./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya --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 4e7050d36e2131966739d0040816e49ede1f1e8b3b668f65d41876950193b1d8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:03:40,458 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:03:40,521 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 05:03:40,526 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:03:40,527 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:03:40,553 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:03:40,554 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:03:40,554 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:03:40,555 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:03:40,555 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:03:40,556 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:03:40,556 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:03:40,557 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:03:40,558 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:03:40,558 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:03:40,559 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:03:40,559 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:03:40,560 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:03:40,560 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:03:40,561 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:03:40,561 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:03:40,562 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:03:40,563 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:03:40,563 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:03:40,563 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 05:03:40,564 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 05:03:40,564 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:03:40,565 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:03:40,565 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:03:40,566 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:03:40,566 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:03:40,567 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:03:40,567 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:03:40,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:03:40,567 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:03:40,568 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:03:40,568 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:03:40,568 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:03:40,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:03:40,568 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:03:40,569 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:03:40,569 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:03:40,569 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:03:40,569 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:03:40,569 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e7050d36e2131966739d0040816e49ede1f1e8b3b668f65d41876950193b1d8 [2023-11-29 05:03:40,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:03:40,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:03:40,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:03:40,785 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:03:40,786 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:03:40,787 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2023-11-29 05:03:43,488 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:03:43,762 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:03:43,762 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2023-11-29 05:03:43,779 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/data/f2684bb13/3ffd2e22b4bc417da4c72c23bebf2f94/FLAG6c7aa3124 [2023-11-29 05:03:43,793 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/data/f2684bb13/3ffd2e22b4bc417da4c72c23bebf2f94 [2023-11-29 05:03:43,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:03:43,798 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:03:43,799 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:03:43,799 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:03:43,804 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:03:43,805 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:03:43" (1/1) ... [2023-11-29 05:03:43,806 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15093e0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:03:43, skipping insertion in model container [2023-11-29 05:03:43,806 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:03:43" (1/1) ... [2023-11-29 05:03:43,861 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:03:44,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:03:44,418 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:03:44,465 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:03:44,564 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:03:44,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:03:44 WrapperNode [2023-11-29 05:03:44,565 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:03:44,566 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:03:44,566 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:03:44,566 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:03:44,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:03:44" (1/1) ... [2023-11-29 05:03:44,592 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:03:44" (1/1) ... [2023-11-29 05:03:44,624 INFO L138 Inliner]: procedures = 279, calls = 70, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 283 [2023-11-29 05:03:44,624 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:03:44,625 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:03:44,625 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:03:44,625 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:03:44,634 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:03:44" (1/1) ... [2023-11-29 05:03:44,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:03:44" (1/1) ... [2023-11-29 05:03:44,640 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:03:44" (1/1) ... [2023-11-29 05:03:44,665 INFO L175 MemorySlicer]: Split 35 memory accesses to 8 slices as follows [2, 5, 14, 4, 5, 2, 1, 2]. 40 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 0, 0, 5, 0, 0, 0]. The 13 writes are split as follows [0, 0, 8, 2, 0, 1, 1, 1]. [2023-11-29 05:03:44,665 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:03:44" (1/1) ... [2023-11-29 05:03:44,665 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:03:44" (1/1) ... [2023-11-29 05:03:44,682 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:03:44" (1/1) ... [2023-11-29 05:03:44,686 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:03:44" (1/1) ... [2023-11-29 05:03:44,689 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:03:44" (1/1) ... [2023-11-29 05:03:44,691 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:03:44" (1/1) ... [2023-11-29 05:03:44,695 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:03:44,696 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:03:44,696 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:03:44,696 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:03:44,697 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:03:44" (1/1) ... [2023-11-29 05:03:44,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:03:44,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:03:44,723 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:03:44,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:03:44,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:03:44,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 05:03:44,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 05:03:44,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 05:03:44,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 05:03:44,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 05:03:44,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-29 05:03:44,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-29 05:03:44,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-29 05:03:44,758 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-29 05:03:44,758 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-29 05:03:44,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:03:44,758 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 05:03:44,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 05:03:44,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 05:03:44,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 05:03:44,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 05:03:44,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 05:03:44,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 05:03:44,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-29 05:03:44,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-29 05:03:44,760 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-29 05:03:44,760 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-29 05:03:44,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 05:03:44,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 05:03:44,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 05:03:44,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 05:03:44,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 05:03:44,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 05:03:44,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-29 05:03:44,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-29 05:03:44,761 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 05:03:44,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 05:03:44,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:03:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 05:03:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 05:03:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 05:03:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 05:03:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 05:03:44,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-29 05:03:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-29 05:03:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-29 05:03:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:03:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:03:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 05:03:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 05:03:44,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 05:03:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 05:03:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 05:03:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-29 05:03:44,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:03:44,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:03:44,766 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 05:03:44,964 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:03:44,967 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:03:45,337 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:03:45,596 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:03:45,596 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-29 05:03:45,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:03:45 BoogieIcfgContainer [2023-11-29 05:03:45,597 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:03:45,599 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:03:45,599 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:03:45,603 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:03:45,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:03:43" (1/3) ... [2023-11-29 05:03:45,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7e617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:03:45, skipping insertion in model container [2023-11-29 05:03:45,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:03:44" (2/3) ... [2023-11-29 05:03:45,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7e617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:03:45, skipping insertion in model container [2023-11-29 05:03:45,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:03:45" (3/3) ... [2023-11-29 05:03:45,605 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2023-11-29 05:03:45,614 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 05:03:45,624 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:03:45,625 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-29 05:03:45,625 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 05:03:45,720 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-29 05:03:45,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 100 transitions, 220 flow [2023-11-29 05:03:45,817 INFO L124 PetriNetUnfolderBase]: 35/203 cut-off events. [2023-11-29 05:03:45,818 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-29 05:03:45,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 203 events. 35/203 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 843 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 99. Up to 8 conditions per place. [2023-11-29 05:03:45,823 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 100 transitions, 220 flow [2023-11-29 05:03:45,829 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 100 transitions, 220 flow [2023-11-29 05:03:45,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:03:45,845 INFO L357 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, mHoare=true, 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;@24ab1f7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:03:45,846 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-29 05:03:45,849 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 05:03:45,849 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-29 05:03:45,850 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 05:03:45,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:03:45,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 05:03:45,851 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 05:03:45,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:03:45,856 INFO L85 PathProgramCache]: Analyzing trace with hash 753155, now seen corresponding path program 1 times [2023-11-29 05:03:45,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:03:45,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192947696] [2023-11-29 05:03:45,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:45,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:03:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:46,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:03:46,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:03:46,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192947696] [2023-11-29 05:03:46,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192947696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:03:46,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:03:46,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:03:46,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763006915] [2023-11-29 05:03:46,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:03:46,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:03:46,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:03:46,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:03:46,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:03:46,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 100 [2023-11-29 05:03:46,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 100 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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) [2023-11-29 05:03:46,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:03:46,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 100 [2023-11-29 05:03:46,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:03:47,315 INFO L124 PetriNetUnfolderBase]: 2836/5779 cut-off events. [2023-11-29 05:03:47,315 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2023-11-29 05:03:47,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10418 conditions, 5779 events. 2836/5779 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 38906 event pairs, 2635 based on Foata normal form. 403/5298 useless extension candidates. Maximal degree in co-relation 8655. Up to 4552 conditions per place. [2023-11-29 05:03:47,361 INFO L140 encePairwiseOnDemand]: 83/100 looper letters, 57 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2023-11-29 05:03:47,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 91 transitions, 322 flow [2023-11-29 05:03:47,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:03:47,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:03:47,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2023-11-29 05:03:47,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.495 [2023-11-29 05:03:47,376 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 198 transitions. [2023-11-29 05:03:47,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 198 transitions. [2023-11-29 05:03:47,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:03:47,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 198 transitions. [2023-11-29 05:03:47,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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) [2023-11-29 05:03:47,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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) [2023-11-29 05:03:47,388 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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) [2023-11-29 05:03:47,390 INFO L175 Difference]: Start difference. First operand has 87 places, 100 transitions, 220 flow. Second operand 4 states and 198 transitions. [2023-11-29 05:03:47,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 91 transitions, 322 flow [2023-11-29 05:03:47,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 91 transitions, 322 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 05:03:47,402 INFO L231 Difference]: Finished difference. Result has 92 places, 91 transitions, 222 flow [2023-11-29 05:03:47,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=92, PETRI_TRANSITIONS=91} [2023-11-29 05:03:47,408 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 5 predicate places. [2023-11-29 05:03:47,408 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 91 transitions, 222 flow [2023-11-29 05:03:47,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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) [2023-11-29 05:03:47,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:03:47,409 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 05:03:47,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:03:47,409 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 05:03:47,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:03:47,410 INFO L85 PathProgramCache]: Analyzing trace with hash 963159202, now seen corresponding path program 1 times [2023-11-29 05:03:47,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:03:47,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922995393] [2023-11-29 05:03:47,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:47,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:03:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:47,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:03:47,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:03:47,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922995393] [2023-11-29 05:03:47,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922995393] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:03:47,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594391081] [2023-11-29 05:03:47,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:47,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:03:47,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:03:47,598 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:03:47,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:03:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:47,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:03:47,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:03:47,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:03:47,844 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:03:47,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594391081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:03:47,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:03:47,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-11-29 05:03:47,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249467387] [2023-11-29 05:03:47,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:03:47,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:03:47,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:03:47,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:03:47,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:03:47,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 100 [2023-11-29 05:03:47,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 91 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:47,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:03:47,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 100 [2023-11-29 05:03:47,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:03:48,809 INFO L124 PetriNetUnfolderBase]: 2836/5778 cut-off events. [2023-11-29 05:03:48,809 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2023-11-29 05:03:48,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10430 conditions, 5778 events. 2836/5778 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 38883 event pairs, 2635 based on Foata normal form. 1/4895 useless extension candidates. Maximal degree in co-relation 10410. Up to 4547 conditions per place. [2023-11-29 05:03:48,851 INFO L140 encePairwiseOnDemand]: 95/100 looper letters, 54 selfloop transitions, 6 changer transitions 0/90 dead transitions. [2023-11-29 05:03:48,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 90 transitions, 338 flow [2023-11-29 05:03:48,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:03:48,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:03:48,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2023-11-29 05:03:48,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4475 [2023-11-29 05:03:48,853 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 179 transitions. [2023-11-29 05:03:48,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 179 transitions. [2023-11-29 05:03:48,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:03:48,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 179 transitions. [2023-11-29 05:03:48,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:48,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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) [2023-11-29 05:03:48,857 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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) [2023-11-29 05:03:48,858 INFO L175 Difference]: Start difference. First operand has 92 places, 91 transitions, 222 flow. Second operand 4 states and 179 transitions. [2023-11-29 05:03:48,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 90 transitions, 338 flow [2023-11-29 05:03:48,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 90 transitions, 336 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 05:03:48,863 INFO L231 Difference]: Finished difference. Result has 93 places, 90 transitions, 228 flow [2023-11-29 05:03:48,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=93, PETRI_TRANSITIONS=90} [2023-11-29 05:03:48,864 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 6 predicate places. [2023-11-29 05:03:48,864 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 228 flow [2023-11-29 05:03:48,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:48,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:03:48,864 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-29 05:03:48,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:03:49,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 05:03:49,065 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 05:03:49,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:03:49,066 INFO L85 PathProgramCache]: Analyzing trace with hash -206835050, now seen corresponding path program 1 times [2023-11-29 05:03:49,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:03:49,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331977190] [2023-11-29 05:03:49,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:49,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:03:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 05:03:49,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:03:49,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331977190] [2023-11-29 05:03:49,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331977190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:03:49,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:03:49,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:03:49,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200857721] [2023-11-29 05:03:49,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:03:49,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:03:49,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:03:49,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:03:49,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:03:49,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 100 [2023-11-29 05:03:49,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2023-11-29 05:03:49,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:03:49,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 100 [2023-11-29 05:03:49,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:03:50,063 INFO L124 PetriNetUnfolderBase]: 2836/5777 cut-off events. [2023-11-29 05:03:50,064 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2023-11-29 05:03:50,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10430 conditions, 5777 events. 2836/5777 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 38874 event pairs, 2635 based on Foata normal form. 1/4895 useless extension candidates. Maximal degree in co-relation 10405. Up to 4550 conditions per place. [2023-11-29 05:03:50,103 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 54 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2023-11-29 05:03:50,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 340 flow [2023-11-29 05:03:50,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:03:50,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 05:03:50,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2023-11-29 05:03:50,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-29 05:03:50,106 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 150 transitions. [2023-11-29 05:03:50,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 150 transitions. [2023-11-29 05:03:50,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:03:50,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 150 transitions. [2023-11-29 05:03:50,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.0) internal successors, (150), 3 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) [2023-11-29 05:03:50,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-11-29 05:03:50,109 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-11-29 05:03:50,109 INFO L175 Difference]: Start difference. First operand has 93 places, 90 transitions, 228 flow. Second operand 3 states and 150 transitions. [2023-11-29 05:03:50,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 340 flow [2023-11-29 05:03:50,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 89 transitions, 328 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 05:03:50,114 INFO L231 Difference]: Finished difference. Result has 91 places, 89 transitions, 220 flow [2023-11-29 05:03:50,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=91, PETRI_TRANSITIONS=89} [2023-11-29 05:03:50,115 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 4 predicate places. [2023-11-29 05:03:50,115 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 89 transitions, 220 flow [2023-11-29 05:03:50,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2023-11-29 05:03:50,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:03:50,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:03:50,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:03:50,116 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 05:03:50,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:03:50,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1199470014, now seen corresponding path program 1 times [2023-11-29 05:03:50,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:03:50,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124653903] [2023-11-29 05:03:50,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:50,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:03:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:50,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:03:50,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:03:50,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124653903] [2023-11-29 05:03:50,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124653903] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:03:50,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589114839] [2023-11-29 05:03:50,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:50,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:03:50,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:03:50,215 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:03:50,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:03:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:50,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:03:50,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:03:50,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:03:50,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:03:50,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:03:50,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589114839] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:03:50,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:03:50,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-29 05:03:50,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645206689] [2023-11-29 05:03:50,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:03:50,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:03:50,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:03:50,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:03:50,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:03:50,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 100 [2023-11-29 05:03:50,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 89 transitions, 220 flow. Second operand has 10 states, 10 states have (on average 32.4) internal successors, (324), 10 states have internal predecessors, (324), 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) [2023-11-29 05:03:50,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:03:50,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 100 [2023-11-29 05:03:50,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:03:51,362 INFO L124 PetriNetUnfolderBase]: 2836/5781 cut-off events. [2023-11-29 05:03:51,362 INFO L125 PetriNetUnfolderBase]: For 165/165 co-relation queries the response was YES. [2023-11-29 05:03:51,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10441 conditions, 5781 events. 2836/5781 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 38866 event pairs, 2635 based on Foata normal form. 2/4901 useless extension candidates. Maximal degree in co-relation 10403. Up to 4548 conditions per place. [2023-11-29 05:03:51,394 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 54 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2023-11-29 05:03:51,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 92 transitions, 360 flow [2023-11-29 05:03:51,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:03:51,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 05:03:51,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 280 transitions. [2023-11-29 05:03:51,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2023-11-29 05:03:51,397 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 280 transitions. [2023-11-29 05:03:51,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 280 transitions. [2023-11-29 05:03:51,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:03:51,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 280 transitions. [2023-11-29 05:03:51,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 40.0) internal successors, (280), 7 states have internal predecessors, (280), 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) [2023-11-29 05:03:51,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 100.0) internal successors, (800), 8 states have internal predecessors, (800), 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) [2023-11-29 05:03:51,401 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 100.0) internal successors, (800), 8 states have internal predecessors, (800), 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) [2023-11-29 05:03:51,402 INFO L175 Difference]: Start difference. First operand has 91 places, 89 transitions, 220 flow. Second operand 7 states and 280 transitions. [2023-11-29 05:03:51,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 92 transitions, 360 flow [2023-11-29 05:03:51,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 92 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 05:03:51,406 INFO L231 Difference]: Finished difference. Result has 97 places, 92 transitions, 249 flow [2023-11-29 05:03:51,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=249, PETRI_PLACES=97, PETRI_TRANSITIONS=92} [2023-11-29 05:03:51,407 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 10 predicate places. [2023-11-29 05:03:51,407 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 92 transitions, 249 flow [2023-11-29 05:03:51,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 32.4) internal successors, (324), 10 states have internal predecessors, (324), 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) [2023-11-29 05:03:51,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:03:51,408 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2023-11-29 05:03:51,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:03:51,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-29 05:03:51,609 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 05:03:51,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:03:51,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1603525090, now seen corresponding path program 2 times [2023-11-29 05:03:51,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:03:51,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443138123] [2023-11-29 05:03:51,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:51,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:03:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:51,717 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 05:03:51,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:03:51,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443138123] [2023-11-29 05:03:51,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443138123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:03:51,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:03:51,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:03:51,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137411621] [2023-11-29 05:03:51,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:03:51,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:03:51,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:03:51,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:03:51,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:03:51,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 100 [2023-11-29 05:03:51,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 92 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:51,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:03:51,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 100 [2023-11-29 05:03:51,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:03:52,451 INFO L124 PetriNetUnfolderBase]: 2730/5508 cut-off events. [2023-11-29 05:03:52,451 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2023-11-29 05:03:52,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9969 conditions, 5508 events. 2730/5508 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 36218 event pairs, 1368 based on Foata normal form. 6/4687 useless extension candidates. Maximal degree in co-relation 9926. Up to 4332 conditions per place. [2023-11-29 05:03:52,477 INFO L140 encePairwiseOnDemand]: 94/100 looper letters, 69 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2023-11-29 05:03:52,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 101 transitions, 411 flow [2023-11-29 05:03:52,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:03:52,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 05:03:52,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 194 transitions. [2023-11-29 05:03:52,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.485 [2023-11-29 05:03:52,480 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 194 transitions. [2023-11-29 05:03:52,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 194 transitions. [2023-11-29 05:03:52,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:03:52,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 194 transitions. [2023-11-29 05:03:52,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:52,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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) [2023-11-29 05:03:52,483 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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) [2023-11-29 05:03:52,483 INFO L175 Difference]: Start difference. First operand has 97 places, 92 transitions, 249 flow. Second operand 4 states and 194 transitions. [2023-11-29 05:03:52,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 101 transitions, 411 flow [2023-11-29 05:03:52,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 101 transitions, 397 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-29 05:03:52,488 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 241 flow [2023-11-29 05:03:52,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2023-11-29 05:03:52,489 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 9 predicate places. [2023-11-29 05:03:52,490 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 241 flow [2023-11-29 05:03:52,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:03:52,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:03:52,490 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:03:52,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:03:52,490 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 05:03:52,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:03:52,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1990409528, now seen corresponding path program 1 times [2023-11-29 05:03:52,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:03:52,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140725024] [2023-11-29 05:03:52,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:52,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:03:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:52,706 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:03:52,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:03:52,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140725024] [2023-11-29 05:03:52,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140725024] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:03:52,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252317167] [2023-11-29 05:03:52,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:52,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:03:52,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:03:52,709 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:03:52,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:03:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:52,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:03:52,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:03:52,968 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:03:52,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:03:53,067 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:03:53,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252317167] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:03:53,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:03:53,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-11-29 05:03:53,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271541507] [2023-11-29 05:03:53,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:03:53,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:03:53,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:03:53,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:03:53,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:03:53,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 100 [2023-11-29 05:03:53,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 241 flow. Second operand has 18 states, 18 states have (on average 32.27777777777778) internal successors, (581), 18 states have internal predecessors, (581), 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) [2023-11-29 05:03:53,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:03:53,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 100 [2023-11-29 05:03:53,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:03:54,001 INFO L124 PetriNetUnfolderBase]: 2730/5512 cut-off events. [2023-11-29 05:03:54,001 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2023-11-29 05:03:54,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10016 conditions, 5512 events. 2730/5512 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 36109 event pairs, 2563 based on Foata normal form. 4/4694 useless extension candidates. Maximal degree in co-relation 9939. Up to 4344 conditions per place. [2023-11-29 05:03:54,027 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 54 selfloop transitions, 15 changer transitions 0/98 dead transitions. [2023-11-29 05:03:54,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 98 transitions, 427 flow [2023-11-29 05:03:54,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:03:54,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 05:03:54,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 538 transitions. [2023-11-29 05:03:54,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3586666666666667 [2023-11-29 05:03:54,031 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 538 transitions. [2023-11-29 05:03:54,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 538 transitions. [2023-11-29 05:03:54,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:03:54,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 538 transitions. [2023-11-29 05:03:54,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 35.86666666666667) internal successors, (538), 15 states have internal predecessors, (538), 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) [2023-11-29 05:03:54,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 100.0) internal successors, (1600), 16 states have internal predecessors, (1600), 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) [2023-11-29 05:03:54,037 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 100.0) internal successors, (1600), 16 states have internal predecessors, (1600), 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) [2023-11-29 05:03:54,037 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 241 flow. Second operand 15 states and 538 transitions. [2023-11-29 05:03:54,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 98 transitions, 427 flow [2023-11-29 05:03:54,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 98 transitions, 421 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 05:03:54,042 INFO L231 Difference]: Finished difference. Result has 111 places, 98 transitions, 332 flow [2023-11-29 05:03:54,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=332, PETRI_PLACES=111, PETRI_TRANSITIONS=98} [2023-11-29 05:03:54,043 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 24 predicate places. [2023-11-29 05:03:54,043 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 98 transitions, 332 flow [2023-11-29 05:03:54,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 32.27777777777778) internal successors, (581), 18 states have internal predecessors, (581), 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) [2023-11-29 05:03:54,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:03:54,044 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:03:54,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:03:54,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 05:03:54,246 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 05:03:54,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:03:54,247 INFO L85 PathProgramCache]: Analyzing trace with hash 217120248, now seen corresponding path program 2 times [2023-11-29 05:03:54,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:03:54,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826355684] [2023-11-29 05:03:54,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:54,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:03:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:54,712 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:03:54,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:03:54,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826355684] [2023-11-29 05:03:54,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826355684] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:03:54,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878190404] [2023-11-29 05:03:54,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 05:03:54,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:03:54,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:03:54,714 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:03:54,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:03:54,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 05:03:54,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:03:54,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 05:03:54,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:03:55,055 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:03:55,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:03:55,343 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:03:55,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878190404] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:03:55,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:03:55,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2023-11-29 05:03:55,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043697827] [2023-11-29 05:03:55,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:03:55,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 05:03:55,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:03:55,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 05:03:55,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 05:03:55,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 100 [2023-11-29 05:03:55,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 98 transitions, 332 flow. Second operand has 34 states, 34 states have (on average 32.14705882352941) internal successors, (1093), 34 states have internal predecessors, (1093), 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) [2023-11-29 05:03:55,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 05:03:55,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 100 [2023-11-29 05:03:55,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 05:03:56,537 INFO L124 PetriNetUnfolderBase]: 2730/5534 cut-off events. [2023-11-29 05:03:56,537 INFO L125 PetriNetUnfolderBase]: For 362/362 co-relation queries the response was YES. [2023-11-29 05:03:56,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10125 conditions, 5534 events. 2730/5534 cut-off events. For 362/362 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 36098 event pairs, 2563 based on Foata normal form. 8/4720 useless extension candidates. Maximal degree in co-relation 9928. Up to 4344 conditions per place. [2023-11-29 05:03:56,557 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 54 selfloop transitions, 31 changer transitions 0/114 dead transitions. [2023-11-29 05:03:56,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 114 transitions, 646 flow [2023-11-29 05:03:56,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 05:03:56,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-29 05:03:56,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1054 transitions. [2023-11-29 05:03:56,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2023-11-29 05:03:56,562 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1054 transitions. [2023-11-29 05:03:56,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1054 transitions. [2023-11-29 05:03:56,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 05:03:56,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1054 transitions. [2023-11-29 05:03:56,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 34.0) internal successors, (1054), 31 states have internal predecessors, (1054), 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) [2023-11-29 05:03:56,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 100.0) internal successors, (3200), 32 states have internal predecessors, (3200), 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) [2023-11-29 05:03:56,572 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 100.0) internal successors, (3200), 32 states have internal predecessors, (3200), 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) [2023-11-29 05:03:56,572 INFO L175 Difference]: Start difference. First operand has 111 places, 98 transitions, 332 flow. Second operand 31 states and 1054 transitions. [2023-11-29 05:03:56,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 114 transitions, 646 flow [2023-11-29 05:03:56,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 114 transitions, 628 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-29 05:03:56,577 INFO L231 Difference]: Finished difference. Result has 145 places, 114 transitions, 555 flow [2023-11-29 05:03:56,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=555, PETRI_PLACES=145, PETRI_TRANSITIONS=114} [2023-11-29 05:03:56,577 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 58 predicate places. [2023-11-29 05:03:56,577 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 114 transitions, 555 flow [2023-11-29 05:03:56,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 32.14705882352941) internal successors, (1093), 34 states have internal predecessors, (1093), 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) [2023-11-29 05:03:56,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 05:03:56,578 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:03:56,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:03:56,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:03:56,782 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-11-29 05:03:56,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:03:56,782 INFO L85 PathProgramCache]: Analyzing trace with hash -601153672, now seen corresponding path program 3 times [2023-11-29 05:03:56,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:03:56,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681773428] [2023-11-29 05:03:56,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:56,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:03:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:57,834 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:03:57,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:03:57,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681773428] [2023-11-29 05:03:57,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681773428] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:03:57,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293119375] [2023-11-29 05:03:57,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 05:03:57,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:03:57,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:03:57,836 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:03:57,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2168c5c3-1380-43ec-8c6f-e1b708c16d22/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process