./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB --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 387879bf92b16ead997b40b3e249348f8a6b399496756f9bc3c41b6dc3c21353 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:41:45,324 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:41:45,437 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 04:41:45,445 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:41:45,445 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:41:45,492 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:41:45,493 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:41:45,493 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:41:45,494 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:41:45,494 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:41:45,494 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:41:45,494 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:41:45,495 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:41:45,495 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:41:45,495 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:41:45,495 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:41:45,496 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:41:45,496 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:41:45,496 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:41:45,496 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:41:45,496 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:41:45,496 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:41:45,496 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:41:45,496 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:41:45,496 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 04:41:45,497 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:41:45,497 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:41:45,497 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:41:45,497 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:41:45,497 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:41:45,497 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:41:45,497 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:41:45,497 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:41:45,497 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:41:45,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:41:45,498 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:41:45,498 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:41:45,498 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:41:45,498 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:41:45,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:41:45,498 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:41:45,498 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:41:45,499 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:41:45,499 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:41:45,499 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:41:45,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:41:45,499 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:41:45,499 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:41:45,499 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:41:45,499 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:41:45,499 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 387879bf92b16ead997b40b3e249348f8a6b399496756f9bc3c41b6dc3c21353 [2024-11-28 04:41:45,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:41:45,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:41:45,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:41:45,883 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:41:45,884 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:41:45,885 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2024-11-28 04:41:49,030 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/data/adbe73116/6024a189d7d64cf98bdfd71349c4f87b/FLAG22dc0cd7f [2024-11-28 04:41:49,336 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:41:49,337 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2024-11-28 04:41:49,346 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/data/adbe73116/6024a189d7d64cf98bdfd71349c4f87b/FLAG22dc0cd7f [2024-11-28 04:41:49,361 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/data/adbe73116/6024a189d7d64cf98bdfd71349c4f87b [2024-11-28 04:41:49,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:41:49,365 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:41:49,367 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:41:49,367 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:41:49,372 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:41:49,373 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:41:49" (1/1) ... [2024-11-28 04:41:49,374 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e20dfbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:49, skipping insertion in model container [2024-11-28 04:41:49,374 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:41:49" (1/1) ... [2024-11-28 04:41:49,405 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:41:49,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:41:49,610 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:41:49,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:41:49,655 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:41:49,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:49 WrapperNode [2024-11-28 04:41:49,656 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:41:49,657 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:41:49,657 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:41:49,657 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:41:49,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:49" (1/1) ... [2024-11-28 04:41:49,679 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:49" (1/1) ... [2024-11-28 04:41:49,728 INFO L138 Inliner]: procedures = 23, calls = 23, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 167 [2024-11-28 04:41:49,729 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:41:49,729 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:41:49,729 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:41:49,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:41:49,742 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:49" (1/1) ... [2024-11-28 04:41:49,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:49" (1/1) ... [2024-11-28 04:41:49,746 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:49" (1/1) ... [2024-11-28 04:41:49,776 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-28 04:41:49,777 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:49" (1/1) ... [2024-11-28 04:41:49,777 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:49" (1/1) ... [2024-11-28 04:41:49,791 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:49" (1/1) ... [2024-11-28 04:41:49,792 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:49" (1/1) ... [2024-11-28 04:41:49,800 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:49" (1/1) ... [2024-11-28 04:41:49,805 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:49" (1/1) ... [2024-11-28 04:41:49,806 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:49" (1/1) ... [2024-11-28 04:41:49,814 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:41:49,815 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:41:49,815 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:41:49,815 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:41:49,816 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:49" (1/1) ... [2024-11-28 04:41:49,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:41:49,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:41:49,864 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:41:49,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:41:49,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:41:49,894 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 04:41:49,894 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 04:41:49,894 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 04:41:49,895 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 04:41:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:41:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:41:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:41:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:41:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:41:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:41:49,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:41:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:41:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:41:49,898 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 04:41:49,997 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:41:49,998 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:41:50,486 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:41:50,486 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:41:50,882 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:41:50,885 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 04:41:50,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:41:50 BoogieIcfgContainer [2024-11-28 04:41:50,886 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:41:50,888 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:41:50,891 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:41:50,896 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:41:50,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:41:49" (1/3) ... [2024-11-28 04:41:50,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb23914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:41:50, skipping insertion in model container [2024-11-28 04:41:50,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:41:49" (2/3) ... [2024-11-28 04:41:50,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb23914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:41:50, skipping insertion in model container [2024-11-28 04:41:50,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:41:50" (3/3) ... [2024-11-28 04:41:50,901 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2024-11-28 04:41:50,920 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:41:50,922 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-counter-queue.wvr.c that has 3 procedures, 64 locations, 1 initial locations, 3 loop locations, and 18 error locations. [2024-11-28 04:41:50,922 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:41:51,005 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 04:41:51,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions, 154 flow [2024-11-28 04:41:51,121 INFO L124 PetriNetUnfolderBase]: 7/68 cut-off events. [2024-11-28 04:41:51,124 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 04:41:51,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 68 events. 7/68 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 193 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2024-11-28 04:41:51,129 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 70 transitions, 154 flow [2024-11-28 04:41:51,133 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 66 transitions, 141 flow [2024-11-28 04:41:51,142 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:41:51,155 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;@5825331b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:41:51,155 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-11-28 04:41:51,159 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:41:51,160 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-28 04:41:51,160 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:41:51,160 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:41:51,161 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:41:51,161 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:41:51,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:51,168 INFO L85 PathProgramCache]: Analyzing trace with hash 524405, now seen corresponding path program 1 times [2024-11-28 04:41:51,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:51,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938938895] [2024-11-28 04:41:51,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:51,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:51,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:51,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:41:51,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:51,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938938895] [2024-11-28 04:41:51,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938938895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:41:51,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:41:51,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:41:51,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927607398] [2024-11-28 04:41:51,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:41:51,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:41:51,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:51,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:41:51,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:41:51,619 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-11-28 04:41:51,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2024-11-28 04:41:51,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:41:51,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-11-28 04:41:51,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:41:52,119 INFO L124 PetriNetUnfolderBase]: 341/925 cut-off events. [2024-11-28 04:41:52,120 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-28 04:41:52,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1487 conditions, 925 events. 341/925 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6065 event pairs, 222 based on Foata normal form. 1/720 useless extension candidates. Maximal degree in co-relation 1411. Up to 531 conditions per place. [2024-11-28 04:41:52,139 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 30 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2024-11-28 04:41:52,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 69 transitions, 215 flow [2024-11-28 04:41:52,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:41:52,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:41:52,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 184 transitions. [2024-11-28 04:41:52,163 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2024-11-28 04:41:52,166 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 141 flow. Second operand 4 states and 184 transitions. [2024-11-28 04:41:52,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 69 transitions, 215 flow [2024-11-28 04:41:52,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 69 transitions, 210 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 04:41:52,185 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 165 flow [2024-11-28 04:41:52,190 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2024-11-28 04:41:52,196 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2024-11-28 04:41:52,198 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 165 flow [2024-11-28 04:41:52,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2024-11-28 04:41:52,199 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:41:52,199 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 04:41:52,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:41:52,200 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:41:52,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:52,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1556814644, now seen corresponding path program 1 times [2024-11-28 04:41:52,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:52,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097390728] [2024-11-28 04:41:52,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:52,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:52,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:41:52,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:52,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097390728] [2024-11-28 04:41:52,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097390728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:41:52,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124196502] [2024-11-28 04:41:52,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:52,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:52,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:41:52,516 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:41:52,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:41:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:52,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:41:52,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:41:52,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:41:52,701 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:41:52,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124196502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:41:52,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:41:52,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:41:52,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139837798] [2024-11-28 04:41:52,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:41:52,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:41:52,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:52,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:41:52,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:41:52,728 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-11-28 04:41:52,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 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) [2024-11-28 04:41:52,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:41:52,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-11-28 04:41:52,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:41:53,103 INFO L124 PetriNetUnfolderBase]: 341/924 cut-off events. [2024-11-28 04:41:53,103 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-28 04:41:53,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1488 conditions, 924 events. 341/924 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6056 event pairs, 222 based on Foata normal form. 1/720 useless extension candidates. Maximal degree in co-relation 1461. Up to 526 conditions per place. [2024-11-28 04:41:53,117 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 26 selfloop transitions, 7 changer transitions 0/68 dead transitions. [2024-11-28 04:41:53,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 227 flow [2024-11-28 04:41:53,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:41:53,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:41:53,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 256 transitions. [2024-11-28 04:41:53,122 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6095238095238096 [2024-11-28 04:41:53,123 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 165 flow. Second operand 6 states and 256 transitions. [2024-11-28 04:41:53,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 227 flow [2024-11-28 04:41:53,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 68 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:41:53,127 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 172 flow [2024-11-28 04:41:53,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=172, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2024-11-28 04:41:53,129 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places. [2024-11-28 04:41:53,130 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 172 flow [2024-11-28 04:41:53,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 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) [2024-11-28 04:41:53,131 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:41:53,132 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-28 04:41:53,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:41:53,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:53,336 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:41:53,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:53,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1016613200, now seen corresponding path program 1 times [2024-11-28 04:41:53,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:53,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633889119] [2024-11-28 04:41:53,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:53,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:53,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:41:53,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:53,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633889119] [2024-11-28 04:41:53,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633889119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:41:53,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582670932] [2024-11-28 04:41:53,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:53,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:53,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:41:53,550 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:41:53,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:41:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:53,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:41:53,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:41:53,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:41:53,695 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:41:53,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:41:53,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582670932] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:41:53,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:41:53,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-28 04:41:53,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88023684] [2024-11-28 04:41:53,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:41:53,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:41:53,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:53,770 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:41:53,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:41:53,792 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-11-28 04:41:53,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 172 flow. Second operand has 12 states, 12 states have (on average 38.083333333333336) internal successors, (457), 12 states have internal predecessors, (457), 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) [2024-11-28 04:41:53,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:41:53,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-11-28 04:41:53,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:41:54,238 INFO L124 PetriNetUnfolderBase]: 344/936 cut-off events. [2024-11-28 04:41:54,238 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-28 04:41:54,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1532 conditions, 936 events. 344/936 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 6143 event pairs, 222 based on Foata normal form. 3/732 useless extension candidates. Maximal degree in co-relation 1462. Up to 533 conditions per place. [2024-11-28 04:41:54,250 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 29 selfloop transitions, 13 changer transitions 0/77 dead transitions. [2024-11-28 04:41:54,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 77 transitions, 310 flow [2024-11-28 04:41:54,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:41:54,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 04:41:54,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 415 transitions. [2024-11-28 04:41:54,253 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5928571428571429 [2024-11-28 04:41:54,254 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 172 flow. Second operand 10 states and 415 transitions. [2024-11-28 04:41:54,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 77 transitions, 310 flow [2024-11-28 04:41:54,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 77 transitions, 264 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-28 04:41:54,261 INFO L231 Difference]: Finished difference. Result has 78 places, 77 transitions, 224 flow [2024-11-28 04:41:54,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=224, PETRI_PLACES=78, PETRI_TRANSITIONS=77} [2024-11-28 04:41:54,263 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2024-11-28 04:41:54,263 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 224 flow [2024-11-28 04:41:54,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 38.083333333333336) internal successors, (457), 12 states have internal predecessors, (457), 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) [2024-11-28 04:41:54,265 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:41:54,265 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:41:54,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:41:54,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:54,465 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:41:54,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:54,466 INFO L85 PathProgramCache]: Analyzing trace with hash -906766866, now seen corresponding path program 1 times [2024-11-28 04:41:54,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:54,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385310214] [2024-11-28 04:41:54,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:54,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:41:54,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:54,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385310214] [2024-11-28 04:41:54,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385310214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:41:54,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:41:54,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:41:54,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803973069] [2024-11-28 04:41:54,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:41:54,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:41:54,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:54,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:41:54,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:41:54,579 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-11-28 04:41:54,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:41:54,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:41:54,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-11-28 04:41:54,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:41:54,969 INFO L124 PetriNetUnfolderBase]: 628/1452 cut-off events. [2024-11-28 04:41:54,970 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-11-28 04:41:54,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2509 conditions, 1452 events. 628/1452 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9859 event pairs, 222 based on Foata normal form. 44/1202 useless extension candidates. Maximal degree in co-relation 2475. Up to 507 conditions per place. [2024-11-28 04:41:54,981 INFO L140 encePairwiseOnDemand]: 62/70 looper letters, 71 selfloop transitions, 5 changer transitions 0/106 dead transitions. [2024-11-28 04:41:54,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 106 transitions, 438 flow [2024-11-28 04:41:54,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:41:54,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:41:54,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2024-11-28 04:41:54,984 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7107142857142857 [2024-11-28 04:41:54,984 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 224 flow. Second operand 4 states and 199 transitions. [2024-11-28 04:41:54,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 106 transitions, 438 flow [2024-11-28 04:41:54,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 106 transitions, 427 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-28 04:41:54,989 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 247 flow [2024-11-28 04:41:54,989 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=247, PETRI_PLACES=81, PETRI_TRANSITIONS=79} [2024-11-28 04:41:54,990 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 15 predicate places. [2024-11-28 04:41:54,990 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 247 flow [2024-11-28 04:41:54,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:41:54,990 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:41:54,991 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:41:54,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:41:54,991 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:41:54,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:54,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1954998804, now seen corresponding path program 1 times [2024-11-28 04:41:54,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:54,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32493199] [2024-11-28 04:41:54,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:54,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:55,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:41:55,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:55,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32493199] [2024-11-28 04:41:55,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32493199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:41:55,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:41:55,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:41:55,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400100538] [2024-11-28 04:41:55,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:41:55,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:41:55,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:55,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:41:55,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:41:55,168 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 70 [2024-11-28 04:41:55,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 247 flow. Second operand has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 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) [2024-11-28 04:41:55,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:41:55,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 70 [2024-11-28 04:41:55,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:41:55,578 INFO L124 PetriNetUnfolderBase]: 511/1407 cut-off events. [2024-11-28 04:41:55,579 INFO L125 PetriNetUnfolderBase]: For 288/311 co-relation queries the response was YES. [2024-11-28 04:41:55,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2497 conditions, 1407 events. 511/1407 cut-off events. For 288/311 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 10177 event pairs, 320 based on Foata normal form. 35/1179 useless extension candidates. Maximal degree in co-relation 2461. Up to 660 conditions per place. [2024-11-28 04:41:55,592 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 66 selfloop transitions, 5 changer transitions 2/109 dead transitions. [2024-11-28 04:41:55,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 109 transitions, 459 flow [2024-11-28 04:41:55,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:41:55,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:41:55,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 258 transitions. [2024-11-28 04:41:55,594 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7371428571428571 [2024-11-28 04:41:55,594 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 247 flow. Second operand 5 states and 258 transitions. [2024-11-28 04:41:55,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 109 transitions, 459 flow [2024-11-28 04:41:55,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 109 transitions, 459 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:41:55,601 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 272 flow [2024-11-28 04:41:55,602 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2024-11-28 04:41:55,602 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 21 predicate places. [2024-11-28 04:41:55,603 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 272 flow [2024-11-28 04:41:55,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 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) [2024-11-28 04:41:55,603 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:41:55,603 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:41:55,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:41:55,603 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:41:55,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:55,604 INFO L85 PathProgramCache]: Analyzing trace with hash 298811343, now seen corresponding path program 1 times [2024-11-28 04:41:55,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:55,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350288764] [2024-11-28 04:41:55,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:55,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:55,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:41:55,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:55,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350288764] [2024-11-28 04:41:55,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350288764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:41:55,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:41:55,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:41:55,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449516375] [2024-11-28 04:41:55,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:41:55,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:41:55,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:55,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:41:55,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:41:55,757 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-11-28 04:41:55,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2024-11-28 04:41:55,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:41:55,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-11-28 04:41:55,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:41:56,174 INFO L124 PetriNetUnfolderBase]: 939/2223 cut-off events. [2024-11-28 04:41:56,175 INFO L125 PetriNetUnfolderBase]: For 817/845 co-relation queries the response was YES. [2024-11-28 04:41:56,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4442 conditions, 2223 events. 939/2223 cut-off events. For 817/845 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16373 event pairs, 343 based on Foata normal form. 80/1959 useless extension candidates. Maximal degree in co-relation 4403. Up to 804 conditions per place. [2024-11-28 04:41:56,191 INFO L140 encePairwiseOnDemand]: 62/70 looper letters, 81 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2024-11-28 04:41:56,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 116 transitions, 580 flow [2024-11-28 04:41:56,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:41:56,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:41:56,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 197 transitions. [2024-11-28 04:41:56,192 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7035714285714286 [2024-11-28 04:41:56,192 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 272 flow. Second operand 4 states and 197 transitions. [2024-11-28 04:41:56,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 116 transitions, 580 flow [2024-11-28 04:41:56,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 116 transitions, 575 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:41:56,202 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 301 flow [2024-11-28 04:41:56,205 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-11-28 04:41:56,206 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 24 predicate places. [2024-11-28 04:41:56,206 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 301 flow [2024-11-28 04:41:56,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2024-11-28 04:41:56,207 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:41:56,207 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:41:56,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:41:56,207 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:41:56,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:56,207 INFO L85 PathProgramCache]: Analyzing trace with hash 673217646, now seen corresponding path program 1 times [2024-11-28 04:41:56,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:56,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580771875] [2024-11-28 04:41:56,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:56,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:56,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:41:56,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:56,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580771875] [2024-11-28 04:41:56,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580771875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:41:56,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:41:56,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:41:56,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914487153] [2024-11-28 04:41:56,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:41:56,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:41:56,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:56,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:41:56,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:41:56,365 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 70 [2024-11-28 04:41:56,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 301 flow. Second operand has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 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) [2024-11-28 04:41:56,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:41:56,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 70 [2024-11-28 04:41:56,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:41:56,729 INFO L124 PetriNetUnfolderBase]: 581/1587 cut-off events. [2024-11-28 04:41:56,729 INFO L125 PetriNetUnfolderBase]: For 769/811 co-relation queries the response was YES. [2024-11-28 04:41:56,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3268 conditions, 1587 events. 581/1587 cut-off events. For 769/811 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11918 event pairs, 397 based on Foata normal form. 31/1420 useless extension candidates. Maximal degree in co-relation 3227. Up to 847 conditions per place. [2024-11-28 04:41:56,741 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 42 selfloop transitions, 2 changer transitions 14/94 dead transitions. [2024-11-28 04:41:56,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 94 transitions, 452 flow [2024-11-28 04:41:56,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:41:56,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:41:56,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 241 transitions. [2024-11-28 04:41:56,742 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6885714285714286 [2024-11-28 04:41:56,743 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 301 flow. Second operand 5 states and 241 transitions. [2024-11-28 04:41:56,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 94 transitions, 452 flow [2024-11-28 04:41:56,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:41:56,749 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 294 flow [2024-11-28 04:41:56,749 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-11-28 04:41:56,750 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 30 predicate places. [2024-11-28 04:41:56,750 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 294 flow [2024-11-28 04:41:56,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 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) [2024-11-28 04:41:56,750 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:41:56,750 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:41:56,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:41:56,751 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:41:56,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:56,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1841421283, now seen corresponding path program 1 times [2024-11-28 04:41:56,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:56,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343629676] [2024-11-28 04:41:56,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:56,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:57,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:41:57,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:57,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343629676] [2024-11-28 04:41:57,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343629676] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:41:57,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092753309] [2024-11-28 04:41:57,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:57,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:57,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:41:57,204 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:41:57,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:41:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:57,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 04:41:57,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:41:57,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:41:57,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-28 04:41:57,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:41:57,437 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:41:57,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-28 04:41:57,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-28 04:41:57,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:41:57,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092753309] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:41:57,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:41:57,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-28 04:41:57,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764480219] [2024-11-28 04:41:57,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:41:57,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:41:57,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:57,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:41:57,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:41:57,744 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2024-11-28 04:41:57,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 294 flow. Second operand has 13 states, 13 states have (on average 37.38461538461539) internal successors, (486), 13 states have internal predecessors, (486), 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) [2024-11-28 04:41:57,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:41:57,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2024-11-28 04:41:57,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:41:58,698 INFO L124 PetriNetUnfolderBase]: 1225/3179 cut-off events. [2024-11-28 04:41:58,698 INFO L125 PetriNetUnfolderBase]: For 1688/1779 co-relation queries the response was YES. [2024-11-28 04:41:58,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6710 conditions, 3179 events. 1225/3179 cut-off events. For 1688/1779 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 25027 event pairs, 338 based on Foata normal form. 53/2869 useless extension candidates. Maximal degree in co-relation 6680. Up to 707 conditions per place. [2024-11-28 04:41:58,724 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 103 selfloop transitions, 18 changer transitions 0/155 dead transitions. [2024-11-28 04:41:58,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 155 transitions, 816 flow [2024-11-28 04:41:58,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:41:58,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 04:41:58,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 461 transitions. [2024-11-28 04:41:58,728 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6585714285714286 [2024-11-28 04:41:58,729 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 294 flow. Second operand 10 states and 461 transitions. [2024-11-28 04:41:58,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 155 transitions, 816 flow [2024-11-28 04:41:58,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 155 transitions, 772 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-11-28 04:41:58,743 INFO L231 Difference]: Finished difference. Result has 98 places, 89 transitions, 385 flow [2024-11-28 04:41:58,743 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=385, PETRI_PLACES=98, PETRI_TRANSITIONS=89} [2024-11-28 04:41:58,745 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 32 predicate places. [2024-11-28 04:41:58,745 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 89 transitions, 385 flow [2024-11-28 04:41:58,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.38461538461539) internal successors, (486), 13 states have internal predecessors, (486), 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) [2024-11-28 04:41:58,746 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:41:58,746 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:41:58,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:41:58,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:58,947 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:41:58,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:41:58,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1249516119, now seen corresponding path program 1 times [2024-11-28 04:41:58,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:41:58,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054605002] [2024-11-28 04:41:58,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:58,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:41:59,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:59,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054605002] [2024-11-28 04:41:59,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054605002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:41:59,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362283561] [2024-11-28 04:41:59,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:59,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:59,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:41:59,268 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:41:59,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:41:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:59,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 04:41:59,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:41:59,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:41:59,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:41:59,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:41:59,462 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:41:59,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-28 04:41:59,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-28 04:41:59,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:41:59,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362283561] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:41:59,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:41:59,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-28 04:41:59,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39984953] [2024-11-28 04:41:59,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:41:59,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:41:59,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:59,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:41:59,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:41:59,680 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2024-11-28 04:41:59,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 385 flow. Second operand has 13 states, 13 states have (on average 35.53846153846154) internal successors, (462), 13 states have internal predecessors, (462), 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) [2024-11-28 04:41:59,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:41:59,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2024-11-28 04:41:59,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:00,580 INFO L124 PetriNetUnfolderBase]: 1485/3465 cut-off events. [2024-11-28 04:42:00,580 INFO L125 PetriNetUnfolderBase]: For 2650/2765 co-relation queries the response was YES. [2024-11-28 04:42:00,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7973 conditions, 3465 events. 1485/3465 cut-off events. For 2650/2765 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 26029 event pairs, 456 based on Foata normal form. 91/3212 useless extension candidates. Maximal degree in co-relation 7934. Up to 911 conditions per place. [2024-11-28 04:42:00,610 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 107 selfloop transitions, 18 changer transitions 0/156 dead transitions. [2024-11-28 04:42:00,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 156 transitions, 857 flow [2024-11-28 04:42:00,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:42:00,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 04:42:00,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 441 transitions. [2024-11-28 04:42:00,613 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-11-28 04:42:00,613 INFO L175 Difference]: Start difference. First operand has 98 places, 89 transitions, 385 flow. Second operand 10 states and 441 transitions. [2024-11-28 04:42:00,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 156 transitions, 857 flow [2024-11-28 04:42:00,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 156 transitions, 845 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-28 04:42:00,623 INFO L231 Difference]: Finished difference. Result has 105 places, 91 transitions, 435 flow [2024-11-28 04:42:00,624 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=435, PETRI_PLACES=105, PETRI_TRANSITIONS=91} [2024-11-28 04:42:00,625 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 39 predicate places. [2024-11-28 04:42:00,625 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 91 transitions, 435 flow [2024-11-28 04:42:00,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 35.53846153846154) internal successors, (462), 13 states have internal predecessors, (462), 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) [2024-11-28 04:42:00,625 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:00,626 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:00,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:42:00,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:00,830 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:42:00,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:00,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1259251657, now seen corresponding path program 1 times [2024-11-28 04:42:00,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:00,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432563952] [2024-11-28 04:42:00,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:00,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:01,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:01,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:01,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432563952] [2024-11-28 04:42:01,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432563952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:01,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317711403] [2024-11-28 04:42:01,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:01,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:01,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:01,168 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:01,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:42:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:01,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 04:42:01,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:01,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:42:01,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:42:01,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:01,389 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:42:01,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-28 04:42:01,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-28 04:42:01,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:01,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317711403] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:42:01,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:42:01,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-28 04:42:01,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071672357] [2024-11-28 04:42:01,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:42:01,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:42:01,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:01,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:42:01,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:42:01,666 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 70 [2024-11-28 04:42:01,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 91 transitions, 435 flow. Second operand has 13 states, 13 states have (on average 37.69230769230769) internal successors, (490), 13 states have internal predecessors, (490), 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) [2024-11-28 04:42:01,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:01,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 70 [2024-11-28 04:42:01,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:02,925 INFO L124 PetriNetUnfolderBase]: 2343/5937 cut-off events. [2024-11-28 04:42:02,926 INFO L125 PetriNetUnfolderBase]: For 7130/7337 co-relation queries the response was YES. [2024-11-28 04:42:02,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13860 conditions, 5937 events. 2343/5937 cut-off events. For 7130/7337 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 50218 event pairs, 608 based on Foata normal form. 131/5421 useless extension candidates. Maximal degree in co-relation 13819. Up to 1387 conditions per place. [2024-11-28 04:42:02,985 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 139 selfloop transitions, 18 changer transitions 0/194 dead transitions. [2024-11-28 04:42:02,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 194 transitions, 1369 flow [2024-11-28 04:42:02,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:42:02,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 04:42:02,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 457 transitions. [2024-11-28 04:42:02,988 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6528571428571428 [2024-11-28 04:42:02,988 INFO L175 Difference]: Start difference. First operand has 105 places, 91 transitions, 435 flow. Second operand 10 states and 457 transitions. [2024-11-28 04:42:02,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 194 transitions, 1369 flow [2024-11-28 04:42:03,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 194 transitions, 1297 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-11-28 04:42:03,008 INFO L231 Difference]: Finished difference. Result has 110 places, 100 transitions, 518 flow [2024-11-28 04:42:03,008 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=518, PETRI_PLACES=110, PETRI_TRANSITIONS=100} [2024-11-28 04:42:03,009 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 44 predicate places. [2024-11-28 04:42:03,009 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 100 transitions, 518 flow [2024-11-28 04:42:03,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.69230769230769) internal successors, (490), 13 states have internal predecessors, (490), 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) [2024-11-28 04:42:03,010 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:03,010 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:03,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:42:03,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:03,211 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:42:03,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:03,212 INFO L85 PathProgramCache]: Analyzing trace with hash -80293440, now seen corresponding path program 1 times [2024-11-28 04:42:03,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:03,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330256769] [2024-11-28 04:42:03,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:03,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:03,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:42:03,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:03,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330256769] [2024-11-28 04:42:03,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330256769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:03,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:03,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:42:03,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116786397] [2024-11-28 04:42:03,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:03,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:03,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:03,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:03,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:42:03,312 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-11-28 04:42:03,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 100 transitions, 518 flow. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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) [2024-11-28 04:42:03,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:03,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-11-28 04:42:03,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:04,229 INFO L124 PetriNetUnfolderBase]: 2693/6576 cut-off events. [2024-11-28 04:42:04,229 INFO L125 PetriNetUnfolderBase]: For 9578/9813 co-relation queries the response was YES. [2024-11-28 04:42:04,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16878 conditions, 6576 events. 2693/6576 cut-off events. For 9578/9813 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 55614 event pairs, 1059 based on Foata normal form. 203/6091 useless extension candidates. Maximal degree in co-relation 16835. Up to 2290 conditions per place. [2024-11-28 04:42:04,289 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 105 selfloop transitions, 8 changer transitions 0/145 dead transitions. [2024-11-28 04:42:04,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 145 transitions, 985 flow [2024-11-28 04:42:04,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:42:04,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:42:04,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 196 transitions. [2024-11-28 04:42:04,290 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-28 04:42:04,291 INFO L175 Difference]: Start difference. First operand has 110 places, 100 transitions, 518 flow. Second operand 4 states and 196 transitions. [2024-11-28 04:42:04,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 145 transitions, 985 flow [2024-11-28 04:42:04,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 145 transitions, 964 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-28 04:42:04,315 INFO L231 Difference]: Finished difference. Result has 108 places, 98 transitions, 500 flow [2024-11-28 04:42:04,315 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=500, PETRI_PLACES=108, PETRI_TRANSITIONS=98} [2024-11-28 04:42:04,316 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 42 predicate places. [2024-11-28 04:42:04,316 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 98 transitions, 500 flow [2024-11-28 04:42:04,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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) [2024-11-28 04:42:04,316 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:04,316 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:04,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:42:04,317 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:42:04,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:04,317 INFO L85 PathProgramCache]: Analyzing trace with hash -80294465, now seen corresponding path program 1 times [2024-11-28 04:42:04,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:04,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366420345] [2024-11-28 04:42:04,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:04,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:04,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:42:04,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:04,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366420345] [2024-11-28 04:42:04,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366420345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:04,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:04,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:42:04,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421180871] [2024-11-28 04:42:04,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:04,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:42:04,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:04,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:42:04,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:42:04,524 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-11-28 04:42:04,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 98 transitions, 500 flow. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 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) [2024-11-28 04:42:04,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:04,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-11-28 04:42:04,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:05,886 INFO L124 PetriNetUnfolderBase]: 3978/9268 cut-off events. [2024-11-28 04:42:05,886 INFO L125 PetriNetUnfolderBase]: For 12020/12363 co-relation queries the response was YES. [2024-11-28 04:42:05,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23348 conditions, 9268 events. 3978/9268 cut-off events. For 12020/12363 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 80374 event pairs, 938 based on Foata normal form. 166/8671 useless extension candidates. Maximal degree in co-relation 23309. Up to 3970 conditions per place. [2024-11-28 04:42:05,970 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 165 selfloop transitions, 16 changer transitions 0/213 dead transitions. [2024-11-28 04:42:05,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 213 transitions, 1457 flow [2024-11-28 04:42:05,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:42:05,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 04:42:05,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 357 transitions. [2024-11-28 04:42:05,973 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7285714285714285 [2024-11-28 04:42:05,973 INFO L175 Difference]: Start difference. First operand has 108 places, 98 transitions, 500 flow. Second operand 7 states and 357 transitions. [2024-11-28 04:42:05,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 213 transitions, 1457 flow [2024-11-28 04:42:05,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 213 transitions, 1437 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:42:06,001 INFO L231 Difference]: Finished difference. Result has 117 places, 111 transitions, 623 flow [2024-11-28 04:42:06,001 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=623, PETRI_PLACES=117, PETRI_TRANSITIONS=111} [2024-11-28 04:42:06,002 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 51 predicate places. [2024-11-28 04:42:06,004 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 111 transitions, 623 flow [2024-11-28 04:42:06,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 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) [2024-11-28 04:42:06,005 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:06,005 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:06,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:42:06,005 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:42:06,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:06,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1805839468, now seen corresponding path program 1 times [2024-11-28 04:42:06,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:06,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543831535] [2024-11-28 04:42:06,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:06,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:06,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:42:06,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:06,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543831535] [2024-11-28 04:42:06,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543831535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:06,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:06,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:42:06,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494581569] [2024-11-28 04:42:06,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:06,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:42:06,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:06,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:42:06,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:06,179 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2024-11-28 04:42:06,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 111 transitions, 623 flow. Second operand has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 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) [2024-11-28 04:42:06,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:06,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2024-11-28 04:42:06,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:08,153 INFO L124 PetriNetUnfolderBase]: 5162/11434 cut-off events. [2024-11-28 04:42:08,153 INFO L125 PetriNetUnfolderBase]: For 19478/20013 co-relation queries the response was YES. [2024-11-28 04:42:08,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31222 conditions, 11434 events. 5162/11434 cut-off events. For 19478/20013 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 100369 event pairs, 969 based on Foata normal form. 318/10751 useless extension candidates. Maximal degree in co-relation 31177. Up to 4317 conditions per place. [2024-11-28 04:42:08,242 INFO L140 encePairwiseOnDemand]: 58/70 looper letters, 225 selfloop transitions, 31 changer transitions 0/287 dead transitions. [2024-11-28 04:42:08,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 287 transitions, 2083 flow [2024-11-28 04:42:08,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:42:08,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 04:42:08,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 497 transitions. [2024-11-28 04:42:08,245 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6454545454545455 [2024-11-28 04:42:08,245 INFO L175 Difference]: Start difference. First operand has 117 places, 111 transitions, 623 flow. Second operand 11 states and 497 transitions. [2024-11-28 04:42:08,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 287 transitions, 2083 flow [2024-11-28 04:42:08,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 287 transitions, 2081 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-28 04:42:08,313 INFO L231 Difference]: Finished difference. Result has 130 places, 131 transitions, 843 flow [2024-11-28 04:42:08,313 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=843, PETRI_PLACES=130, PETRI_TRANSITIONS=131} [2024-11-28 04:42:08,314 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 64 predicate places. [2024-11-28 04:42:08,314 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 131 transitions, 843 flow [2024-11-28 04:42:08,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 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) [2024-11-28 04:42:08,315 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:08,315 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:08,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:42:08,315 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:42:08,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:08,316 INFO L85 PathProgramCache]: Analyzing trace with hash -382126870, now seen corresponding path program 1 times [2024-11-28 04:42:08,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:08,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494163485] [2024-11-28 04:42:08,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:08,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:08,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:08,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:08,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494163485] [2024-11-28 04:42:08,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494163485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:08,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770845272] [2024-11-28 04:42:08,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:08,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:08,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:08,615 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:08,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:42:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:08,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 04:42:08,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:08,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:42:08,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-28 04:42:08,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:08,830 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:42:08,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-28 04:42:08,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-28 04:42:08,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:08,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770845272] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:42:08,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:42:08,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-28 04:42:08,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285841669] [2024-11-28 04:42:08,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:42:08,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:42:08,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:08,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:42:08,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:42:09,034 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2024-11-28 04:42:09,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 131 transitions, 843 flow. Second operand has 13 states, 13 states have (on average 35.84615384615385) internal successors, (466), 13 states have internal predecessors, (466), 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) [2024-11-28 04:42:09,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:09,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2024-11-28 04:42:09,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:10,726 INFO L124 PetriNetUnfolderBase]: 3690/8547 cut-off events. [2024-11-28 04:42:10,726 INFO L125 PetriNetUnfolderBase]: For 20724/21147 co-relation queries the response was YES. [2024-11-28 04:42:10,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23895 conditions, 8547 events. 3690/8547 cut-off events. For 20724/21147 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 74256 event pairs, 931 based on Foata normal form. 233/7996 useless extension candidates. Maximal degree in co-relation 23845. Up to 2561 conditions per place. [2024-11-28 04:42:10,781 INFO L140 encePairwiseOnDemand]: 57/70 looper letters, 186 selfloop transitions, 18 changer transitions 0/255 dead transitions. [2024-11-28 04:42:10,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 255 transitions, 2181 flow [2024-11-28 04:42:10,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:42:10,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 04:42:10,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 437 transitions. [2024-11-28 04:42:10,783 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6242857142857143 [2024-11-28 04:42:10,783 INFO L175 Difference]: Start difference. First operand has 130 places, 131 transitions, 843 flow. Second operand 10 states and 437 transitions. [2024-11-28 04:42:10,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 255 transitions, 2181 flow [2024-11-28 04:42:10,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 255 transitions, 2163 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-11-28 04:42:10,827 INFO L231 Difference]: Finished difference. Result has 141 places, 133 transitions, 897 flow [2024-11-28 04:42:10,828 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=897, PETRI_PLACES=141, PETRI_TRANSITIONS=133} [2024-11-28 04:42:10,828 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 75 predicate places. [2024-11-28 04:42:10,829 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 133 transitions, 897 flow [2024-11-28 04:42:10,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 35.84615384615385) internal successors, (466), 13 states have internal predecessors, (466), 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) [2024-11-28 04:42:10,829 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:10,829 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:10,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 04:42:11,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 04:42:11,034 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:42:11,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:11,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1093766341, now seen corresponding path program 1 times [2024-11-28 04:42:11,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:11,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996426963] [2024-11-28 04:42:11,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:11,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:11,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:42:11,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:11,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996426963] [2024-11-28 04:42:11,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996426963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:11,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:11,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:42:11,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176794687] [2024-11-28 04:42:11,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:11,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:42:11,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:11,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:42:11,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:42:11,162 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 70 [2024-11-28 04:42:11,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 133 transitions, 897 flow. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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) [2024-11-28 04:42:11,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:11,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 70 [2024-11-28 04:42:11,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:12,567 INFO L124 PetriNetUnfolderBase]: 4053/9109 cut-off events. [2024-11-28 04:42:12,568 INFO L125 PetriNetUnfolderBase]: For 23106/23388 co-relation queries the response was YES. [2024-11-28 04:42:12,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28195 conditions, 9109 events. 4053/9109 cut-off events. For 23106/23388 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 77827 event pairs, 1543 based on Foata normal form. 212/8703 useless extension candidates. Maximal degree in co-relation 28139. Up to 3402 conditions per place. [2024-11-28 04:42:12,631 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 163 selfloop transitions, 20 changer transitions 0/226 dead transitions. [2024-11-28 04:42:12,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 226 transitions, 1832 flow [2024-11-28 04:42:12,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:42:12,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:42:12,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 279 transitions. [2024-11-28 04:42:12,633 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6642857142857143 [2024-11-28 04:42:12,633 INFO L175 Difference]: Start difference. First operand has 141 places, 133 transitions, 897 flow. Second operand 6 states and 279 transitions. [2024-11-28 04:42:12,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 226 transitions, 1832 flow [2024-11-28 04:42:12,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 226 transitions, 1738 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-11-28 04:42:12,742 INFO L231 Difference]: Finished difference. Result has 138 places, 134 transitions, 910 flow [2024-11-28 04:42:12,742 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=910, PETRI_PLACES=138, PETRI_TRANSITIONS=134} [2024-11-28 04:42:12,743 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 72 predicate places. [2024-11-28 04:42:12,743 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 134 transitions, 910 flow [2024-11-28 04:42:12,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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) [2024-11-28 04:42:12,743 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:12,743 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:12,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:42:12,743 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:42:12,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:12,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1093765316, now seen corresponding path program 1 times [2024-11-28 04:42:12,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:12,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817632582] [2024-11-28 04:42:12,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:12,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:12,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:42:12,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:12,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817632582] [2024-11-28 04:42:12,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817632582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:12,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:12,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:42:12,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111619826] [2024-11-28 04:42:12,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:12,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:12,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:12,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:12,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:42:12,969 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2024-11-28 04:42:12,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 134 transitions, 910 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2024-11-28 04:42:12,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:12,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2024-11-28 04:42:12,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:14,814 INFO L124 PetriNetUnfolderBase]: 4375/9803 cut-off events. [2024-11-28 04:42:14,814 INFO L125 PetriNetUnfolderBase]: For 23414/23668 co-relation queries the response was YES. [2024-11-28 04:42:14,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30358 conditions, 9803 events. 4375/9803 cut-off events. For 23414/23668 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 84575 event pairs, 1757 based on Foata normal form. 342/9477 useless extension candidates. Maximal degree in co-relation 30306. Up to 3858 conditions per place. [2024-11-28 04:42:14,861 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 115 selfloop transitions, 17 changer transitions 0/180 dead transitions. [2024-11-28 04:42:14,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 180 transitions, 1434 flow [2024-11-28 04:42:14,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:42:14,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:42:14,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-11-28 04:42:14,862 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2024-11-28 04:42:14,862 INFO L175 Difference]: Start difference. First operand has 138 places, 134 transitions, 910 flow. Second operand 4 states and 200 transitions. [2024-11-28 04:42:14,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 180 transitions, 1434 flow [2024-11-28 04:42:14,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 180 transitions, 1388 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-28 04:42:14,938 INFO L231 Difference]: Finished difference. Result has 139 places, 134 transitions, 925 flow [2024-11-28 04:42:14,939 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=925, PETRI_PLACES=139, PETRI_TRANSITIONS=134} [2024-11-28 04:42:14,939 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 73 predicate places. [2024-11-28 04:42:14,940 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 134 transitions, 925 flow [2024-11-28 04:42:14,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2024-11-28 04:42:14,940 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:14,940 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:14,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 04:42:14,940 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:42:14,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:14,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1038968505, now seen corresponding path program 1 times [2024-11-28 04:42:14,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:14,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719530568] [2024-11-28 04:42:14,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:14,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:15,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:42:15,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:15,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719530568] [2024-11-28 04:42:15,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719530568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:15,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:15,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:42:15,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795212533] [2024-11-28 04:42:15,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:15,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:42:15,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:15,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:42:15,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:42:15,088 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-11-28 04:42:15,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 134 transitions, 925 flow. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 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) [2024-11-28 04:42:15,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:15,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-11-28 04:42:15,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:16,549 INFO L124 PetriNetUnfolderBase]: 4854/10619 cut-off events. [2024-11-28 04:42:16,549 INFO L125 PetriNetUnfolderBase]: For 33213/33755 co-relation queries the response was YES. [2024-11-28 04:42:16,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33565 conditions, 10619 events. 4854/10619 cut-off events. For 33213/33755 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 91449 event pairs, 1188 based on Foata normal form. 356/10459 useless extension candidates. Maximal degree in co-relation 33513. Up to 5119 conditions per place. [2024-11-28 04:42:16,613 INFO L140 encePairwiseOnDemand]: 60/70 looper letters, 194 selfloop transitions, 23 changer transitions 0/260 dead transitions. [2024-11-28 04:42:16,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 260 transitions, 2282 flow [2024-11-28 04:42:16,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:42:16,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 04:42:16,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 353 transitions. [2024-11-28 04:42:16,615 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7204081632653061 [2024-11-28 04:42:16,615 INFO L175 Difference]: Start difference. First operand has 139 places, 134 transitions, 925 flow. Second operand 7 states and 353 transitions. [2024-11-28 04:42:16,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 260 transitions, 2282 flow [2024-11-28 04:42:16,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 260 transitions, 2239 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:42:16,686 INFO L231 Difference]: Finished difference. Result has 148 places, 145 transitions, 1068 flow [2024-11-28 04:42:16,686 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1068, PETRI_PLACES=148, PETRI_TRANSITIONS=145} [2024-11-28 04:42:16,687 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 82 predicate places. [2024-11-28 04:42:16,687 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 145 transitions, 1068 flow [2024-11-28 04:42:16,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 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) [2024-11-28 04:42:16,687 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:16,687 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:16,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 04:42:16,687 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:42:16,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:16,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1038969530, now seen corresponding path program 1 times [2024-11-28 04:42:16,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:16,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820030777] [2024-11-28 04:42:16,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:16,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:16,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:42:16,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:16,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820030777] [2024-11-28 04:42:16,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820030777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:16,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:16,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:42:16,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790330948] [2024-11-28 04:42:16,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:16,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:16,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:16,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:16,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:42:16,768 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 70 [2024-11-28 04:42:16,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 145 transitions, 1068 flow. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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) [2024-11-28 04:42:16,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:16,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 70 [2024-11-28 04:42:16,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:17,931 INFO L124 PetriNetUnfolderBase]: 3876/9219 cut-off events. [2024-11-28 04:42:17,931 INFO L125 PetriNetUnfolderBase]: For 28627/29045 co-relation queries the response was YES. [2024-11-28 04:42:17,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30318 conditions, 9219 events. 3876/9219 cut-off events. For 28627/29045 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 82397 event pairs, 1420 based on Foata normal form. 386/9141 useless extension candidates. Maximal degree in co-relation 30260. Up to 3214 conditions per place. [2024-11-28 04:42:17,999 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 152 selfloop transitions, 14 changer transitions 0/220 dead transitions. [2024-11-28 04:42:17,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 220 transitions, 2033 flow [2024-11-28 04:42:17,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:42:18,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:42:18,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 194 transitions. [2024-11-28 04:42:18,000 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6928571428571428 [2024-11-28 04:42:18,000 INFO L175 Difference]: Start difference. First operand has 148 places, 145 transitions, 1068 flow. Second operand 4 states and 194 transitions. [2024-11-28 04:42:18,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 220 transitions, 2033 flow [2024-11-28 04:42:18,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 220 transitions, 2025 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-28 04:42:18,099 INFO L231 Difference]: Finished difference. Result has 150 places, 143 transitions, 1071 flow [2024-11-28 04:42:18,099 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1071, PETRI_PLACES=150, PETRI_TRANSITIONS=143} [2024-11-28 04:42:18,099 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 84 predicate places. [2024-11-28 04:42:18,099 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 143 transitions, 1071 flow [2024-11-28 04:42:18,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 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) [2024-11-28 04:42:18,099 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:18,099 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-28 04:42:18,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 04:42:18,100 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:42:18,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:18,100 INFO L85 PathProgramCache]: Analyzing trace with hash -197781785, now seen corresponding path program 2 times [2024-11-28 04:42:18,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:18,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570443085] [2024-11-28 04:42:18,100 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:42:18,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:18,118 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:42:18,119 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:42:18,164 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:42:18,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:18,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570443085] [2024-11-28 04:42:18,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570443085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:18,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103442852] [2024-11-28 04:42:18,164 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:42:18,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:18,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:18,170 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:18,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:42:18,246 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:42:18,246 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:42:18,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:42:18,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:18,278 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:42:18,278 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:42:18,305 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:42:18,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103442852] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:42:18,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:42:18,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-28 04:42:18,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180393726] [2024-11-28 04:42:18,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:42:18,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:18,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:18,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:18,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:42:18,313 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-11-28 04:42:18,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 143 transitions, 1071 flow. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-11-28 04:42:18,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:18,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-11-28 04:42:18,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:19,585 INFO L124 PetriNetUnfolderBase]: 3060/8197 cut-off events. [2024-11-28 04:42:19,585 INFO L125 PetriNetUnfolderBase]: For 24738/25067 co-relation queries the response was YES. [2024-11-28 04:42:19,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26683 conditions, 8197 events. 3060/8197 cut-off events. For 24738/25067 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 77164 event pairs, 1992 based on Foata normal form. 195/7924 useless extension candidates. Maximal degree in co-relation 26630. Up to 4734 conditions per place. [2024-11-28 04:42:19,645 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 65 selfloop transitions, 15 changer transitions 0/142 dead transitions. [2024-11-28 04:42:19,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 142 transitions, 1221 flow [2024-11-28 04:42:19,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:42:19,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:42:19,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 178 transitions. [2024-11-28 04:42:19,647 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2024-11-28 04:42:19,647 INFO L175 Difference]: Start difference. First operand has 150 places, 143 transitions, 1071 flow. Second operand 4 states and 178 transitions. [2024-11-28 04:42:19,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 142 transitions, 1221 flow [2024-11-28 04:42:19,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 142 transitions, 1191 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-11-28 04:42:19,725 INFO L231 Difference]: Finished difference. Result has 146 places, 142 transitions, 1061 flow [2024-11-28 04:42:19,725 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1061, PETRI_PLACES=146, PETRI_TRANSITIONS=142} [2024-11-28 04:42:19,726 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 80 predicate places. [2024-11-28 04:42:19,726 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 142 transitions, 1061 flow [2024-11-28 04:42:19,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2024-11-28 04:42:19,726 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:19,726 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:19,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 04:42:19,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:19,931 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:42:19,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:19,931 INFO L85 PathProgramCache]: Analyzing trace with hash 275487911, now seen corresponding path program 1 times [2024-11-28 04:42:19,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:19,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513743668] [2024-11-28 04:42:19,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:19,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:20,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:42:20,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:20,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513743668] [2024-11-28 04:42:20,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513743668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:20,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:20,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:42:20,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277447458] [2024-11-28 04:42:20,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:20,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:20,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:20,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:20,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:42:20,048 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2024-11-28 04:42:20,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 142 transitions, 1061 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2024-11-28 04:42:20,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:20,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2024-11-28 04:42:20,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:21,739 INFO L124 PetriNetUnfolderBase]: 4288/9371 cut-off events. [2024-11-28 04:42:21,739 INFO L125 PetriNetUnfolderBase]: For 29405/29862 co-relation queries the response was YES. [2024-11-28 04:42:21,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31185 conditions, 9371 events. 4288/9371 cut-off events. For 29405/29862 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 79978 event pairs, 2218 based on Foata normal form. 375/9332 useless extension candidates. Maximal degree in co-relation 31066. Up to 5129 conditions per place. [2024-11-28 04:42:21,817 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 138 selfloop transitions, 8 changer transitions 0/197 dead transitions. [2024-11-28 04:42:21,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 197 transitions, 1727 flow [2024-11-28 04:42:21,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:42:21,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:42:21,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-11-28 04:42:21,818 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.725 [2024-11-28 04:42:21,819 INFO L175 Difference]: Start difference. First operand has 146 places, 142 transitions, 1061 flow. Second operand 4 states and 203 transitions. [2024-11-28 04:42:21,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 197 transitions, 1727 flow [2024-11-28 04:42:21,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 197 transitions, 1691 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 04:42:21,908 INFO L231 Difference]: Finished difference. Result has 147 places, 143 transitions, 1072 flow [2024-11-28 04:42:21,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1072, PETRI_PLACES=147, PETRI_TRANSITIONS=143} [2024-11-28 04:42:21,909 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 81 predicate places. [2024-11-28 04:42:21,909 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 143 transitions, 1072 flow [2024-11-28 04:42:21,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2024-11-28 04:42:21,910 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:21,910 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:21,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 04:42:21,910 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:42:21,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:21,911 INFO L85 PathProgramCache]: Analyzing trace with hash 2143253197, now seen corresponding path program 1 times [2024-11-28 04:42:21,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:21,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530975233] [2024-11-28 04:42:21,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:21,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:22,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:42:22,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:22,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530975233] [2024-11-28 04:42:22,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530975233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:22,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:22,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:42:22,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661446886] [2024-11-28 04:42:22,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:22,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:42:22,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:22,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:42:22,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:22,064 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2024-11-28 04:42:22,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 143 transitions, 1072 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) [2024-11-28 04:42:22,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:22,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2024-11-28 04:42:22,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:24,009 INFO L124 PetriNetUnfolderBase]: 6301/12880 cut-off events. [2024-11-28 04:42:24,009 INFO L125 PetriNetUnfolderBase]: For 52765/53581 co-relation queries the response was YES. [2024-11-28 04:42:24,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44429 conditions, 12880 events. 6301/12880 cut-off events. For 52765/53581 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 109484 event pairs, 1278 based on Foata normal form. 575/12786 useless extension candidates. Maximal degree in co-relation 44325. Up to 5666 conditions per place. [2024-11-28 04:42:24,106 INFO L140 encePairwiseOnDemand]: 58/70 looper letters, 268 selfloop transitions, 38 changer transitions 0/345 dead transitions. [2024-11-28 04:42:24,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 345 transitions, 3197 flow [2024-11-28 04:42:24,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:42:24,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 04:42:24,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 495 transitions. [2024-11-28 04:42:24,108 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-28 04:42:24,108 INFO L175 Difference]: Start difference. First operand has 147 places, 143 transitions, 1072 flow. Second operand 11 states and 495 transitions. [2024-11-28 04:42:24,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 345 transitions, 3197 flow [2024-11-28 04:42:24,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 345 transitions, 3177 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-11-28 04:42:24,285 INFO L231 Difference]: Finished difference. Result has 160 places, 163 transitions, 1348 flow [2024-11-28 04:42:24,285 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1348, PETRI_PLACES=160, PETRI_TRANSITIONS=163} [2024-11-28 04:42:24,286 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 94 predicate places. [2024-11-28 04:42:24,286 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 163 transitions, 1348 flow [2024-11-28 04:42:24,286 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) [2024-11-28 04:42:24,286 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:24,286 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:24,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 04:42:24,286 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:42:24,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:24,287 INFO L85 PathProgramCache]: Analyzing trace with hash -996174590, now seen corresponding path program 1 times [2024-11-28 04:42:24,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:24,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040129390] [2024-11-28 04:42:24,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:24,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:24,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:42:24,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:24,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040129390] [2024-11-28 04:42:24,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040129390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:24,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:24,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:42:24,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958297377] [2024-11-28 04:42:24,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:24,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:24,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:24,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:24,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:42:24,334 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-11-28 04:42:24,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 163 transitions, 1348 flow. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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) [2024-11-28 04:42:24,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:24,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-11-28 04:42:24,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:25,489 INFO L124 PetriNetUnfolderBase]: 3690/9393 cut-off events. [2024-11-28 04:42:25,489 INFO L125 PetriNetUnfolderBase]: For 37745/38181 co-relation queries the response was YES. [2024-11-28 04:42:25,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33059 conditions, 9393 events. 3690/9393 cut-off events. For 37745/38181 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 88263 event pairs, 1599 based on Foata normal form. 378/9441 useless extension candidates. Maximal degree in co-relation 32950. Up to 3233 conditions per place. [2024-11-28 04:42:25,555 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 161 selfloop transitions, 4 changer transitions 0/235 dead transitions. [2024-11-28 04:42:25,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 235 transitions, 2224 flow [2024-11-28 04:42:25,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:42:25,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:42:25,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-11-28 04:42:25,556 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2024-11-28 04:42:25,556 INFO L175 Difference]: Start difference. First operand has 160 places, 163 transitions, 1348 flow. Second operand 4 states and 216 transitions. [2024-11-28 04:42:25,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 235 transitions, 2224 flow [2024-11-28 04:42:25,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 235 transitions, 2208 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-11-28 04:42:25,676 INFO L231 Difference]: Finished difference. Result has 165 places, 164 transitions, 1359 flow [2024-11-28 04:42:25,677 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1338, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1359, PETRI_PLACES=165, PETRI_TRANSITIONS=164} [2024-11-28 04:42:25,677 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 99 predicate places. [2024-11-28 04:42:25,677 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 164 transitions, 1359 flow [2024-11-28 04:42:25,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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) [2024-11-28 04:42:25,677 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:25,677 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:25,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 04:42:25,677 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:42:25,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:25,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1331310946, now seen corresponding path program 1 times [2024-11-28 04:42:25,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:25,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828744634] [2024-11-28 04:42:25,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:25,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:25,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:42:25,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:25,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828744634] [2024-11-28 04:42:25,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828744634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:25,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:25,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:42:25,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528718468] [2024-11-28 04:42:25,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:25,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:25,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:25,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:25,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:42:25,757 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 70 [2024-11-28 04:42:25,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 164 transitions, 1359 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2024-11-28 04:42:25,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:25,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 70 [2024-11-28 04:42:25,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:27,049 INFO L124 PetriNetUnfolderBase]: 5411/11420 cut-off events. [2024-11-28 04:42:27,049 INFO L125 PetriNetUnfolderBase]: For 48854/49492 co-relation queries the response was YES. [2024-11-28 04:42:27,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42017 conditions, 11420 events. 5411/11420 cut-off events. For 48854/49492 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 97471 event pairs, 2037 based on Foata normal form. 534/11545 useless extension candidates. Maximal degree in co-relation 41905. Up to 4855 conditions per place. [2024-11-28 04:42:27,137 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 166 selfloop transitions, 17 changer transitions 0/245 dead transitions. [2024-11-28 04:42:27,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 245 transitions, 2459 flow [2024-11-28 04:42:27,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:42:27,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:42:27,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2024-11-28 04:42:27,139 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7071428571428572 [2024-11-28 04:42:27,139 INFO L175 Difference]: Start difference. First operand has 165 places, 164 transitions, 1359 flow. Second operand 4 states and 198 transitions. [2024-11-28 04:42:27,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 245 transitions, 2459 flow [2024-11-28 04:42:27,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 245 transitions, 2444 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:42:27,306 INFO L231 Difference]: Finished difference. Result has 168 places, 164 transitions, 1411 flow [2024-11-28 04:42:27,306 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1411, PETRI_PLACES=168, PETRI_TRANSITIONS=164} [2024-11-28 04:42:27,307 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 102 predicate places. [2024-11-28 04:42:27,307 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 164 transitions, 1411 flow [2024-11-28 04:42:27,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2024-11-28 04:42:27,307 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:27,307 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:27,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 04:42:27,307 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:42:27,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:27,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1331309921, now seen corresponding path program 1 times [2024-11-28 04:42:27,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:27,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810355474] [2024-11-28 04:42:27,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:27,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:27,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:42:27,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:27,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810355474] [2024-11-28 04:42:27,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810355474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:27,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:27,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:42:27,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802617595] [2024-11-28 04:42:27,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:27,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:42:27,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:27,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:42:27,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:42:27,399 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 70 [2024-11-28 04:42:27,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 164 transitions, 1411 flow. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:27,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:27,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 70 [2024-11-28 04:42:27,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:28,801 INFO L124 PetriNetUnfolderBase]: 4864/10368 cut-off events. [2024-11-28 04:42:28,801 INFO L125 PetriNetUnfolderBase]: For 50161/50732 co-relation queries the response was YES. [2024-11-28 04:42:28,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39870 conditions, 10368 events. 4864/10368 cut-off events. For 50161/50732 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 87563 event pairs, 1711 based on Foata normal form. 362/10438 useless extension candidates. Maximal degree in co-relation 39758. Up to 4217 conditions per place. [2024-11-28 04:42:28,854 INFO L140 encePairwiseOnDemand]: 63/70 looper letters, 249 selfloop transitions, 20 changer transitions 0/325 dead transitions. [2024-11-28 04:42:28,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 325 transitions, 3402 flow [2024-11-28 04:42:28,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:42:28,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:42:28,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 275 transitions. [2024-11-28 04:42:28,855 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-11-28 04:42:28,855 INFO L175 Difference]: Start difference. First operand has 168 places, 164 transitions, 1411 flow. Second operand 6 states and 275 transitions. [2024-11-28 04:42:28,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 325 transitions, 3402 flow [2024-11-28 04:42:28,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 325 transitions, 3351 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-28 04:42:28,983 INFO L231 Difference]: Finished difference. Result has 170 places, 165 transitions, 1419 flow [2024-11-28 04:42:28,984 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1331, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1419, PETRI_PLACES=170, PETRI_TRANSITIONS=165} [2024-11-28 04:42:28,984 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 104 predicate places. [2024-11-28 04:42:28,984 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 165 transitions, 1419 flow [2024-11-28 04:42:28,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:28,984 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:28,984 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:28,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 04:42:28,984 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:42:28,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:28,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1887432152, now seen corresponding path program 1 times [2024-11-28 04:42:28,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:28,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223989036] [2024-11-28 04:42:28,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:28,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:29,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:42:29,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:29,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223989036] [2024-11-28 04:42:29,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223989036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:29,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:29,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:42:29,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727484142] [2024-11-28 04:42:29,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:29,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:29,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:29,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:29,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:42:29,069 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2024-11-28 04:42:29,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 165 transitions, 1419 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2024-11-28 04:42:29,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:29,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2024-11-28 04:42:29,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:30,379 INFO L124 PetriNetUnfolderBase]: 4836/10282 cut-off events. [2024-11-28 04:42:30,379 INFO L125 PetriNetUnfolderBase]: For 52348/52954 co-relation queries the response was YES. [2024-11-28 04:42:30,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40220 conditions, 10282 events. 4836/10282 cut-off events. For 52348/52954 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 86762 event pairs, 2474 based on Foata normal form. 510/10568 useless extension candidates. Maximal degree in co-relation 40108. Up to 5897 conditions per place. [2024-11-28 04:42:30,458 INFO L140 encePairwiseOnDemand]: 65/70 looper letters, 178 selfloop transitions, 8 changer transitions 0/246 dead transitions. [2024-11-28 04:42:30,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 246 transitions, 2535 flow [2024-11-28 04:42:30,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:42:30,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:42:30,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 201 transitions. [2024-11-28 04:42:30,459 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7178571428571429 [2024-11-28 04:42:30,459 INFO L175 Difference]: Start difference. First operand has 170 places, 165 transitions, 1419 flow. Second operand 4 states and 201 transitions. [2024-11-28 04:42:30,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 246 transitions, 2535 flow [2024-11-28 04:42:30,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 246 transitions, 2495 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-28 04:42:30,590 INFO L231 Difference]: Finished difference. Result has 171 places, 166 transitions, 1426 flow [2024-11-28 04:42:30,590 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1426, PETRI_PLACES=171, PETRI_TRANSITIONS=166} [2024-11-28 04:42:30,590 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 105 predicate places. [2024-11-28 04:42:30,590 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 166 transitions, 1426 flow [2024-11-28 04:42:30,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2024-11-28 04:42:30,590 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:30,591 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:30,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 04:42:30,591 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:42:30,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:30,591 INFO L85 PathProgramCache]: Analyzing trace with hash 672780220, now seen corresponding path program 1 times [2024-11-28 04:42:30,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:30,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069443224] [2024-11-28 04:42:30,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:30,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:30,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 04:42:30,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:30,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069443224] [2024-11-28 04:42:30,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069443224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:30,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:30,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:42:30,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694712552] [2024-11-28 04:42:30,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:30,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:30,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:30,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:30,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:42:30,641 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 70 [2024-11-28 04:42:30,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 166 transitions, 1426 flow. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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) [2024-11-28 04:42:30,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:30,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 70 [2024-11-28 04:42:30,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:31,691 INFO L124 PetriNetUnfolderBase]: 3675/8616 cut-off events. [2024-11-28 04:42:31,691 INFO L125 PetriNetUnfolderBase]: For 43890/44390 co-relation queries the response was YES. [2024-11-28 04:42:31,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34081 conditions, 8616 events. 3675/8616 cut-off events. For 43890/44390 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 76077 event pairs, 1285 based on Foata normal form. 401/8952 useless extension candidates. Maximal degree in co-relation 33969. Up to 3167 conditions per place. [2024-11-28 04:42:31,781 INFO L140 encePairwiseOnDemand]: 64/70 looper letters, 171 selfloop transitions, 4 changer transitions 0/244 dead transitions. [2024-11-28 04:42:31,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 244 transitions, 2456 flow [2024-11-28 04:42:31,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:42:31,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:42:31,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2024-11-28 04:42:31,783 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2024-11-28 04:42:31,783 INFO L175 Difference]: Start difference. First operand has 171 places, 166 transitions, 1426 flow. Second operand 4 states and 214 transitions. [2024-11-28 04:42:31,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 244 transitions, 2456 flow [2024-11-28 04:42:31,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 244 transitions, 2452 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-28 04:42:31,948 INFO L231 Difference]: Finished difference. Result has 176 places, 167 transitions, 1445 flow [2024-11-28 04:42:31,948 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1445, PETRI_PLACES=176, PETRI_TRANSITIONS=167} [2024-11-28 04:42:31,949 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 110 predicate places. [2024-11-28 04:42:31,949 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 167 transitions, 1445 flow [2024-11-28 04:42:31,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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) [2024-11-28 04:42:31,949 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:31,949 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:31,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-28 04:42:31,949 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:42:31,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:31,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1376876522, now seen corresponding path program 1 times [2024-11-28 04:42:31,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:31,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970117534] [2024-11-28 04:42:31,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:31,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:32,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:32,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:32,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970117534] [2024-11-28 04:42:32,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970117534] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:32,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650299989] [2024-11-28 04:42:32,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:32,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:32,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:32,098 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:32,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:42:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:32,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:42:32,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:32,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:32,350 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:42:32,482 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:32,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650299989] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:42:32,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:42:32,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-28 04:42:32,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771334777] [2024-11-28 04:42:32,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:42:32,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:42:32,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:32,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:42:32,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:42:32,537 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2024-11-28 04:42:32,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 167 transitions, 1445 flow. Second operand has 20 states, 20 states have (on average 36.8) internal successors, (736), 20 states have internal predecessors, (736), 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) [2024-11-28 04:42:32,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:32,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2024-11-28 04:42:32,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:34,554 INFO L124 PetriNetUnfolderBase]: 5767/13658 cut-off events. [2024-11-28 04:42:34,554 INFO L125 PetriNetUnfolderBase]: For 71630/72353 co-relation queries the response was YES. [2024-11-28 04:42:34,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54872 conditions, 13658 events. 5767/13658 cut-off events. For 71630/72353 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 130627 event pairs, 2713 based on Foata normal form. 475/13997 useless extension candidates. Maximal degree in co-relation 51097. Up to 5807 conditions per place. [2024-11-28 04:42:34,668 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 256 selfloop transitions, 16 changer transitions 6/347 dead transitions. [2024-11-28 04:42:34,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 347 transitions, 3608 flow [2024-11-28 04:42:34,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:42:34,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 04:42:34,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 452 transitions. [2024-11-28 04:42:34,670 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6457142857142857 [2024-11-28 04:42:34,670 INFO L175 Difference]: Start difference. First operand has 176 places, 167 transitions, 1445 flow. Second operand 10 states and 452 transitions. [2024-11-28 04:42:34,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 347 transitions, 3608 flow [2024-11-28 04:42:34,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 347 transitions, 3593 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:42:34,973 INFO L231 Difference]: Finished difference. Result has 188 places, 172 transitions, 1537 flow [2024-11-28 04:42:34,973 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1537, PETRI_PLACES=188, PETRI_TRANSITIONS=172} [2024-11-28 04:42:34,974 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 122 predicate places. [2024-11-28 04:42:34,974 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 172 transitions, 1537 flow [2024-11-28 04:42:34,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 36.8) internal successors, (736), 20 states have internal predecessors, (736), 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) [2024-11-28 04:42:34,974 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:34,974 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:34,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:42:35,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:35,175 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:42:35,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:35,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1774037146, now seen corresponding path program 1 times [2024-11-28 04:42:35,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:35,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911941635] [2024-11-28 04:42:35,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:35,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:35,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:42:35,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:35,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911941635] [2024-11-28 04:42:35,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911941635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:35,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:35,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:42:35,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501135841] [2024-11-28 04:42:35,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:35,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:42:35,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:35,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:42:35,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:42:35,493 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2024-11-28 04:42:35,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 172 transitions, 1537 flow. Second operand has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 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) [2024-11-28 04:42:35,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:35,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2024-11-28 04:42:35,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:40,934 INFO L124 PetriNetUnfolderBase]: 16432/32467 cut-off events. [2024-11-28 04:42:40,935 INFO L125 PetriNetUnfolderBase]: For 182438/183474 co-relation queries the response was YES. [2024-11-28 04:42:41,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135335 conditions, 32467 events. 16432/32467 cut-off events. For 182438/183474 co-relation queries the response was YES. Maximal size of possible extension queue 1021. Compared 298448 event pairs, 2398 based on Foata normal form. 1200/33586 useless extension candidates. Maximal degree in co-relation 121845. Up to 8419 conditions per place. [2024-11-28 04:42:41,232 INFO L140 encePairwiseOnDemand]: 52/70 looper letters, 542 selfloop transitions, 224 changer transitions 0/803 dead transitions. [2024-11-28 04:42:41,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 803 transitions, 8544 flow [2024-11-28 04:42:41,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 04:42:41,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-28 04:42:41,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1084 transitions. [2024-11-28 04:42:41,235 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6194285714285714 [2024-11-28 04:42:41,236 INFO L175 Difference]: Start difference. First operand has 188 places, 172 transitions, 1537 flow. Second operand 25 states and 1084 transitions. [2024-11-28 04:42:41,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 803 transitions, 8544 flow [2024-11-28 04:42:42,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 803 transitions, 8517 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-28 04:42:42,655 INFO L231 Difference]: Finished difference. Result has 231 places, 397 transitions, 4964 flow [2024-11-28 04:42:42,655 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4964, PETRI_PLACES=231, PETRI_TRANSITIONS=397} [2024-11-28 04:42:42,656 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 165 predicate places. [2024-11-28 04:42:42,656 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 397 transitions, 4964 flow [2024-11-28 04:42:42,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 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) [2024-11-28 04:42:42,656 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:42:42,657 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:42,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-28 04:42:42,657 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:42:42,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:42,658 INFO L85 PathProgramCache]: Analyzing trace with hash 987458478, now seen corresponding path program 1 times [2024-11-28 04:42:42,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:42,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390372402] [2024-11-28 04:42:42,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:42,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:42,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:42:42,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:42,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390372402] [2024-11-28 04:42:42,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390372402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:42,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:42,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:42:42,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791330544] [2024-11-28 04:42:42,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:42,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:42:42,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:42,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:42:42,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:42:43,045 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 70 [2024-11-28 04:42:43,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 397 transitions, 4964 flow. Second operand has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 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) [2024-11-28 04:42:43,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:42:43,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 70 [2024-11-28 04:42:43,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:42:54,726 INFO L124 PetriNetUnfolderBase]: 26614/52277 cut-off events. [2024-11-28 04:42:54,726 INFO L125 PetriNetUnfolderBase]: For 616756/618683 co-relation queries the response was YES. [2024-11-28 04:42:55,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264637 conditions, 52277 events. 26614/52277 cut-off events. For 616756/618683 co-relation queries the response was YES. Maximal size of possible extension queue 1591. Compared 515014 event pairs, 3902 based on Foata normal form. 2241/54414 useless extension candidates. Maximal degree in co-relation 240794. Up to 15795 conditions per place. [2024-11-28 04:42:55,667 INFO L140 encePairwiseOnDemand]: 52/70 looper letters, 796 selfloop transitions, 394 changer transitions 0/1227 dead transitions. [2024-11-28 04:42:55,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 1227 transitions, 16783 flow [2024-11-28 04:42:55,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 04:42:55,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-28 04:42:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1084 transitions. [2024-11-28 04:42:55,670 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6194285714285714 [2024-11-28 04:42:55,670 INFO L175 Difference]: Start difference. First operand has 231 places, 397 transitions, 4964 flow. Second operand 25 states and 1084 transitions. [2024-11-28 04:42:55,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 1227 transitions, 16783 flow [2024-11-28 04:43:04,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 1227 transitions, 16683 flow, removed 50 selfloop flow, removed 0 redundant places. [2024-11-28 04:43:04,052 INFO L231 Difference]: Finished difference. Result has 278 places, 701 transitions, 11060 flow [2024-11-28 04:43:04,053 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=4924, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=11060, PETRI_PLACES=278, PETRI_TRANSITIONS=701} [2024-11-28 04:43:04,053 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 212 predicate places. [2024-11-28 04:43:04,053 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 701 transitions, 11060 flow [2024-11-28 04:43:04,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.5) internal successors, (252), 8 states have internal predecessors, (252), 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) [2024-11-28 04:43:04,053 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:43:04,054 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:04,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-28 04:43:04,054 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:43:04,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:04,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1632167177, now seen corresponding path program 1 times [2024-11-28 04:43:04,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:04,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366380101] [2024-11-28 04:43:04,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:04,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:04,195 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:04,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:04,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366380101] [2024-11-28 04:43:04,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366380101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:04,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350956381] [2024-11-28 04:43:04,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:04,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:04,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:04,198 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:04,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:43:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:04,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:43:04,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:04,462 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:04,462 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:04,578 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:04,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350956381] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:04,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:04,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-28 04:43:04,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571838067] [2024-11-28 04:43:04,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:04,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:43:04,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:04,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:43:04,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:43:04,634 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 70 [2024-11-28 04:43:04,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 701 transitions, 11060 flow. Second operand has 20 states, 20 states have (on average 36.9) internal successors, (738), 20 states have internal predecessors, (738), 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) [2024-11-28 04:43:04,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:43:04,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 70 [2024-11-28 04:43:04,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:43:15,325 INFO L124 PetriNetUnfolderBase]: 15935/35664 cut-off events. [2024-11-28 04:43:15,326 INFO L125 PetriNetUnfolderBase]: For 561278/564520 co-relation queries the response was YES. [2024-11-28 04:43:15,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197101 conditions, 35664 events. 15935/35664 cut-off events. For 561278/564520 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 372275 event pairs, 7721 based on Foata normal form. 1457/36811 useless extension candidates. Maximal degree in co-relation 193685. Up to 19710 conditions per place. [2024-11-28 04:43:15,872 INFO L140 encePairwiseOnDemand]: 61/70 looper letters, 460 selfloop transitions, 20 changer transitions 113/911 dead transitions. [2024-11-28 04:43:15,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 911 transitions, 15151 flow [2024-11-28 04:43:15,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:43:15,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 04:43:15,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 449 transitions. [2024-11-28 04:43:15,874 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6414285714285715 [2024-11-28 04:43:15,874 INFO L175 Difference]: Start difference. First operand has 278 places, 701 transitions, 11060 flow. Second operand 10 states and 449 transitions. [2024-11-28 04:43:15,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 911 transitions, 15151 flow [2024-11-28 04:43:23,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 911 transitions, 14805 flow, removed 173 selfloop flow, removed 0 redundant places. [2024-11-28 04:43:23,261 INFO L231 Difference]: Finished difference. Result has 291 places, 706 transitions, 10829 flow [2024-11-28 04:43:23,261 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=10686, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=679, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10829, PETRI_PLACES=291, PETRI_TRANSITIONS=706} [2024-11-28 04:43:23,262 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 225 predicate places. [2024-11-28 04:43:23,262 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 706 transitions, 10829 flow [2024-11-28 04:43:23,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 36.9) internal successors, (738), 20 states have internal predecessors, (738), 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) [2024-11-28 04:43:23,262 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:43:23,263 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:23,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 04:43:23,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:23,463 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-11-28 04:43:23,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:23,464 INFO L85 PathProgramCache]: Analyzing trace with hash -567345569, now seen corresponding path program 2 times [2024-11-28 04:43:23,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:23,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105137939] [2024-11-28 04:43:23,464 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:43:23,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:23,484 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:43:23,484 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:23,937 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:23,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:23,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105137939] [2024-11-28 04:43:23,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105137939] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:23,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345736011] [2024-11-28 04:43:23,939 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:43:23,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:23,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:23,941 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:23,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6049a63-9157-4aa7-9083-85755e8b0c03/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:43:24,042 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:43:24,042 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:43:24,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 04:43:24,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:24,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 04:43:24,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-28 04:43:24,344 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:24,344 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:24,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-28 04:43:24,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-28 04:43:24,578 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:43:24,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345736011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:24,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:24,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2024-11-28 04:43:24,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825067644] [2024-11-28 04:43:24,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:24,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 04:43:24,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:24,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 04:43:24,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:43:25,072 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 70 [2024-11-28 04:43:25,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 706 transitions, 10829 flow. Second operand has 26 states, 26 states have (on average 33.69230769230769) internal successors, (876), 26 states have internal predecessors, (876), 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) [2024-11-28 04:43:25,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:43:25,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 70 [2024-11-28 04:43:25,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand