./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:12:10,906 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:12:10,955 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 07:12:10,959 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:12:10,960 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:12:10,978 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:12:10,979 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:12:10,979 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:12:10,979 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:12:10,980 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:12:10,980 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:12:10,980 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:12:10,980 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:12:10,980 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:12:10,980 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:12:10,981 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:12:10,981 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:12:10,981 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:12:10,981 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:12:10,981 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:12:10,981 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:12:10,981 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:12:10,981 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:12:10,981 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:12:10,981 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:12:10,981 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:12:10,982 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:12:10,982 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:12:10,982 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:12:10,982 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:12:10,982 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:12:10,982 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:12:10,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:12:10,982 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:12:10,982 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:12:10,982 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:12:10,983 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:12:10,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:12:10,983 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:12:10,983 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:12:10,983 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:12:10,983 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:12:10,983 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:12:10,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:12:10,983 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:12:10,983 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:12:10,984 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:12:10,984 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:12:10,984 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1 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 ! call(reach_error())) ) 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 -> b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 [2024-12-02 07:12:11,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:12:11,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:12:11,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:12:11,200 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:12:11,200 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:12:11,201 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2024-12-02 07:12:13,938 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/data/114a28be5/d62133816b70457d8aa4a772c6dd329e/FLAG4b67dd806 [2024-12-02 07:12:14,169 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:12:14,169 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2024-12-02 07:12:14,178 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/data/114a28be5/d62133816b70457d8aa4a772c6dd329e/FLAG4b67dd806 [2024-12-02 07:12:14,511 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/data/114a28be5/d62133816b70457d8aa4a772c6dd329e [2024-12-02 07:12:14,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:12:14,514 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:12:14,515 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:12:14,515 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:12:14,518 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:12:14,519 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:12:14" (1/1) ... [2024-12-02 07:12:14,519 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7682e473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:12:14, skipping insertion in model container [2024-12-02 07:12:14,520 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:12:14" (1/1) ... [2024-12-02 07:12:14,534 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:12:14,700 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c[3694,3707] [2024-12-02 07:12:14,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:12:14,721 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:12:14,745 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c[3694,3707] [2024-12-02 07:12:14,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:12:14,765 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:12:14,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:12:14 WrapperNode [2024-12-02 07:12:14,766 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:12:14,767 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:12:14,767 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:12:14,767 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:12:14,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:12:14" (1/1) ... [2024-12-02 07:12:14,779 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:12:14" (1/1) ... [2024-12-02 07:12:14,802 INFO L138 Inliner]: procedures = 26, calls = 48, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 290 [2024-12-02 07:12:14,803 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:12:14,803 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:12:14,803 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:12:14,803 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:12:14,811 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:12:14" (1/1) ... [2024-12-02 07:12:14,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:12:14" (1/1) ... [2024-12-02 07:12:14,815 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:12:14" (1/1) ... [2024-12-02 07:12:14,834 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-12-02 07:12:14,835 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:12:14" (1/1) ... [2024-12-02 07:12:14,835 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:12:14" (1/1) ... [2024-12-02 07:12:14,844 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:12:14" (1/1) ... [2024-12-02 07:12:14,845 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:12:14" (1/1) ... [2024-12-02 07:12:14,849 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:12:14" (1/1) ... [2024-12-02 07:12:14,851 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:12:14" (1/1) ... [2024-12-02 07:12:14,852 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:12:14" (1/1) ... [2024-12-02 07:12:14,855 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:12:14,856 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:12:14,856 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:12:14,856 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:12:14,857 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:12:14" (1/1) ... [2024-12-02 07:12:14,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:12:14,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:12:14,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:12:14,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:12:14,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:12:14,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 07:12:14,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 07:12:14,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 07:12:14,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 07:12:14,917 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-02 07:12:14,917 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-02 07:12:14,917 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-12-02 07:12:14,917 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-12-02 07:12:14,917 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-12-02 07:12:14,917 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-12-02 07:12:14,917 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-12-02 07:12:14,918 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-12-02 07:12:14,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:12:14,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 07:12:14,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-12-02 07:12:14,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-12-02 07:12:14,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 07:12:14,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:12:14,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:12:14,920 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 07:12:15,016 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:12:15,017 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:12:15,434 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 07:12:15,434 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:12:15,706 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:12:15,707 INFO L312 CfgBuilder]: Removed 5 assume(true) statements. [2024-12-02 07:12:15,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:12:15 BoogieIcfgContainer [2024-12-02 07:12:15,707 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:12:15,709 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:12:15,709 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:12:15,712 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:12:15,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:12:14" (1/3) ... [2024-12-02 07:12:15,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5baf2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:12:15, skipping insertion in model container [2024-12-02 07:12:15,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:12:14" (2/3) ... [2024-12-02 07:12:15,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5baf2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:12:15, skipping insertion in model container [2024-12-02 07:12:15,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:12:15" (3/3) ... [2024-12-02 07:12:15,715 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2024-12-02 07:12:15,727 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:12:15,728 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-parallel-sum-1.wvr.c that has 5 procedures, 46 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2024-12-02 07:12:15,728 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 07:12:15,784 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-12-02 07:12:15,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 54 transitions, 136 flow [2024-12-02 07:12:15,844 INFO L124 PetriNetUnfolderBase]: 9/50 cut-off events. [2024-12-02 07:12:15,846 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-12-02 07:12:15,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 50 events. 9/50 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-12-02 07:12:15,849 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 54 transitions, 136 flow [2024-12-02 07:12:15,852 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 49 transitions, 122 flow [2024-12-02 07:12:15,860 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:12:15,889 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6b18cb2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:12:15,889 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-12-02 07:12:15,905 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 07:12:15,905 INFO L124 PetriNetUnfolderBase]: 9/48 cut-off events. [2024-12-02 07:12:15,905 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-12-02 07:12:15,905 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:12:15,906 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:12:15,906 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 07:12:15,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:12:15,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1134782579, now seen corresponding path program 1 times [2024-12-02 07:12:15,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:12:15,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882248212] [2024-12-02 07:12:15,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:12:15,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:12:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:12:16,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:12:16,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:12:16,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882248212] [2024-12-02 07:12:16,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882248212] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:12:16,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:12:16,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:12:16,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989624261] [2024-12-02 07:12:16,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:12:16,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:12:16,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:12:16,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:12:16,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:12:16,120 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-12-02 07:12:16,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 122 flow. Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:12:16,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:12:16,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-12-02 07:12:16,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:12:18,164 INFO L124 PetriNetUnfolderBase]: 19897/25901 cut-off events. [2024-12-02 07:12:18,165 INFO L125 PetriNetUnfolderBase]: For 1351/1351 co-relation queries the response was YES. [2024-12-02 07:12:18,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52936 conditions, 25901 events. 19897/25901 cut-off events. For 1351/1351 co-relation queries the response was YES. Maximal size of possible extension queue 1002. Compared 129913 event pairs, 16674 based on Foata normal form. 0/22639 useless extension candidates. Maximal degree in co-relation 49449. Up to 25830 conditions per place. [2024-12-02 07:12:18,340 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 40 selfloop transitions, 0 changer transitions 0/45 dead transitions. [2024-12-02 07:12:18,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 194 flow [2024-12-02 07:12:18,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:12:18,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-12-02 07:12:18,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 62 transitions. [2024-12-02 07:12:18,350 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-12-02 07:12:18,352 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 122 flow. Second operand 2 states and 62 transitions. [2024-12-02 07:12:18,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 194 flow [2024-12-02 07:12:18,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 178 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-12-02 07:12:18,369 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 98 flow [2024-12-02 07:12:18,371 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=98, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2024-12-02 07:12:18,373 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -7 predicate places. [2024-12-02 07:12:18,374 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 98 flow [2024-12-02 07:12:18,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:12:18,374 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:12:18,374 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:12:18,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 07:12:18,374 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 07:12:18,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:12:18,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1845599765, now seen corresponding path program 1 times [2024-12-02 07:12:18,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:12:18,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100918443] [2024-12-02 07:12:18,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:12:18,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:12:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:12:18,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:12:18,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:12:18,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100918443] [2024-12-02 07:12:18,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100918443] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:12:18,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:12:18,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:12:18,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009342752] [2024-12-02 07:12:18,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:12:18,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:12:18,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:12:18,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:12:18,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:12:18,569 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-12-02 07:12:18,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:12:18,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:12:18,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-12-02 07:12:18,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:12:20,559 INFO L124 PetriNetUnfolderBase]: 31442/40868 cut-off events. [2024-12-02 07:12:20,560 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2024-12-02 07:12:20,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82330 conditions, 40868 events. 31442/40868 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 1492. Compared 223398 event pairs, 9215 based on Foata normal form. 1/35471 useless extension candidates. Maximal degree in co-relation 82327. Up to 28277 conditions per place. [2024-12-02 07:12:20,687 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 69 selfloop transitions, 5 changer transitions 1/80 dead transitions. [2024-12-02 07:12:20,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 80 transitions, 325 flow [2024-12-02 07:12:20,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:12:20,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 07:12:20,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-12-02 07:12:20,689 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6358024691358025 [2024-12-02 07:12:20,689 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 98 flow. Second operand 3 states and 103 transitions. [2024-12-02 07:12:20,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 80 transitions, 325 flow [2024-12-02 07:12:20,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 80 transitions, 325 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 07:12:20,692 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 131 flow [2024-12-02 07:12:20,693 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2024-12-02 07:12:20,693 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -4 predicate places. [2024-12-02 07:12:20,693 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 131 flow [2024-12-02 07:12:20,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:12:20,694 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:12:20,694 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:12:20,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:12:20,694 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 07:12:20,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:12:20,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1228234022, now seen corresponding path program 1 times [2024-12-02 07:12:20,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:12:20,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788885582] [2024-12-02 07:12:20,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:12:20,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:12:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:12:20,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:12:20,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:12:20,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788885582] [2024-12-02 07:12:20,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788885582] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:12:20,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:12:20,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:12:20,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114377249] [2024-12-02 07:12:20,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:12:20,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:12:20,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:12:20,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:12:20,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:12:20,980 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-12-02 07:12:20,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:12:20,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:12:20,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-12-02 07:12:20,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:12:24,338 INFO L124 PetriNetUnfolderBase]: 47144/62028 cut-off events. [2024-12-02 07:12:24,338 INFO L125 PetriNetUnfolderBase]: For 4577/4577 co-relation queries the response was YES. [2024-12-02 07:12:24,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134506 conditions, 62028 events. 47144/62028 cut-off events. For 4577/4577 co-relation queries the response was YES. Maximal size of possible extension queue 2228. Compared 357039 event pairs, 39870 based on Foata normal form. 2027/55156 useless extension candidates. Maximal degree in co-relation 134501. Up to 40409 conditions per place. [2024-12-02 07:12:24,484 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 43 selfloop transitions, 2 changer transitions 35/85 dead transitions. [2024-12-02 07:12:24,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 85 transitions, 384 flow [2024-12-02 07:12:24,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:12:24,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 07:12:24,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-12-02 07:12:24,486 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-12-02 07:12:24,486 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 131 flow. Second operand 4 states and 113 transitions. [2024-12-02 07:12:24,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 85 transitions, 384 flow [2024-12-02 07:12:24,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 85 transitions, 376 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 07:12:24,492 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 144 flow [2024-12-02 07:12:24,492 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2024-12-02 07:12:24,493 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-12-02 07:12:24,493 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 144 flow [2024-12-02 07:12:24,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:12:24,493 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:12:24,493 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:12:24,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 07:12:24,494 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 07:12:24,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:12:24,494 INFO L85 PathProgramCache]: Analyzing trace with hash 72400178, now seen corresponding path program 1 times [2024-12-02 07:12:24,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:12:24,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934746669] [2024-12-02 07:12:24,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:12:24,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:12:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:12:24,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:12:24,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:12:24,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934746669] [2024-12-02 07:12:24,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934746669] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:12:24,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493680947] [2024-12-02 07:12:24,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:12:24,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:12:24,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:12:24,690 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:12:24,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:12:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:12:24,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 07:12:24,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:12:24,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:12:24,919 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:12:24,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:12:24,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493680947] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:12:24,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:12:24,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-12-02 07:12:24,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857934513] [2024-12-02 07:12:24,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:12:24,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 07:12:24,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:12:24,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 07:12:24,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:12:24,987 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-12-02 07:12:24,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 144 flow. Second operand has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:12:24,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:12:24,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-12-02 07:12:24,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:12:28,037 INFO L124 PetriNetUnfolderBase]: 47144/62031 cut-off events. [2024-12-02 07:12:28,037 INFO L125 PetriNetUnfolderBase]: For 9178/9178 co-relation queries the response was YES. [2024-12-02 07:12:28,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134402 conditions, 62031 events. 47144/62031 cut-off events. For 9178/9178 co-relation queries the response was YES. Maximal size of possible extension queue 2228. Compared 357074 event pairs, 39870 based on Foata normal form. 2026/55158 useless extension candidates. Maximal degree in co-relation 134395. Up to 40408 conditions per place. [2024-12-02 07:12:28,432 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 75 selfloop transitions, 5 changer transitions 2/87 dead transitions. [2024-12-02 07:12:28,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 87 transitions, 408 flow [2024-12-02 07:12:28,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:12:28,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 07:12:28,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-12-02 07:12:28,433 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-12-02 07:12:28,433 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 144 flow. Second operand 6 states and 132 transitions. [2024-12-02 07:12:28,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 87 transitions, 408 flow [2024-12-02 07:12:28,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 87 transitions, 400 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-12-02 07:12:28,440 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 179 flow [2024-12-02 07:12:28,440 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-12-02 07:12:28,440 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2024-12-02 07:12:28,440 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 179 flow [2024-12-02 07:12:28,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:12:28,441 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:12:28,441 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:12:28,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:12:28,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:12:28,641 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 07:12:28,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:12:28,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1048159636, now seen corresponding path program 1 times [2024-12-02 07:12:28,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:12:28,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825174854] [2024-12-02 07:12:28,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:12:28,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:12:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:12:28,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:12:28,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:12:28,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825174854] [2024-12-02 07:12:28,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825174854] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:12:28,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504952995] [2024-12-02 07:12:28,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:12:28,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:12:28,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:12:28,810 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:12:28,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 07:12:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:12:28,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 07:12:28,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:12:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:12:29,040 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:12:29,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:12:29,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504952995] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:12:29,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:12:29,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-12-02 07:12:29,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671015918] [2024-12-02 07:12:29,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:12:29,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 07:12:29,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:12:29,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 07:12:29,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:12:29,112 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-12-02 07:12:29,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 179 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:12:29,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:12:29,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-12-02 07:12:29,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:12:31,311 INFO L124 PetriNetUnfolderBase]: 35526/46748 cut-off events. [2024-12-02 07:12:31,311 INFO L125 PetriNetUnfolderBase]: For 11625/11625 co-relation queries the response was YES. [2024-12-02 07:12:31,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104805 conditions, 46748 events. 35526/46748 cut-off events. For 11625/11625 co-relation queries the response was YES. Maximal size of possible extension queue 1639. Compared 259451 event pairs, 29704 based on Foata normal form. 611/40786 useless extension candidates. Maximal degree in co-relation 104796. Up to 40408 conditions per place. [2024-12-02 07:12:31,497 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 42 selfloop transitions, 4 changer transitions 29/80 dead transitions. [2024-12-02 07:12:31,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 80 transitions, 387 flow [2024-12-02 07:12:31,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:12:31,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 07:12:31,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-12-02 07:12:31,499 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39197530864197533 [2024-12-02 07:12:31,499 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 179 flow. Second operand 6 states and 127 transitions. [2024-12-02 07:12:31,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 80 transitions, 387 flow [2024-12-02 07:12:31,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 80 transitions, 372 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-12-02 07:12:31,510 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 162 flow [2024-12-02 07:12:31,511 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2024-12-02 07:12:31,511 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2024-12-02 07:12:31,511 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 162 flow [2024-12-02 07:12:31,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:12:31,511 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:12:31,512 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:12:31,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 07:12:31,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:12:31,712 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 07:12:31,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:12:31,713 INFO L85 PathProgramCache]: Analyzing trace with hash -474937788, now seen corresponding path program 2 times [2024-12-02 07:12:31,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:12:31,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670030943] [2024-12-02 07:12:31,713 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 07:12:31,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:12:31,909 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 07:12:31,909 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:12:32,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:12:32,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:12:32,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670030943] [2024-12-02 07:12:32,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670030943] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:12:32,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:12:32,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:12:32,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262731] [2024-12-02 07:12:32,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:12:32,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:12:32,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:12:32,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:12:32,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:12:32,005 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-12-02 07:12:32,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:12:32,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:12:32,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-12-02 07:12:32,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:12:37,039 INFO L124 PetriNetUnfolderBase]: 70326/91172 cut-off events. [2024-12-02 07:12:37,040 INFO L125 PetriNetUnfolderBase]: For 15130/15130 co-relation queries the response was YES. [2024-12-02 07:12:37,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207348 conditions, 91172 events. 70326/91172 cut-off events. For 15130/15130 co-relation queries the response was YES. Maximal size of possible extension queue 3002. Compared 532944 event pairs, 19932 based on Foata normal form. 1/79476 useless extension candidates. Maximal degree in co-relation 207338. Up to 31389 conditions per place. [2024-12-02 07:12:37,387 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 112 selfloop transitions, 8 changer transitions 1/126 dead transitions. [2024-12-02 07:12:37,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 126 transitions, 620 flow [2024-12-02 07:12:37,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:12:37,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 07:12:37,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2024-12-02 07:12:37,388 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-12-02 07:12:37,389 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 162 flow. Second operand 4 states and 144 transitions. [2024-12-02 07:12:37,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 126 transitions, 620 flow [2024-12-02 07:12:37,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 126 transitions, 608 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-12-02 07:12:37,397 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 226 flow [2024-12-02 07:12:37,397 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-12-02 07:12:37,397 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2024-12-02 07:12:37,398 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 226 flow [2024-12-02 07:12:37,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:12:37,398 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:12:37,398 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:12:37,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 07:12:37,398 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 07:12:37,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:12:37,399 INFO L85 PathProgramCache]: Analyzing trace with hash -211421624, now seen corresponding path program 2 times [2024-12-02 07:12:37,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:12:37,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878878807] [2024-12-02 07:12:37,399 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 07:12:37,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:12:37,417 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 07:12:37,417 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:12:37,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:12:37,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:12:37,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878878807] [2024-12-02 07:12:37,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878878807] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:12:37,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:12:37,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:12:37,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242495192] [2024-12-02 07:12:37,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:12:37,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:12:37,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:12:37,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:12:37,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:12:37,505 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-12-02 07:12:37,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:12:37,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:12:37,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-12-02 07:12:37,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:12:43,414 INFO L124 PetriNetUnfolderBase]: 80077/103811 cut-off events. [2024-12-02 07:12:43,414 INFO L125 PetriNetUnfolderBase]: For 51465/51465 co-relation queries the response was YES. [2024-12-02 07:12:43,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255355 conditions, 103811 events. 80077/103811 cut-off events. For 51465/51465 co-relation queries the response was YES. Maximal size of possible extension queue 3433. Compared 608110 event pairs, 14876 based on Foata normal form. 1/90182 useless extension candidates. Maximal degree in co-relation 255344. Up to 82350 conditions per place. [2024-12-02 07:12:43,781 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 100 selfloop transitions, 9 changer transitions 6/120 dead transitions. [2024-12-02 07:12:43,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 120 transitions, 640 flow [2024-12-02 07:12:43,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:12:43,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 07:12:43,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-12-02 07:12:43,783 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6342592592592593 [2024-12-02 07:12:43,783 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 226 flow. Second operand 4 states and 137 transitions. [2024-12-02 07:12:43,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 120 transitions, 640 flow [2024-12-02 07:12:44,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 120 transitions, 604 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-12-02 07:12:44,616 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 279 flow [2024-12-02 07:12:44,616 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=279, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2024-12-02 07:12:44,617 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 12 predicate places. [2024-12-02 07:12:44,617 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 279 flow [2024-12-02 07:12:44,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:12:44,617 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:12:44,617 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:12:44,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 07:12:44,617 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 07:12:44,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:12:44,618 INFO L85 PathProgramCache]: Analyzing trace with hash 454375453, now seen corresponding path program 1 times [2024-12-02 07:12:44,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:12:44,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946921604] [2024-12-02 07:12:44,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:12:44,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:12:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:12:45,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:12:45,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:12:45,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946921604] [2024-12-02 07:12:45,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946921604] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:12:45,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270746134] [2024-12-02 07:12:45,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:12:45,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:12:45,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:12:45,443 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:12:45,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 07:12:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:12:45,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 07:12:45,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:12:45,840 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 07:12:45,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2024-12-02 07:12:46,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 07:12:46,061 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:12:46,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:12:46,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270746134] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 07:12:46,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:12:46,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 8] total 20 [2024-12-02 07:12:46,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772400811] [2024-12-02 07:12:46,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:12:46,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:12:46,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:12:46,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:12:46,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-12-02 07:12:46,265 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-12-02 07:12:46,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 279 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:12:46,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:12:46,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-12-02 07:12:46,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:12:55,593 INFO L124 PetriNetUnfolderBase]: 121854/158021 cut-off events. [2024-12-02 07:12:55,593 INFO L125 PetriNetUnfolderBase]: For 71432/71432 co-relation queries the response was YES. [2024-12-02 07:12:55,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384270 conditions, 158021 events. 121854/158021 cut-off events. For 71432/71432 co-relation queries the response was YES. Maximal size of possible extension queue 5135. Compared 962486 event pairs, 8707 based on Foata normal form. 2/136118 useless extension candidates. Maximal degree in co-relation 384258. Up to 99316 conditions per place. [2024-12-02 07:12:56,316 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 239 selfloop transitions, 68 changer transitions 10/322 dead transitions. [2024-12-02 07:12:56,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 322 transitions, 1707 flow [2024-12-02 07:12:56,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 07:12:56,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-12-02 07:12:56,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 394 transitions. [2024-12-02 07:12:56,318 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6080246913580247 [2024-12-02 07:12:56,318 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 279 flow. Second operand 12 states and 394 transitions. [2024-12-02 07:12:56,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 322 transitions, 1707 flow [2024-12-02 07:12:56,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 322 transitions, 1691 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-12-02 07:12:56,605 INFO L231 Difference]: Finished difference. Result has 81 places, 126 transitions, 832 flow [2024-12-02 07:12:56,605 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=832, PETRI_PLACES=81, PETRI_TRANSITIONS=126} [2024-12-02 07:12:56,606 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 28 predicate places. [2024-12-02 07:12:56,606 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 126 transitions, 832 flow [2024-12-02 07:12:56,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:12:56,606 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:12:56,606 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:12:56,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 07:12:56,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:12:56,807 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 07:12:56,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:12:56,807 INFO L85 PathProgramCache]: Analyzing trace with hash 980982707, now seen corresponding path program 1 times [2024-12-02 07:12:56,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:12:56,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284933250] [2024-12-02 07:12:56,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:12:56,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:12:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:12:57,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:12:57,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:12:57,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284933250] [2024-12-02 07:12:57,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284933250] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:12:57,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569957326] [2024-12-02 07:12:57,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:12:57,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:12:57,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:12:57,495 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:12:57,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 07:12:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:12:57,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 07:12:57,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:12:58,012 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 07:12:58,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2024-12-02 07:12:58,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:12:58,120 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:12:58,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:12:58,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569957326] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 07:12:58,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:12:58,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 23 [2024-12-02 07:12:58,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995419222] [2024-12-02 07:12:58,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:12:58,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:12:58,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:12:58,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:12:58,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2024-12-02 07:12:58,460 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-12-02 07:12:58,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 126 transitions, 832 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:12:58,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:12:58,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-12-02 07:12:58,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:13:10,261 INFO L124 PetriNetUnfolderBase]: 138890/180066 cut-off events. [2024-12-02 07:13:10,261 INFO L125 PetriNetUnfolderBase]: For 172495/172495 co-relation queries the response was YES. [2024-12-02 07:13:10,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491135 conditions, 180066 events. 138890/180066 cut-off events. For 172495/172495 co-relation queries the response was YES. Maximal size of possible extension queue 5755. Compared 1110798 event pairs, 17650 based on Foata normal form. 1/154436 useless extension candidates. Maximal degree in co-relation 491117. Up to 147593 conditions per place. [2024-12-02 07:13:11,302 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 252 selfloop transitions, 48 changer transitions 8/313 dead transitions. [2024-12-02 07:13:11,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 313 transitions, 2058 flow [2024-12-02 07:13:11,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 07:13:11,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 07:13:11,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 319 transitions. [2024-12-02 07:13:11,303 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5907407407407408 [2024-12-02 07:13:11,303 INFO L175 Difference]: Start difference. First operand has 81 places, 126 transitions, 832 flow. Second operand 10 states and 319 transitions. [2024-12-02 07:13:11,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 313 transitions, 2058 flow [2024-12-02 07:13:18,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 313 transitions, 1949 flow, removed 41 selfloop flow, removed 2 redundant places. [2024-12-02 07:13:18,152 INFO L231 Difference]: Finished difference. Result has 94 places, 161 transitions, 1201 flow [2024-12-02 07:13:18,152 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1201, PETRI_PLACES=94, PETRI_TRANSITIONS=161} [2024-12-02 07:13:18,153 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 41 predicate places. [2024-12-02 07:13:18,153 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 161 transitions, 1201 flow [2024-12-02 07:13:18,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:13:18,153 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:13:18,153 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:13:18,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 07:13:18,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:13:18,354 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 07:13:18,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:13:18,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1658113567, now seen corresponding path program 2 times [2024-12-02 07:13:18,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:13:18,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975599314] [2024-12-02 07:13:18,354 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 07:13:18,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:13:18,378 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 07:13:18,378 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:13:18,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:13:18,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:13:18,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975599314] [2024-12-02 07:13:18,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975599314] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:13:18,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:13:18,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:13:18,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592674425] [2024-12-02 07:13:18,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:13:18,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:13:18,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:13:18,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:13:18,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:13:18,601 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-12-02 07:13:18,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 161 transitions, 1201 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:13:18,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:13:18,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-12-02 07:13:18,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:13:32,094 INFO L124 PetriNetUnfolderBase]: 148500/192520 cut-off events. [2024-12-02 07:13:32,095 INFO L125 PetriNetUnfolderBase]: For 250368/250368 co-relation queries the response was YES. [2024-12-02 07:13:32,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549186 conditions, 192520 events. 148500/192520 cut-off events. For 250368/250368 co-relation queries the response was YES. Maximal size of possible extension queue 6175. Compared 1199476 event pairs, 26653 based on Foata normal form. 1/165037 useless extension candidates. Maximal degree in co-relation 549161. Up to 169486 conditions per place. [2024-12-02 07:13:33,165 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 220 selfloop transitions, 67 changer transitions 4/296 dead transitions. [2024-12-02 07:13:33,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 296 transitions, 2381 flow [2024-12-02 07:13:33,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:13:33,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 07:13:33,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 232 transitions. [2024-12-02 07:13:33,167 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6137566137566137 [2024-12-02 07:13:33,167 INFO L175 Difference]: Start difference. First operand has 94 places, 161 transitions, 1201 flow. Second operand 7 states and 232 transitions. [2024-12-02 07:13:33,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 296 transitions, 2381 flow [2024-12-02 07:13:39,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 296 transitions, 2280 flow, removed 48 selfloop flow, removed 1 redundant places. [2024-12-02 07:13:39,114 INFO L231 Difference]: Finished difference. Result has 103 places, 197 transitions, 1679 flow [2024-12-02 07:13:39,114 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1679, PETRI_PLACES=103, PETRI_TRANSITIONS=197} [2024-12-02 07:13:39,115 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 50 predicate places. [2024-12-02 07:13:39,115 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 197 transitions, 1679 flow [2024-12-02 07:13:39,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:13:39,115 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:13:39,115 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:13:39,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 07:13:39,115 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 07:13:39,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:13:39,116 INFO L85 PathProgramCache]: Analyzing trace with hash -14265105, now seen corresponding path program 3 times [2024-12-02 07:13:39,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:13:39,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20229377] [2024-12-02 07:13:39,116 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 07:13:39,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:13:39,130 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-12-02 07:13:39,130 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:13:39,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:13:39,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:13:39,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20229377] [2024-12-02 07:13:39,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20229377] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:13:39,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:13:39,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:13:39,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120054110] [2024-12-02 07:13:39,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:13:39,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:13:39,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:13:39,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:13:39,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:13:39,280 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-12-02 07:13:39,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 197 transitions, 1679 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:13:39,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:13:39,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-12-02 07:13:39,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:13:54,442 INFO L124 PetriNetUnfolderBase]: 158094/204959 cut-off events. [2024-12-02 07:13:54,443 INFO L125 PetriNetUnfolderBase]: For 345411/345411 co-relation queries the response was YES. [2024-12-02 07:13:55,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612559 conditions, 204959 events. 158094/204959 cut-off events. For 345411/345411 co-relation queries the response was YES. Maximal size of possible extension queue 6600. Compared 1286165 event pairs, 29179 based on Foata normal form. 1/175628 useless extension candidates. Maximal degree in co-relation 612529. Up to 181787 conditions per place. [2024-12-02 07:13:55,634 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 239 selfloop transitions, 67 changer transitions 4/315 dead transitions. [2024-12-02 07:13:55,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 315 transitions, 2755 flow [2024-12-02 07:13:55,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:13:55,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 07:13:55,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2024-12-02 07:13:55,636 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-12-02 07:13:55,636 INFO L175 Difference]: Start difference. First operand has 103 places, 197 transitions, 1679 flow. Second operand 7 states and 234 transitions. [2024-12-02 07:13:55,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 315 transitions, 2755 flow [2024-12-02 07:14:05,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 315 transitions, 2651 flow, removed 52 selfloop flow, removed 0 redundant places. [2024-12-02 07:14:05,407 INFO L231 Difference]: Finished difference. Result has 111 places, 214 transitions, 1953 flow [2024-12-02 07:14:05,407 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1953, PETRI_PLACES=111, PETRI_TRANSITIONS=214} [2024-12-02 07:14:05,407 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 58 predicate places. [2024-12-02 07:14:05,408 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 214 transitions, 1953 flow [2024-12-02 07:14:05,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:14:05,408 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:14:05,408 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:14:05,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 07:14:05,408 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 07:14:05,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:14:05,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1286937201, now seen corresponding path program 2 times [2024-12-02 07:14:05,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:14:05,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052053797] [2024-12-02 07:14:05,409 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 07:14:05,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:14:05,426 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 07:14:05,426 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:14:05,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:14:05,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:14:05,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052053797] [2024-12-02 07:14:05,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052053797] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:14:05,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:14:05,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:14:05,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084553840] [2024-12-02 07:14:05,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:14:05,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:14:05,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:14:05,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:14:05,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:14:05,550 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-12-02 07:14:05,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 214 transitions, 1953 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:14:05,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:14:05,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-12-02 07:14:05,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:14:21,229 INFO L124 PetriNetUnfolderBase]: 166484/215790 cut-off events. [2024-12-02 07:14:21,229 INFO L125 PetriNetUnfolderBase]: For 446487/446487 co-relation queries the response was YES. [2024-12-02 07:14:22,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666818 conditions, 215790 events. 166484/215790 cut-off events. For 446487/446487 co-relation queries the response was YES. Maximal size of possible extension queue 6943. Compared 1359880 event pairs, 31145 based on Foata normal form. 1/184816 useless extension candidates. Maximal degree in co-relation 666785. Up to 193957 conditions per place. [2024-12-02 07:14:22,482 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 248 selfloop transitions, 67 changer transitions 4/324 dead transitions. [2024-12-02 07:14:22,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 324 transitions, 3044 flow [2024-12-02 07:14:22,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:14:22,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 07:14:22,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 226 transitions. [2024-12-02 07:14:22,483 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5978835978835979 [2024-12-02 07:14:22,483 INFO L175 Difference]: Start difference. First operand has 111 places, 214 transitions, 1953 flow. Second operand 7 states and 226 transitions. [2024-12-02 07:14:22,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 324 transitions, 3044 flow [2024-12-02 07:14:30,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 324 transitions, 2846 flow, removed 65 selfloop flow, removed 3 redundant places. [2024-12-02 07:14:30,691 INFO L231 Difference]: Finished difference. Result has 116 places, 231 transitions, 2151 flow [2024-12-02 07:14:30,691 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1755, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2151, PETRI_PLACES=116, PETRI_TRANSITIONS=231} [2024-12-02 07:14:30,691 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 63 predicate places. [2024-12-02 07:14:30,691 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 231 transitions, 2151 flow [2024-12-02 07:14:30,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:14:30,691 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:14:30,691 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:14:30,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 07:14:30,692 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 07:14:30,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:14:30,692 INFO L85 PathProgramCache]: Analyzing trace with hash -2092644319, now seen corresponding path program 3 times [2024-12-02 07:14:30,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:14:30,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563109760] [2024-12-02 07:14:30,692 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 07:14:30,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:14:30,709 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-12-02 07:14:30,709 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:14:30,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:14:30,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:14:30,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563109760] [2024-12-02 07:14:30,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563109760] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:14:30,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:14:30,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:14:30,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573484442] [2024-12-02 07:14:30,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:14:30,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:14:30,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:14:30,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:14:30,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:14:30,905 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-12-02 07:14:30,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 231 transitions, 2151 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:14:30,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:14:30,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-12-02 07:14:30,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:14:47,767 INFO L124 PetriNetUnfolderBase]: 174998/226789 cut-off events. [2024-12-02 07:14:47,767 INFO L125 PetriNetUnfolderBase]: For 542842/542842 co-relation queries the response was YES. [2024-12-02 07:14:48,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 720105 conditions, 226789 events. 174998/226789 cut-off events. For 542842/542842 co-relation queries the response was YES. Maximal size of possible extension queue 7280. Compared 1438397 event pairs, 33338 based on Foata normal form. 1/194159 useless extension candidates. Maximal degree in co-relation 720069. Up to 204816 conditions per place. [2024-12-02 07:14:49,480 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 268 selfloop transitions, 67 changer transitions 4/344 dead transitions. [2024-12-02 07:14:49,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 344 transitions, 3329 flow [2024-12-02 07:14:49,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:14:49,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 07:14:49,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 229 transitions. [2024-12-02 07:14:49,482 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6058201058201058 [2024-12-02 07:14:49,482 INFO L175 Difference]: Start difference. First operand has 116 places, 231 transitions, 2151 flow. Second operand 7 states and 229 transitions. [2024-12-02 07:14:49,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 344 transitions, 3329 flow [2024-12-02 07:15:01,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 344 transitions, 3096 flow, removed 75 selfloop flow, removed 3 redundant places. [2024-12-02 07:15:01,012 INFO L231 Difference]: Finished difference. Result has 121 places, 248 transitions, 2352 flow [2024-12-02 07:15:01,012 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1918, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2352, PETRI_PLACES=121, PETRI_TRANSITIONS=248} [2024-12-02 07:15:01,013 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 68 predicate places. [2024-12-02 07:15:01,013 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 248 transitions, 2352 flow [2024-12-02 07:15:01,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:15:01,013 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:15:01,013 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:15:01,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 07:15:01,013 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 07:15:01,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:15:01,014 INFO L85 PathProgramCache]: Analyzing trace with hash -417281343, now seen corresponding path program 4 times [2024-12-02 07:15:01,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:15:01,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416337475] [2024-12-02 07:15:01,014 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 07:15:01,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:15:01,033 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 07:15:01,033 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:15:01,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:15:01,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:15:01,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416337475] [2024-12-02 07:15:01,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416337475] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:15:01,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:15:01,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:15:01,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708996086] [2024-12-02 07:15:01,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:15:01,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:15:01,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:15:01,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:15:01,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:15:01,255 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-12-02 07:15:01,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 248 transitions, 2352 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:15:01,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:15:01,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-12-02 07:15:01,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:15:19,957 INFO L124 PetriNetUnfolderBase]: 185835/240839 cut-off events. [2024-12-02 07:15:19,957 INFO L125 PetriNetUnfolderBase]: For 650056/650056 co-relation queries the response was YES. [2024-12-02 07:15:21,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 782414 conditions, 240839 events. 185835/240839 cut-off events. For 650056/650056 co-relation queries the response was YES. Maximal size of possible extension queue 7795. Compared 1534226 event pairs, 35232 based on Foata normal form. 1/206162 useless extension candidates. Maximal degree in co-relation 782375. Up to 216651 conditions per place. [2024-12-02 07:15:21,711 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 286 selfloop transitions, 80 changer transitions 5/376 dead transitions. [2024-12-02 07:15:21,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 376 transitions, 3727 flow [2024-12-02 07:15:21,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:15:21,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 07:15:21,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 230 transitions. [2024-12-02 07:15:21,713 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6084656084656085 [2024-12-02 07:15:21,713 INFO L175 Difference]: Start difference. First operand has 121 places, 248 transitions, 2352 flow. Second operand 7 states and 230 transitions. [2024-12-02 07:15:21,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 376 transitions, 3727 flow [2024-12-02 07:15:38,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 376 transitions, 3455 flow, removed 93 selfloop flow, removed 3 redundant places. [2024-12-02 07:15:38,084 INFO L231 Difference]: Finished difference. Result has 129 places, 280 transitions, 2776 flow [2024-12-02 07:15:38,085 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2098, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2776, PETRI_PLACES=129, PETRI_TRANSITIONS=280} [2024-12-02 07:15:38,085 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, 76 predicate places. [2024-12-02 07:15:38,085 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 280 transitions, 2776 flow [2024-12-02 07:15:38,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:15:38,085 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:15:38,086 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:15:38,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 07:15:38,086 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 07:15:38,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:15:38,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1351523843, now seen corresponding path program 5 times [2024-12-02 07:15:38,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:15:38,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499457668] [2024-12-02 07:15:38,086 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 07:15:38,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:15:38,102 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 07:15:38,102 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:15:38,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:15:38,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:15:38,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499457668] [2024-12-02 07:15:38,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499457668] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:15:38,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961622339] [2024-12-02 07:15:38,405 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 07:15:38,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:15:38,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:15:38,407 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:15:38,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d7bb6f3-4aee-4815-b5e6-c75d2ab98450/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 07:15:38,500 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 07:15:38,500 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:15:38,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-12-02 07:15:38,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:15:38,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 07:15:38,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-12-02 07:15:38,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:15:38,910 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:15:39,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:15:39,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961622339] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 07:15:39,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:15:39,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 9] total 22 [2024-12-02 07:15:39,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007085850] [2024-12-02 07:15:39,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:15:39,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:15:39,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:15:39,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:15:39,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2024-12-02 07:15:39,096 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 54 [2024-12-02 07:15:39,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 280 transitions, 2776 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:15:39,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:15:39,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 54 [2024-12-02 07:15:39,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand