 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2024-11-08 16:55:24,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 89 transitions, 514 flow [2024-11-08 16:55:24,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:55:24,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 16:55:24,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2024-11-08 16:55:24,968 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7283018867924528 [2024-11-08 16:55:24,968 INFO L175 Difference]: Start difference. First operand has 78 places, 67 transitions, 316 flow. Second operand 5 states and 193 transitions. [2024-11-08 16:55:24,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 89 transitions, 514 flow [2024-11-08 16:55:24,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 89 transitions, 496 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-08 16:55:24,978 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 297 flow [2024-11-08 16:55:24,979 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=297, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2024-11-08 16:55:24,979 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2024-11-08 16:55:24,980 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 297 flow [2024-11-08 16:55:24,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:24,980 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:24,981 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:24,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 16:55:24,981 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 16:55:24,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:24,982 INFO L85 PathProgramCache]: Analyzing trace with hash -286089201, now seen corresponding path program 1 times [2024-11-08 16:55:24,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:24,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773032324] [2024-11-08 16:55:24,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:24,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:25,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:25,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:25,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773032324] [2024-11-08 16:55:25,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773032324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:25,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683019242] [2024-11-08 16:55:25,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:25,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:25,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:55:25,082 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:55:25,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:55:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:25,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:55:25,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:25,287 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:25,288 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:55:25,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683019242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:25,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:55:25,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-08 16:55:25,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301772884] [2024-11-08 16:55:25,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:25,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:55:25,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:25,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:55:25,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:55:25,317 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-11-08 16:55:25,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:25,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:25,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-11-08 16:55:25,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:25,976 INFO L124 PetriNetUnfolderBase]: 1723/3208 cut-off events. [2024-11-08 16:55:25,976 INFO L125 PetriNetUnfolderBase]: For 5090/5563 co-relation queries the response was YES. [2024-11-08 16:55:25,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9675 conditions, 3208 events. 1723/3208 cut-off events. For 5090/5563 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 22423 event pairs, 325 based on Foata normal form. 141/3245 useless extension candidates. Maximal degree in co-relation 9639. Up to 1368 conditions per place. [2024-11-08 16:55:26,020 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 86 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2024-11-08 16:55:26,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 116 transitions, 719 flow [2024-11-08 16:55:26,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:55:26,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:55:26,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 226 transitions. [2024-11-08 16:55:26,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.710691823899371 [2024-11-08 16:55:26,025 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 297 flow. Second operand 6 states and 226 transitions. [2024-11-08 16:55:26,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 116 transitions, 719 flow [2024-11-08 16:55:26,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 116 transitions, 710 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 16:55:26,037 INFO L231 Difference]: Finished difference. Result has 81 places, 64 transitions, 294 flow [2024-11-08 16:55:26,038 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=81, PETRI_TRANSITIONS=64} [2024-11-08 16:55:26,038 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 29 predicate places. [2024-11-08 16:55:26,039 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 64 transitions, 294 flow [2024-11-08 16:55:26,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:26,039 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:26,040 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:26,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:55:26,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 16:55:26,245 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 16:55:26,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:26,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1297340425, now seen corresponding path program 1 times [2024-11-08 16:55:26,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:26,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534709894] [2024-11-08 16:55:26,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:26,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:26,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:26,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:26,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534709894] [2024-11-08 16:55:26,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534709894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:26,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554276484] [2024-11-08 16:55:26,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:26,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:26,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:55:26,359 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:55:26,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:55:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:26,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 16:55:26,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:26,614 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:55:26,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554276484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:26,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:55:26,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-11-08 16:55:26,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440866382] [2024-11-08 16:55:26,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:26,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:55:26,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:26,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:55:26,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:55:26,634 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 53 [2024-11-08 16:55:26,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 64 transitions, 294 flow. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:26,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:26,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 53 [2024-11-08 16:55:26,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:27,064 INFO L124 PetriNetUnfolderBase]: 1168/2762 cut-off events. [2024-11-08 16:55:27,064 INFO L125 PetriNetUnfolderBase]: For 4282/4478 co-relation queries the response was YES. [2024-11-08 16:55:27,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7497 conditions, 2762 events. 1168/2762 cut-off events. For 4282/4478 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 21829 event pairs, 187 based on Foata normal form. 122/2803 useless extension candidates. Maximal degree in co-relation 7462. Up to 1216 conditions per place. [2024-11-08 16:55:27,106 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 54 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-11-08 16:55:27,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 85 transitions, 537 flow [2024-11-08 16:55:27,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:55:27,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:55:27,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-11-08 16:55:27,109 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7358490566037735 [2024-11-08 16:55:27,109 INFO L175 Difference]: Start difference. First operand has 81 places, 64 transitions, 294 flow. Second operand 4 states and 156 transitions. [2024-11-08 16:55:27,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 85 transitions, 537 flow [2024-11-08 16:55:27,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 85 transitions, 531 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 16:55:27,119 INFO L231 Difference]: Finished difference. Result has 80 places, 63 transitions, 289 flow [2024-11-08 16:55:27,120 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=289, PETRI_PLACES=80, PETRI_TRANSITIONS=63} [2024-11-08 16:55:27,120 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2024-11-08 16:55:27,121 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 63 transitions, 289 flow [2024-11-08 16:55:27,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:27,121 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:27,122 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:27,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 16:55:27,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 16:55:27,324 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 16:55:27,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:27,324 INFO L85 PathProgramCache]: Analyzing trace with hash -278830309, now seen corresponding path program 1 times [2024-11-08 16:55:27,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:27,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979585418] [2024-11-08 16:55:27,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:27,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:55:27,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:27,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979585418] [2024-11-08 16:55:27,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979585418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:27,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:27,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:55:27,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064298013] [2024-11-08 16:55:27,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:27,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:55:27,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:27,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:55:27,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:55:27,411 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-11-08 16:55:27,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 63 transitions, 289 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:27,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:27,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-11-08 16:55:27,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:28,024 INFO L124 PetriNetUnfolderBase]: 2118/3986 cut-off events. [2024-11-08 16:55:28,024 INFO L125 PetriNetUnfolderBase]: For 6443/7287 co-relation queries the response was YES. [2024-11-08 16:55:28,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11915 conditions, 3986 events. 2118/3986 cut-off events. For 6443/7287 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 29101 event pairs, 1026 based on Foata normal form. 208/4045 useless extension candidates. Maximal degree in co-relation 11880. Up to 1979 conditions per place. [2024-11-08 16:55:28,067 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 70 selfloop transitions, 6 changer transitions 0/98 dead transitions. [2024-11-08 16:55:28,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 98 transitions, 611 flow [2024-11-08 16:55:28,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:55:28,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:55:28,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-11-08 16:55:28,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7122641509433962 [2024-11-08 16:55:28,070 INFO L175 Difference]: Start difference. First operand has 80 places, 63 transitions, 289 flow. Second operand 4 states and 151 transitions. [2024-11-08 16:55:28,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 98 transitions, 611 flow [2024-11-08 16:55:28,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 98 transitions, 602 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-08 16:55:28,085 INFO L231 Difference]: Finished difference. Result has 80 places, 62 transitions, 294 flow [2024-11-08 16:55:28,085 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=80, PETRI_TRANSITIONS=62} [2024-11-08 16:55:28,086 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2024-11-08 16:55:28,086 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 62 transitions, 294 flow [2024-11-08 16:55:28,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:28,087 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:28,087 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:28,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 16:55:28,088 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 16:55:28,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:28,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1562847782, now seen corresponding path program 1 times [2024-11-08 16:55:28,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:28,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343182274] [2024-11-08 16:55:28,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:28,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:28,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:28,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:28,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343182274] [2024-11-08 16:55:28,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343182274] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:28,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376500417] [2024-11-08 16:55:28,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:28,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:28,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:55:28,174 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:55:28,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:55:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:28,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 16:55:28,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:28,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:28,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:55:28,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:28,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376500417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:55:28,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:55:28,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-11-08 16:55:28,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236344883] [2024-11-08 16:55:28,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:55:28,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 16:55:28,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:28,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 16:55:28,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:55:28,521 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 16:55:28,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 62 transitions, 294 flow. Second operand has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:28,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:28,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 16:55:28,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:29,716 INFO L124 PetriNetUnfolderBase]: 3218/7231 cut-off events. [2024-11-08 16:55:29,716 INFO L125 PetriNetUnfolderBase]: For 12411/12871 co-relation queries the response was YES. [2024-11-08 16:55:29,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19401 conditions, 7231 events. 3218/7231 cut-off events. For 12411/12871 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 62368 event pairs, 187 based on Foata normal form. 370/7520 useless extension candidates. Maximal degree in co-relation 19366. Up to 1217 conditions per place. [2024-11-08 16:55:29,794 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 129 selfloop transitions, 5 changer transitions 0/161 dead transitions. [2024-11-08 16:55:29,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 161 transitions, 1142 flow [2024-11-08 16:55:29,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:55:29,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:55:29,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 261 transitions. [2024-11-08 16:55:29,797 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8207547169811321 [2024-11-08 16:55:29,797 INFO L175 Difference]: Start difference. First operand has 80 places, 62 transitions, 294 flow. Second operand 6 states and 261 transitions. [2024-11-08 16:55:29,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 161 transitions, 1142 flow [2024-11-08 16:55:29,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 161 transitions, 1126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 16:55:29,819 INFO L231 Difference]: Finished difference. Result has 86 places, 65 transitions, 322 flow [2024-11-08 16:55:29,820 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=322, PETRI_PLACES=86, PETRI_TRANSITIONS=65} [2024-11-08 16:55:29,822 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 34 predicate places. [2024-11-08 16:55:29,822 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 65 transitions, 322 flow [2024-11-08 16:55:29,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:29,824 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:29,824 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:29,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 16:55:30,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 16:55:30,026 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 16:55:30,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:30,027 INFO L85 PathProgramCache]: Analyzing trace with hash -254368722, now seen corresponding path program 1 times [2024-11-08 16:55:30,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:30,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282353871] [2024-11-08 16:55:30,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:30,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:30,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:30,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:30,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282353871] [2024-11-08 16:55:30,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282353871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:30,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326862075] [2024-11-08 16:55:30,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:30,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:30,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:55:30,217 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:55:30,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:55:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:30,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:55:30,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:30,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:30,358 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:55:30,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326862075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:30,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:55:30,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-08 16:55:30,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917892997] [2024-11-08 16:55:30,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:30,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:55:30,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:30,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:55:30,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:55:30,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-11-08 16:55:30,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 65 transitions, 322 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:30,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:30,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-11-08 16:55:30,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:31,576 INFO L124 PetriNetUnfolderBase]: 4393/8099 cut-off events. [2024-11-08 16:55:31,576 INFO L125 PetriNetUnfolderBase]: For 15530/16016 co-relation queries the response was YES. [2024-11-08 16:55:31,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25015 conditions, 8099 events. 4393/8099 cut-off events. For 15530/16016 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 62345 event pairs, 833 based on Foata normal form. 162/8057 useless extension candidates. Maximal degree in co-relation 24976. Up to 3420 conditions per place. [2024-11-08 16:55:31,739 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 92 selfloop transitions, 5 changer transitions 0/119 dead transitions. [2024-11-08 16:55:31,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 119 transitions, 826 flow [2024-11-08 16:55:31,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:55:31,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:55:31,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 220 transitions. [2024-11-08 16:55:31,742 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6918238993710691 [2024-11-08 16:55:31,742 INFO L175 Difference]: Start difference. First operand has 86 places, 65 transitions, 322 flow. Second operand 6 states and 220 transitions. [2024-11-08 16:55:31,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 119 transitions, 826 flow [2024-11-08 16:55:31,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 119 transitions, 784 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-11-08 16:55:31,756 INFO L231 Difference]: Finished difference. Result has 88 places, 64 transitions, 316 flow [2024-11-08 16:55:31,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=316, PETRI_PLACES=88, PETRI_TRANSITIONS=64} [2024-11-08 16:55:31,758 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2024-11-08 16:55:31,758 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 64 transitions, 316 flow [2024-11-08 16:55:31,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:31,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:31,759 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:31,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 16:55:31,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 16:55:31,959 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 16:55:31,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:31,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1203641263, now seen corresponding path program 1 times [2024-11-08 16:55:31,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:31,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857554574] [2024-11-08 16:55:31,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:31,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:32,047 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:32,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:32,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857554574] [2024-11-08 16:55:32,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857554574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:32,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544472286] [2024-11-08 16:55:32,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:32,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:32,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:55:32,051 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:55:32,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 16:55:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:32,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:55:32,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:32,201 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:32,201 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:55:32,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544472286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:32,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:55:32,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-08 16:55:32,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021936778] [2024-11-08 16:55:32,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:32,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:55:32,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:32,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:55:32,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:55:32,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2024-11-08 16:55:32,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 64 transitions, 316 flow. Second operand has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:32,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:32,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2024-11-08 16:55:32,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:33,610 INFO L124 PetriNetUnfolderBase]: 4130/7910 cut-off events. [2024-11-08 16:55:33,610 INFO L125 PetriNetUnfolderBase]: For 16960/17171 co-relation queries the response was YES. [2024-11-08 16:55:33,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24138 conditions, 7910 events. 4130/7910 cut-off events. For 16960/17171 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 62279 event pairs, 187 based on Foata normal form. 228/7829 useless extension candidates. Maximal degree in co-relation 24099. Up to 3952 conditions per place. [2024-11-08 16:55:33,804 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 98 selfloop transitions, 8 changer transitions 0/129 dead transitions. [2024-11-08 16:55:33,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 129 transitions, 941 flow [2024-11-08 16:55:33,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:55:33,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:55:33,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 226 transitions. [2024-11-08 16:55:33,806 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.710691823899371 [2024-11-08 16:55:33,807 INFO L175 Difference]: Start difference. First operand has 88 places, 64 transitions, 316 flow. Second operand 6 states and 226 transitions. [2024-11-08 16:55:33,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 129 transitions, 941 flow [2024-11-08 16:55:33,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 129 transitions, 933 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 16:55:33,830 INFO L231 Difference]: Finished difference. Result has 89 places, 63 transitions, 323 flow [2024-11-08 16:55:33,830 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=323, PETRI_PLACES=89, PETRI_TRANSITIONS=63} [2024-11-08 16:55:33,831 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 37 predicate places. [2024-11-08 16:55:33,831 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 63 transitions, 323 flow [2024-11-08 16:55:33,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.666666666666668) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:33,831 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:33,832 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:33,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 16:55:34,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 16:55:34,032 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 16:55:34,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:34,033 INFO L85 PathProgramCache]: Analyzing trace with hash 704504554, now seen corresponding path program 1 times [2024-11-08 16:55:34,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:34,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814116820] [2024-11-08 16:55:34,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:34,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:34,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:55:34,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:34,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814116820] [2024-11-08 16:55:34,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814116820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:34,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:34,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:55:34,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549227369] [2024-11-08 16:55:34,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:34,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:55:34,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:34,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:55:34,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:55:34,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2024-11-08 16:55:34,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 63 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:34,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:34,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2024-11-08 16:55:34,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:35,533 INFO L124 PetriNetUnfolderBase]: 5275/8873 cut-off events. [2024-11-08 16:55:35,533 INFO L125 PetriNetUnfolderBase]: For 16786/17110 co-relation queries the response was YES. [2024-11-08 16:55:35,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29410 conditions, 8873 events. 5275/8873 cut-off events. For 16786/17110 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 65183 event pairs, 2749 based on Foata normal form. 360/8922 useless extension candidates. Maximal degree in co-relation 29371. Up to 5007 conditions per place. [2024-11-08 16:55:35,757 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 75 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2024-11-08 16:55:35,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 100 transitions, 705 flow [2024-11-08 16:55:35,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:55:35,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:55:35,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-11-08 16:55:35,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6933962264150944 [2024-11-08 16:55:35,759 INFO L175 Difference]: Start difference. First operand has 89 places, 63 transitions, 323 flow. Second operand 4 states and 147 transitions. [2024-11-08 16:55:35,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 100 transitions, 705 flow [2024-11-08 16:55:35,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 100 transitions, 690 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-08 16:55:35,785 INFO L231 Difference]: Finished difference. Result has 88 places, 62 transitions, 326 flow [2024-11-08 16:55:35,785 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=326, PETRI_PLACES=88, PETRI_TRANSITIONS=62} [2024-11-08 16:55:35,786 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2024-11-08 16:55:35,786 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 62 transitions, 326 flow [2024-11-08 16:55:35,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:35,786 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:35,786 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:35,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 16:55:35,787 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 16:55:35,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:35,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1341826200, now seen corresponding path program 1 times [2024-11-08 16:55:35,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:35,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810991274] [2024-11-08 16:55:35,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:35,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:35,837 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:55:35,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:35,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810991274] [2024-11-08 16:55:35,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810991274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:35,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:55:35,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:55:35,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308759187] [2024-11-08 16:55:35,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:35,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:55:35,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:35,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:55:35,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:55:35,855 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-11-08 16:55:35,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 62 transitions, 326 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) [2024-11-08 16:55:35,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:35,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-11-08 16:55:35,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:37,462 INFO L124 PetriNetUnfolderBase]: 4883/8484 cut-off events. [2024-11-08 16:55:37,462 INFO L125 PetriNetUnfolderBase]: For 22783/22783 co-relation queries the response was YES. [2024-11-08 16:55:37,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28277 conditions, 8484 events. 4883/8484 cut-off events. For 22783/22783 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 62987 event pairs, 1417 based on Foata normal form. 532/8919 useless extension candidates. Maximal degree in co-relation 28238. Up to 3649 conditions per place. [2024-11-08 16:55:37,508 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 76 selfloop transitions, 9 changer transitions 0/105 dead transitions. [2024-11-08 16:55:37,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 105 transitions, 772 flow [2024-11-08 16:55:37,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:55:37,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 16:55:37,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2024-11-08 16:55:37,510 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7169811320754716 [2024-11-08 16:55:37,510 INFO L175 Difference]: Start difference. First operand has 88 places, 62 transitions, 326 flow. Second operand 4 states and 152 transitions. [2024-11-08 16:55:37,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 105 transitions, 772 flow [2024-11-08 16:55:37,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 105 transitions, 756 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-08 16:55:37,529 INFO L231 Difference]: Finished difference. Result has 88 places, 61 transitions, 332 flow [2024-11-08 16:55:37,530 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=332, PETRI_PLACES=88, PETRI_TRANSITIONS=61} [2024-11-08 16:55:37,530 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2024-11-08 16:55:37,531 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 61 transitions, 332 flow [2024-11-08 16:55:37,531 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) [2024-11-08 16:55:37,531 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:37,531 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:37,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 16:55:37,531 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 16:55:37,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:37,532 INFO L85 PathProgramCache]: Analyzing trace with hash 593073353, now seen corresponding path program 1 times [2024-11-08 16:55:37,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:37,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980127365] [2024-11-08 16:55:37,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:37,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:37,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:37,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:37,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980127365] [2024-11-08 16:55:37,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980127365] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:37,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527743807] [2024-11-08 16:55:37,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:37,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:37,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:55:37,640 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:55:37,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 16:55:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:37,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:55:37,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:37,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:37,917 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:55:38,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:38,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527743807] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:55:38,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:55:38,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-08 16:55:38,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291566899] [2024-11-08 16:55:38,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:55:38,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 16:55:38,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:38,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 16:55:38,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-08 16:55:38,099 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 16:55:38,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 61 transitions, 332 flow. Second operand has 14 states, 14 states have (on average 31.642857142857142) internal successors, (443), 14 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:38,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:38,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 16:55:38,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:43,611 INFO L124 PetriNetUnfolderBase]: 11247/23465 cut-off events. [2024-11-08 16:55:43,612 INFO L125 PetriNetUnfolderBase]: For 69193/69193 co-relation queries the response was YES. [2024-11-08 16:55:43,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78922 conditions, 23465 events. 11247/23465 cut-off events. For 69193/69193 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 228854 event pairs, 341 based on Foata normal form. 1442/24903 useless extension candidates. Maximal degree in co-relation 78880. Up to 4201 conditions per place. [2024-11-08 16:55:43,829 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 393 selfloop transitions, 71 changer transitions 0/486 dead transitions. [2024-11-08 16:55:43,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 486 transitions, 4012 flow [2024-11-08 16:55:43,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 16:55:43,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-08 16:55:43,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1157 transitions. [2024-11-08 16:55:43,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7796495956873315 [2024-11-08 16:55:43,837 INFO L175 Difference]: Start difference. First operand has 88 places, 61 transitions, 332 flow. Second operand 28 states and 1157 transitions. [2024-11-08 16:55:43,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 486 transitions, 4012 flow [2024-11-08 16:55:43,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 486 transitions, 3710 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 16:55:43,965 INFO L231 Difference]: Finished difference. Result has 129 places, 133 transitions, 1286 flow [2024-11-08 16:55:43,966 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1286, PETRI_PLACES=129, PETRI_TRANSITIONS=133} [2024-11-08 16:55:43,966 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 77 predicate places. [2024-11-08 16:55:43,967 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 133 transitions, 1286 flow [2024-11-08 16:55:43,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 31.642857142857142) internal successors, (443), 14 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:43,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:43,968 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:43,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 16:55:44,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:44,173 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 16:55:44,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:44,173 INFO L85 PathProgramCache]: Analyzing trace with hash 399273466, now seen corresponding path program 1 times [2024-11-08 16:55:44,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:44,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349480327] [2024-11-08 16:55:44,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:44,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:44,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:44,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:44,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349480327] [2024-11-08 16:55:44,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349480327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:44,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227301092] [2024-11-08 16:55:44,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:44,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:44,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:55:44,292 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:55:44,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 16:55:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:44,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 16:55:44,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:44,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:44,545 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:55:44,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227301092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:55:44,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:55:44,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-08 16:55:44,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529311600] [2024-11-08 16:55:44,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:55:44,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:55:44,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:44,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:55:44,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-08 16:55:44,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 16:55:44,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 133 transitions, 1286 flow. Second operand has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:44,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:44,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 16:55:44,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:48,839 INFO L124 PetriNetUnfolderBase]: 9393/20737 cut-off events. [2024-11-08 16:55:48,839 INFO L125 PetriNetUnfolderBase]: For 207024/207024 co-relation queries the response was YES. [2024-11-08 16:55:48,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81772 conditions, 20737 events. 9393/20737 cut-off events. For 207024/207024 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 205252 event pairs, 1649 based on Foata normal form. 1656/22331 useless extension candidates. Maximal degree in co-relation 81711. Up to 6826 conditions per place. [2024-11-08 16:55:49,092 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 88 selfloop transitions, 27 changer transitions 0/137 dead transitions. [2024-11-08 16:55:49,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 137 transitions, 1421 flow [2024-11-08 16:55:49,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:55:49,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:55:49,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 227 transitions. [2024-11-08 16:55:49,095 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7138364779874213 [2024-11-08 16:55:49,095 INFO L175 Difference]: Start difference. First operand has 129 places, 133 transitions, 1286 flow. Second operand 6 states and 227 transitions. [2024-11-08 16:55:49,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 137 transitions, 1421 flow [2024-11-08 16:55:51,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 137 transitions, 1144 flow, removed 113 selfloop flow, removed 13 redundant places. [2024-11-08 16:55:51,269 INFO L231 Difference]: Finished difference. Result has 117 places, 101 transitions, 725 flow [2024-11-08 16:55:51,269 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=725, PETRI_PLACES=117, PETRI_TRANSITIONS=101} [2024-11-08 16:55:51,270 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 65 predicate places. [2024-11-08 16:55:51,270 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 101 transitions, 725 flow [2024-11-08 16:55:51,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:51,271 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:51,271 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:51,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 16:55:51,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:51,476 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 16:55:51,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:51,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1263102071, now seen corresponding path program 1 times [2024-11-08 16:55:51,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:51,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988268829] [2024-11-08 16:55:51,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:51,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:51,610 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:51,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:51,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988268829] [2024-11-08 16:55:51,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988268829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:51,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016447724] [2024-11-08 16:55:51,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:51,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:51,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:55:51,614 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:55:51,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 16:55:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:51,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 16:55:51,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:51,903 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:51,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:55:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:52,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016447724] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:55:52,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:55:52,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-08 16:55:52,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874145263] [2024-11-08 16:55:52,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:55:52,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 16:55:52,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:52,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 16:55:52,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2024-11-08 16:55:52,138 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 16:55:52,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 101 transitions, 725 flow. Second operand has 17 states, 17 states have (on average 31.529411764705884) internal successors, (536), 17 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:52,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:52,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 16:55:52,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:55:57,231 INFO L124 PetriNetUnfolderBase]: 13285/29345 cut-off events. [2024-11-08 16:55:57,231 INFO L125 PetriNetUnfolderBase]: For 254401/254401 co-relation queries the response was YES. [2024-11-08 16:55:57,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106768 conditions, 29345 events. 13285/29345 cut-off events. For 254401/254401 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 305533 event pairs, 539 based on Foata normal form. 908/30195 useless extension candidates. Maximal degree in co-relation 106713. Up to 7399 conditions per place. [2024-11-08 16:55:57,504 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 304 selfloop transitions, 54 changer transitions 0/380 dead transitions. [2024-11-08 16:55:57,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 380 transitions, 3057 flow [2024-11-08 16:55:57,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 16:55:57,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-08 16:55:57,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 841 transitions. [2024-11-08 16:55:57,508 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7556154537286612 [2024-11-08 16:55:57,508 INFO L175 Difference]: Start difference. First operand has 117 places, 101 transitions, 725 flow. Second operand 21 states and 841 transitions. [2024-11-08 16:55:57,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 380 transitions, 3057 flow [2024-11-08 16:55:58,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 380 transitions, 3040 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-08 16:55:58,183 INFO L231 Difference]: Finished difference. Result has 139 places, 122 transitions, 1120 flow [2024-11-08 16:55:58,183 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1120, PETRI_PLACES=139, PETRI_TRANSITIONS=122} [2024-11-08 16:55:58,183 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 87 predicate places. [2024-11-08 16:55:58,183 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 122 transitions, 1120 flow [2024-11-08 16:55:58,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 31.529411764705884) internal successors, (536), 17 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:58,184 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:55:58,184 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:55:58,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 16:55:58,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-08 16:55:58,384 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 16:55:58,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:55:58,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1521931797, now seen corresponding path program 1 times [2024-11-08 16:55:58,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:55:58,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500147190] [2024-11-08 16:55:58,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:58,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:55:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:58,516 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:58,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:55:58,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500147190] [2024-11-08 16:55:58,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500147190] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:55:58,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466788420] [2024-11-08 16:55:58,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:55:58,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:55:58,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:55:58,519 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:55:58,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 16:55:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:55:58,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 16:55:58,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:55:58,782 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:58,782 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:55:58,950 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:55:58,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466788420] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:55:58,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:55:58,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-08 16:55:58,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297024413] [2024-11-08 16:55:58,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:55:58,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 16:55:58,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:55:58,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 16:55:58,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2024-11-08 16:55:59,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-11-08 16:55:59,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 122 transitions, 1120 flow. Second operand has 20 states, 20 states have (on average 31.45) internal successors, (629), 20 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:55:59,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:55:59,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-11-08 16:55:59,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:56:10,168 INFO L124 PetriNetUnfolderBase]: 25129/56597 cut-off events. [2024-11-08 16:56:10,168 INFO L125 PetriNetUnfolderBase]: For 909044/909044 co-relation queries the response was YES. [2024-11-08 16:56:10,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208544 conditions, 56597 events. 25129/56597 cut-off events. For 909044/909044 co-relation queries the response was YES. Maximal size of possible extension queue 1504. Compared 644215 event pairs, 1241 based on Foata normal form. 2988/59581 useless extension candidates. Maximal degree in co-relation 208483. Up to 6607 conditions per place. [2024-11-08 16:56:10,722 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 521 selfloop transitions, 118 changer transitions 0/661 dead transitions. [2024-11-08 16:56:10,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 661 transitions, 5775 flow [2024-11-08 16:56:10,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-08 16:56:10,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-08 16:56:10,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1492 transitions. [2024-11-08 16:56:10,726 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7608363080061193 [2024-11-08 16:56:10,726 INFO L175 Difference]: Start difference. First operand has 139 places, 122 transitions, 1120 flow. Second operand 37 states and 1492 transitions. [2024-11-08 16:56:10,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 661 transitions, 5775 flow [2024-11-08 16:56:13,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 661 transitions, 5621 flow, removed 56 selfloop flow, removed 13 redundant places. [2024-11-08 16:56:13,107 INFO L231 Difference]: Finished difference. Result has 176 places, 180 transitions, 2153 flow [2024-11-08 16:56:13,107 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2153, PETRI_PLACES=176, PETRI_TRANSITIONS=180} [2024-11-08 16:56:13,108 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 124 predicate places. [2024-11-08 16:56:13,108 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 180 transitions, 2153 flow [2024-11-08 16:56:13,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 31.45) internal successors, (629), 20 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:13,108 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:56:13,109 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:56:13,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 16:56:13,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-08 16:56:13,309 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-11-08 16:56:13,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:56:13,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1496225031, now seen corresponding path program 2 times [2024-11-08 16:56:13,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:56:13,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793826253] [2024-11-08 16:56:13,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:56:13,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:56:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:56:13,489 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:13,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:56:13,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793826253] [2024-11-08 16:56:13,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793826253] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:56:13,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329699650] [2024-11-08 16:56:13,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:56:13,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:56:13,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:56:13,492 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:56:13,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_779bd7ea-8c4c-454d-81ea-971c7be84cf8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 16:56:13,566 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:56:13,566 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:56:13,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 16:56:13,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:56:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:13,760 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:56:13,912 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:56:13,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329699650] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:56:13,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:56:13,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-08 16:56:13,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444827494] [2024-11-08 16:56:13,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:56:13,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 16:56:13,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:56:13,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 16:56:13,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2024-11-08 16:56:13,934 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 53 [2024-11-08 16:56:13,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 180 transitions, 2153 flow. Second operand has 17 states, 17 states have (on average 31.529411764705884) internal successors, (536), 17 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:56:13,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:56:13,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 53 [2024-11-08 16:56:13,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand