./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX --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 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:15:54,833 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:15:54,947 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 17:15:54,959 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:15:54,960 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:15:55,002 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:15:55,003 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:15:55,004 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:15:55,005 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:15:55,007 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:15:55,007 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:15:55,008 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:15:55,009 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:15:55,010 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:15:55,013 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:15:55,013 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:15:55,014 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:15:55,014 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:15:55,014 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:15:55,015 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:15:55,015 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:15:55,020 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:15:55,020 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:15:55,020 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:15:55,020 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:15:55,021 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:15:55,021 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:15:55,021 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:15:55,022 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:15:55,022 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:15:55,022 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:15:55,023 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:15:55,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:15:55,026 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:15:55,027 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:15:55,027 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:15:55,028 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:15:55,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:15:55,029 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:15:55,030 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:15:55,030 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:15:55,031 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:15:55,031 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a [2024-11-08 17:15:55,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:15:55,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:15:55,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:15:55,516 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:15:55,517 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:15:55,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c Unable to find full path for "g++" [2024-11-08 17:15:58,095 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:15:58,317 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:15:58,318 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2024-11-08 17:15:58,329 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/data/16a2a0ea4/fd6f99e035d24ba78da3f855f7b0eaef/FLAG3897de615 [2024-11-08 17:15:58,349 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/data/16a2a0ea4/fd6f99e035d24ba78da3f855f7b0eaef [2024-11-08 17:15:58,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:15:58,354 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:15:58,356 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:15:58,356 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:15:58,367 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:15:58,369 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:15:58" (1/1) ... [2024-11-08 17:15:58,370 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@386d5a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:58, skipping insertion in model container [2024-11-08 17:15:58,371 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:15:58" (1/1) ... [2024-11-08 17:15:58,403 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:15:58,721 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_e13b13db-1f92-40f9-8480-d4cc7a63e651/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c[2564,2577] [2024-11-08 17:15:58,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:15:58,745 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:15:58,770 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_e13b13db-1f92-40f9-8480-d4cc7a63e651/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c[2564,2577] [2024-11-08 17:15:58,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:15:58,801 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:15:58,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:58 WrapperNode [2024-11-08 17:15:58,802 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:15:58,803 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:15:58,803 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:15:58,804 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:15:58,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:58" (1/1) ... [2024-11-08 17:15:58,824 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:58" (1/1) ... [2024-11-08 17:15:58,867 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 178 [2024-11-08 17:15:58,868 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:15:58,868 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:15:58,869 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:15:58,871 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:15:58,886 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:58" (1/1) ... [2024-11-08 17:15:58,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:58" (1/1) ... [2024-11-08 17:15:58,891 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:58" (1/1) ... [2024-11-08 17:15:58,910 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-08 17:15:58,911 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:58" (1/1) ... [2024-11-08 17:15:58,917 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:58" (1/1) ... [2024-11-08 17:15:58,925 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:58" (1/1) ... [2024-11-08 17:15:58,930 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:58" (1/1) ... [2024-11-08 17:15:58,933 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:58" (1/1) ... [2024-11-08 17:15:58,934 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:58" (1/1) ... [2024-11-08 17:15:58,938 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:15:58,940 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:15:58,940 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:15:58,940 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:15:58,941 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:58" (1/1) ... [2024-11-08 17:15:58,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:15:58,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:15:58,993 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:15:59,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:15:59,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:15:59,049 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-08 17:15:59,049 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-08 17:15:59,049 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-08 17:15:59,049 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-08 17:15:59,049 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-08 17:15:59,051 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-08 17:15:59,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:15:59,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:15:59,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:15:59,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:15:59,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 17:15:59,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 17:15:59,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:15:59,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:15:59,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:15:59,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:15:59,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:15:59,059 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 17:15:59,254 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:15:59,257 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:15:59,736 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:15:59,736 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:16:00,125 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:16:00,129 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:16:00,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:16:00 BoogieIcfgContainer [2024-11-08 17:16:00,130 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:16:00,133 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:16:00,133 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:16:00,141 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:16:00,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:15:58" (1/3) ... [2024-11-08 17:16:00,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb234f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:16:00, skipping insertion in model container [2024-11-08 17:16:00,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:58" (2/3) ... [2024-11-08 17:16:00,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb234f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:16:00, skipping insertion in model container [2024-11-08 17:16:00,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:16:00" (3/3) ... [2024-11-08 17:16:00,148 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2024-11-08 17:16:00,172 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:16:00,172 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:16:00,173 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:16:00,257 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 17:16:00,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 45 transitions, 111 flow [2024-11-08 17:16:00,370 INFO L124 PetriNetUnfolderBase]: 8/42 cut-off events. [2024-11-08 17:16:00,372 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 17:16:00,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 42 events. 8/42 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 67 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-08 17:16:00,377 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 45 transitions, 111 flow [2024-11-08 17:16:00,382 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 41 transitions, 100 flow [2024-11-08 17:16:00,395 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:16:00,404 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;@352341f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:16:00,404 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-08 17:16:00,425 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:16:00,425 INFO L124 PetriNetUnfolderBase]: 8/40 cut-off events. [2024-11-08 17:16:00,426 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 17:16:00,427 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:16:00,428 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:16:00,429 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 1 more)] === [2024-11-08 17:16:00,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:16:00,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1957689387, now seen corresponding path program 1 times [2024-11-08 17:16:00,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:16:00,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486981278] [2024-11-08 17:16:00,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:16:00,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:16:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:01,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:16:01,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:16:01,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486981278] [2024-11-08 17:16:01,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486981278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:16:01,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:16:01,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:16:01,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196969216] [2024-11-08 17:16:01,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:16:01,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:16:01,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:16:01,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:16:01,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:16:01,262 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-11-08 17:16:01,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:01,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:16:01,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-11-08 17:16:01,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:16:01,659 INFO L124 PetriNetUnfolderBase]: 670/1106 cut-off events. [2024-11-08 17:16:01,660 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-11-08 17:16:01,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2101 conditions, 1106 events. 670/1106 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5317 event pairs, 126 based on Foata normal form. 1/966 useless extension candidates. Maximal degree in co-relation 1864. Up to 677 conditions per place. [2024-11-08 17:16:01,680 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 37 selfloop transitions, 4 changer transitions 1/58 dead transitions. [2024-11-08 17:16:01,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 233 flow [2024-11-08 17:16:01,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:16:01,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:16:01,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-11-08 17:16:01,702 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7407407407407407 [2024-11-08 17:16:01,705 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 100 flow. Second operand 3 states and 100 transitions. [2024-11-08 17:16:01,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 233 flow [2024-11-08 17:16:01,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 58 transitions, 211 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-08 17:16:01,744 INFO L231 Difference]: Finished difference. Result has 40 places, 44 transitions, 114 flow [2024-11-08 17:16:01,747 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=40, PETRI_TRANSITIONS=44} [2024-11-08 17:16:01,752 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2024-11-08 17:16:01,753 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 44 transitions, 114 flow [2024-11-08 17:16:01,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:01,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:16:01,754 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:16:01,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:16:01,756 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 1 more)] === [2024-11-08 17:16:01,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:16:01,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1231585285, now seen corresponding path program 1 times [2024-11-08 17:16:01,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:16:01,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112020786] [2024-11-08 17:16:01,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:16:01,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:16:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:02,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:16:02,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:16:02,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112020786] [2024-11-08 17:16:02,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112020786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:16:02,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:16:02,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:16:02,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122656588] [2024-11-08 17:16:02,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:16:02,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:16:02,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:16:02,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:16:02,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:16:02,118 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2024-11-08 17:16:02,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 44 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:02,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:16:02,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2024-11-08 17:16:02,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:16:02,663 INFO L124 PetriNetUnfolderBase]: 1507/2490 cut-off events. [2024-11-08 17:16:02,663 INFO L125 PetriNetUnfolderBase]: For 354/359 co-relation queries the response was YES. [2024-11-08 17:16:02,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5137 conditions, 2490 events. 1507/2490 cut-off events. For 354/359 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 14434 event pairs, 868 based on Foata normal form. 62/2288 useless extension candidates. Maximal degree in co-relation 1415. Up to 1388 conditions per place. [2024-11-08 17:16:02,690 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 66 selfloop transitions, 7 changer transitions 0/85 dead transitions. [2024-11-08 17:16:02,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 85 transitions, 372 flow [2024-11-08 17:16:02,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:16:02,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:16:02,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-11-08 17:16:02,695 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5814814814814815 [2024-11-08 17:16:02,696 INFO L175 Difference]: Start difference. First operand has 40 places, 44 transitions, 114 flow. Second operand 6 states and 157 transitions. [2024-11-08 17:16:02,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 85 transitions, 372 flow [2024-11-08 17:16:02,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 85 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:16:02,702 INFO L231 Difference]: Finished difference. Result has 48 places, 50 transitions, 162 flow [2024-11-08 17:16:02,702 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=48, PETRI_TRANSITIONS=50} [2024-11-08 17:16:02,705 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2024-11-08 17:16:02,705 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 50 transitions, 162 flow [2024-11-08 17:16:02,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:02,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:16:02,706 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:16:02,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:16:02,706 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 1 more)] === [2024-11-08 17:16:02,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:16:02,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1948601881, now seen corresponding path program 1 times [2024-11-08 17:16:02,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:16:02,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704647420] [2024-11-08 17:16:02,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:16:02,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:16:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:02,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:16:02,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:16:02,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704647420] [2024-11-08 17:16:02,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704647420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:16:02,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:16:02,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:16:02,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247558861] [2024-11-08 17:16:02,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:16:02,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:16:02,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:16:02,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:16:02,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:16:03,091 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2024-11-08 17:16:03,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 50 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:03,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:16:03,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2024-11-08 17:16:03,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:16:03,589 INFO L124 PetriNetUnfolderBase]: 1352/2210 cut-off events. [2024-11-08 17:16:03,590 INFO L125 PetriNetUnfolderBase]: For 719/807 co-relation queries the response was YES. [2024-11-08 17:16:03,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4848 conditions, 2210 events. 1352/2210 cut-off events. For 719/807 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 12177 event pairs, 817 based on Foata normal form. 48/2063 useless extension candidates. Maximal degree in co-relation 3611. Up to 1428 conditions per place. [2024-11-08 17:16:03,612 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 59 selfloop transitions, 7 changer transitions 0/78 dead transitions. [2024-11-08 17:16:03,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 78 transitions, 376 flow [2024-11-08 17:16:03,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:16:03,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 17:16:03,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-11-08 17:16:03,618 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.562962962962963 [2024-11-08 17:16:03,618 INFO L175 Difference]: Start difference. First operand has 48 places, 50 transitions, 162 flow. Second operand 6 states and 152 transitions. [2024-11-08 17:16:03,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 78 transitions, 376 flow [2024-11-08 17:16:03,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 78 transitions, 374 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:16:03,627 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 189 flow [2024-11-08 17:16:03,628 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2024-11-08 17:16:03,629 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-11-08 17:16:03,630 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 189 flow [2024-11-08 17:16:03,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:03,631 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:16:03,632 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:16:03,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:16:03,632 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 1 more)] === [2024-11-08 17:16:03,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:16:03,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1933850689, now seen corresponding path program 1 times [2024-11-08 17:16:03,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:16:03,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312887898] [2024-11-08 17:16:03,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:16:03,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:16:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:03,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:16:03,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:16:03,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312887898] [2024-11-08 17:16:03,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312887898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:16:03,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:16:03,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:16:03,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086780966] [2024-11-08 17:16:03,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:16:03,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:16:03,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:16:03,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:16:03,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:16:04,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-11-08 17:16:04,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 189 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:04,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:16:04,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-11-08 17:16:04,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:16:04,549 INFO L124 PetriNetUnfolderBase]: 1296/1973 cut-off events. [2024-11-08 17:16:04,550 INFO L125 PetriNetUnfolderBase]: For 1108/1300 co-relation queries the response was YES. [2024-11-08 17:16:04,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4913 conditions, 1973 events. 1296/1973 cut-off events. For 1108/1300 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9693 event pairs, 710 based on Foata normal form. 0/1795 useless extension candidates. Maximal degree in co-relation 4042. Up to 1297 conditions per place. [2024-11-08 17:16:04,569 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 43 selfloop transitions, 5 changer transitions 26/84 dead transitions. [2024-11-08 17:16:04,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 84 transitions, 443 flow [2024-11-08 17:16:04,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:16:04,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:16:04,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-11-08 17:16:04,575 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-11-08 17:16:04,575 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 189 flow. Second operand 7 states and 161 transitions. [2024-11-08 17:16:04,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 84 transitions, 443 flow [2024-11-08 17:16:04,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 84 transitions, 434 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 17:16:04,584 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 150 flow [2024-11-08 17:16:04,585 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=150, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2024-11-08 17:16:04,586 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2024-11-08 17:16:04,586 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 150 flow [2024-11-08 17:16:04,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:04,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:16:04,588 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:16:04,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:16:04,589 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 1 more)] === [2024-11-08 17:16:04,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:16:04,590 INFO L85 PathProgramCache]: Analyzing trace with hash -113709659, now seen corresponding path program 1 times [2024-11-08 17:16:04,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:16:04,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479562976] [2024-11-08 17:16:04,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:16:04,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:16:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:04,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:16:04,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:16:04,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479562976] [2024-11-08 17:16:04,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479562976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:16:04,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983187759] [2024-11-08 17:16:04,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:16:04,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:16:04,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:16:04,911 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:16:04,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:16:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:05,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 17:16:05,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:16:05,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:16:05,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:16:05,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:16:05,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983187759] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:16:05,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:16:05,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2024-11-08 17:16:05,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684076337] [2024-11-08 17:16:05,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:16:05,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 17:16:05,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:16:05,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 17:16:05,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:16:05,826 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-11-08 17:16:05,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 150 flow. Second operand has 15 states, 15 states have (on average 10.8) internal successors, (162), 15 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:05,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:16:05,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-11-08 17:16:05,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:16:07,304 INFO L124 PetriNetUnfolderBase]: 3271/4630 cut-off events. [2024-11-08 17:16:07,305 INFO L125 PetriNetUnfolderBase]: For 2004/2321 co-relation queries the response was YES. [2024-11-08 17:16:07,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11850 conditions, 4630 events. 3271/4630 cut-off events. For 2004/2321 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 23734 event pairs, 535 based on Foata normal form. 222/4654 useless extension candidates. Maximal degree in co-relation 11816. Up to 1180 conditions per place. [2024-11-08 17:16:07,350 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 146 selfloop transitions, 27 changer transitions 0/178 dead transitions. [2024-11-08 17:16:07,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 178 transitions, 923 flow [2024-11-08 17:16:07,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:16:07,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-08 17:16:07,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 283 transitions. [2024-11-08 17:16:07,358 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4192592592592593 [2024-11-08 17:16:07,359 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 150 flow. Second operand 15 states and 283 transitions. [2024-11-08 17:16:07,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 178 transitions, 923 flow [2024-11-08 17:16:07,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 178 transitions, 817 flow, removed 43 selfloop flow, removed 10 redundant places. [2024-11-08 17:16:07,401 INFO L231 Difference]: Finished difference. Result has 62 places, 68 transitions, 284 flow [2024-11-08 17:16:07,405 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=284, PETRI_PLACES=62, PETRI_TRANSITIONS=68} [2024-11-08 17:16:07,406 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2024-11-08 17:16:07,406 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 68 transitions, 284 flow [2024-11-08 17:16:07,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.8) internal successors, (162), 15 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:07,407 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:16:07,407 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:16:07,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 17:16:07,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:16:07,609 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 1 more)] === [2024-11-08 17:16:07,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:16:07,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1119130927, now seen corresponding path program 2 times [2024-11-08 17:16:07,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:16:07,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356157594] [2024-11-08 17:16:07,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:16:07,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:16:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:07,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:16:07,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:16:07,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356157594] [2024-11-08 17:16:07,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356157594] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:16:07,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917600624] [2024-11-08 17:16:07,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:16:07,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:16:07,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:16:07,933 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:16:07,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:16:08,065 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:16:08,066 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:16:08,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 17:16:08,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:16:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:16:08,207 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:16:08,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:16:08,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917600624] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 17:16:08,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:16:08,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 6] total 14 [2024-11-08 17:16:08,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671512174] [2024-11-08 17:16:08,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:16:08,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:16:08,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:16:08,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:16:08,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:16:08,479 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-11-08 17:16:08,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 68 transitions, 284 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:08,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:16:08,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-11-08 17:16:08,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:16:09,656 INFO L124 PetriNetUnfolderBase]: 3919/5651 cut-off events. [2024-11-08 17:16:09,657 INFO L125 PetriNetUnfolderBase]: For 3806/3806 co-relation queries the response was YES. [2024-11-08 17:16:09,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15078 conditions, 5651 events. 3919/5651 cut-off events. For 3806/3806 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 30513 event pairs, 565 based on Foata normal form. 262/5879 useless extension candidates. Maximal degree in co-relation 15048. Up to 1511 conditions per place. [2024-11-08 17:16:09,709 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 111 selfloop transitions, 33 changer transitions 0/149 dead transitions. [2024-11-08 17:16:09,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 149 transitions, 860 flow [2024-11-08 17:16:09,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:16:09,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-08 17:16:09,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-11-08 17:16:09,711 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43209876543209874 [2024-11-08 17:16:09,711 INFO L175 Difference]: Start difference. First operand has 62 places, 68 transitions, 284 flow. Second operand 9 states and 175 transitions. [2024-11-08 17:16:09,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 149 transitions, 860 flow [2024-11-08 17:16:09,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 149 transitions, 855 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 17:16:09,735 INFO L231 Difference]: Finished difference. Result has 73 places, 84 transitions, 504 flow [2024-11-08 17:16:09,735 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=504, PETRI_PLACES=73, PETRI_TRANSITIONS=84} [2024-11-08 17:16:09,736 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2024-11-08 17:16:09,736 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 84 transitions, 504 flow [2024-11-08 17:16:09,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:09,737 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:16:09,737 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:16:09,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 17:16:09,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:16:09,939 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 1 more)] === [2024-11-08 17:16:09,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:16:09,940 INFO L85 PathProgramCache]: Analyzing trace with hash 137468349, now seen corresponding path program 3 times [2024-11-08 17:16:09,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:16:09,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818119833] [2024-11-08 17:16:09,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:16:09,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:16:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:10,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:16:10,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:16:10,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818119833] [2024-11-08 17:16:10,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818119833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:16:10,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308563848] [2024-11-08 17:16:10,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:16:10,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:16:10,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:16:10,268 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:16:10,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:16:10,409 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 17:16:10,409 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:16:10,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 17:16:10,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:16:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:16:10,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:16:10,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:16:10,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308563848] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:16:10,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:16:10,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 15 [2024-11-08 17:16:10,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267833627] [2024-11-08 17:16:10,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:16:10,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 17:16:10,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:16:10,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 17:16:10,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:16:10,995 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-11-08 17:16:10,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 84 transitions, 504 flow. Second operand has 16 states, 16 states have (on average 11.125) internal successors, (178), 16 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:10,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:16:10,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-11-08 17:16:10,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:16:13,428 INFO L124 PetriNetUnfolderBase]: 5945/8500 cut-off events. [2024-11-08 17:16:13,429 INFO L125 PetriNetUnfolderBase]: For 13186/13186 co-relation queries the response was YES. [2024-11-08 17:16:13,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26832 conditions, 8500 events. 5945/8500 cut-off events. For 13186/13186 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 48235 event pairs, 890 based on Foata normal form. 30/8504 useless extension candidates. Maximal degree in co-relation 26795. Up to 2143 conditions per place. [2024-11-08 17:16:13,530 INFO L140 encePairwiseOnDemand]: 29/45 looper letters, 165 selfloop transitions, 81 changer transitions 0/251 dead transitions. [2024-11-08 17:16:13,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 251 transitions, 1738 flow [2024-11-08 17:16:13,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 17:16:13,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-08 17:16:13,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 309 transitions. [2024-11-08 17:16:13,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42916666666666664 [2024-11-08 17:16:13,534 INFO L175 Difference]: Start difference. First operand has 73 places, 84 transitions, 504 flow. Second operand 16 states and 309 transitions. [2024-11-08 17:16:13,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 251 transitions, 1738 flow [2024-11-08 17:16:13,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 251 transitions, 1695 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-11-08 17:16:13,793 INFO L231 Difference]: Finished difference. Result has 95 places, 131 transitions, 1133 flow [2024-11-08 17:16:13,794 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1133, PETRI_PLACES=95, PETRI_TRANSITIONS=131} [2024-11-08 17:16:13,795 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 52 predicate places. [2024-11-08 17:16:13,796 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 131 transitions, 1133 flow [2024-11-08 17:16:13,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.125) internal successors, (178), 16 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:13,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:16:13,797 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:16:13,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 17:16:14,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:16:14,002 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 1 more)] === [2024-11-08 17:16:14,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:16:14,002 INFO L85 PathProgramCache]: Analyzing trace with hash 438801657, now seen corresponding path program 4 times [2024-11-08 17:16:14,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:16:14,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116791754] [2024-11-08 17:16:14,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:16:14,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:16:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:14,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:16:14,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:16:14,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116791754] [2024-11-08 17:16:14,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116791754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:16:14,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941978116] [2024-11-08 17:16:14,348 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 17:16:14,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:16:14,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:16:14,351 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:16:14,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:16:14,466 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 17:16:14,467 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:16:14,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:16:14,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:16:14,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:16:14,602 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:16:14,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:16:14,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941978116] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:16:14,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:16:14,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2024-11-08 17:16:14,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153997604] [2024-11-08 17:16:14,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:16:14,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 17:16:14,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:16:14,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 17:16:14,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:16:14,947 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 45 [2024-11-08 17:16:14,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 131 transitions, 1133 flow. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:14,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:16:14,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 45 [2024-11-08 17:16:14,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:16:19,667 INFO L124 PetriNetUnfolderBase]: 13216/18420 cut-off events. [2024-11-08 17:16:19,668 INFO L125 PetriNetUnfolderBase]: For 50725/50725 co-relation queries the response was YES. [2024-11-08 17:16:19,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67259 conditions, 18420 events. 13216/18420 cut-off events. For 50725/50725 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 99195 event pairs, 785 based on Foata normal form. 54/17009 useless extension candidates. Maximal degree in co-relation 67212. Up to 3556 conditions per place. [2024-11-08 17:16:19,858 INFO L140 encePairwiseOnDemand]: 27/45 looper letters, 299 selfloop transitions, 208 changer transitions 0/508 dead transitions. [2024-11-08 17:16:19,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 508 transitions, 4627 flow [2024-11-08 17:16:19,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 17:16:19,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-08 17:16:19,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 404 transitions. [2024-11-08 17:16:19,863 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3591111111111111 [2024-11-08 17:16:19,863 INFO L175 Difference]: Start difference. First operand has 95 places, 131 transitions, 1133 flow. Second operand 25 states and 404 transitions. [2024-11-08 17:16:19,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 508 transitions, 4627 flow [2024-11-08 17:16:20,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 508 transitions, 4556 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-11-08 17:16:20,679 INFO L231 Difference]: Finished difference. Result has 131 places, 277 transitions, 3238 flow [2024-11-08 17:16:20,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3238, PETRI_PLACES=131, PETRI_TRANSITIONS=277} [2024-11-08 17:16:20,681 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 88 predicate places. [2024-11-08 17:16:20,681 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 277 transitions, 3238 flow [2024-11-08 17:16:20,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:20,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:16:20,682 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:16:20,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 17:16:20,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:16:20,888 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 1 more)] === [2024-11-08 17:16:20,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:16:20,889 INFO L85 PathProgramCache]: Analyzing trace with hash -733497719, now seen corresponding path program 5 times [2024-11-08 17:16:20,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:16:20,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884160625] [2024-11-08 17:16:20,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:16:20,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:16:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:21,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:16:21,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:16:21,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884160625] [2024-11-08 17:16:21,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884160625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:16:21,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712092473] [2024-11-08 17:16:21,093 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 17:16:21,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:16:21,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:16:21,096 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:16:21,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:16:21,217 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:16:21,217 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:16:21,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:16:21,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:16:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:16:21,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:16:21,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:16:21,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712092473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:16:21,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:16:21,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2024-11-08 17:16:21,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072525784] [2024-11-08 17:16:21,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:16:21,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 17:16:21,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:16:21,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 17:16:21,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:16:21,697 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 45 [2024-11-08 17:16:21,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 277 transitions, 3238 flow. Second operand has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:21,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:16:21,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 45 [2024-11-08 17:16:21,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:16:27,036 INFO L124 PetriNetUnfolderBase]: 15649/21862 cut-off events. [2024-11-08 17:16:27,036 INFO L125 PetriNetUnfolderBase]: For 93689/93689 co-relation queries the response was YES. [2024-11-08 17:16:27,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91697 conditions, 21862 events. 15649/21862 cut-off events. For 93689/93689 co-relation queries the response was YES. Maximal size of possible extension queue 769. Compared 121044 event pairs, 1118 based on Foata normal form. 52/20173 useless extension candidates. Maximal degree in co-relation 91634. Up to 3649 conditions per place. [2024-11-08 17:16:27,250 INFO L140 encePairwiseOnDemand]: 28/45 looper letters, 322 selfloop transitions, 268 changer transitions 0/591 dead transitions. [2024-11-08 17:16:27,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 591 transitions, 6507 flow [2024-11-08 17:16:27,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 17:16:27,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-08 17:16:27,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 386 transitions. [2024-11-08 17:16:27,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37294685990338167 [2024-11-08 17:16:27,253 INFO L175 Difference]: Start difference. First operand has 131 places, 277 transitions, 3238 flow. Second operand 23 states and 386 transitions. [2024-11-08 17:16:27,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 591 transitions, 6507 flow [2024-11-08 17:16:28,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 591 transitions, 6382 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-11-08 17:16:29,005 INFO L231 Difference]: Finished difference. Result has 164 places, 399 transitions, 5455 flow [2024-11-08 17:16:29,005 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3091, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=5455, PETRI_PLACES=164, PETRI_TRANSITIONS=399} [2024-11-08 17:16:29,006 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 121 predicate places. [2024-11-08 17:16:29,007 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 399 transitions, 5455 flow [2024-11-08 17:16:29,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:29,007 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:16:29,007 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:16:29,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 17:16:29,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:16:29,208 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 1 more)] === [2024-11-08 17:16:29,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:16:29,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1345736041, now seen corresponding path program 6 times [2024-11-08 17:16:29,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:16:29,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825020071] [2024-11-08 17:16:29,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:16:29,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:16:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:29,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:16:29,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:16:29,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825020071] [2024-11-08 17:16:29,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825020071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:16:29,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417333304] [2024-11-08 17:16:29,467 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 17:16:29,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:16:29,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:16:29,470 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:16:29,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:16:29,592 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-08 17:16:29,592 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:16:29,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 17:16:29,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:16:29,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:16:29,717 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:16:29,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:16:29,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417333304] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 17:16:29,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:16:29,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 6] total 16 [2024-11-08 17:16:29,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675731537] [2024-11-08 17:16:29,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:16:29,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:16:29,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:16:29,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:16:29,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2024-11-08 17:16:29,956 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-11-08 17:16:29,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 399 transitions, 5455 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:29,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:16:29,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-11-08 17:16:29,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:16:33,211 INFO L124 PetriNetUnfolderBase]: 8372/12046 cut-off events. [2024-11-08 17:16:33,211 INFO L125 PetriNetUnfolderBase]: For 90668/90668 co-relation queries the response was YES. [2024-11-08 17:16:33,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62633 conditions, 12046 events. 8372/12046 cut-off events. For 90668/90668 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 71380 event pairs, 778 based on Foata normal form. 28/11955 useless extension candidates. Maximal degree in co-relation 62555. Up to 3893 conditions per place. [2024-11-08 17:16:33,356 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 213 selfloop transitions, 235 changer transitions 0/453 dead transitions. [2024-11-08 17:16:33,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 453 transitions, 6703 flow [2024-11-08 17:16:33,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:16:33,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 17:16:33,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-11-08 17:16:33,358 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-11-08 17:16:33,358 INFO L175 Difference]: Start difference. First operand has 164 places, 399 transitions, 5455 flow. Second operand 8 states and 161 transitions. [2024-11-08 17:16:33,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 453 transitions, 6703 flow [2024-11-08 17:16:34,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 453 transitions, 6558 flow, removed 69 selfloop flow, removed 4 redundant places. [2024-11-08 17:16:34,428 INFO L231 Difference]: Finished difference. Result has 171 places, 406 transitions, 6272 flow [2024-11-08 17:16:34,429 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5282, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6272, PETRI_PLACES=171, PETRI_TRANSITIONS=406} [2024-11-08 17:16:34,429 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 128 predicate places. [2024-11-08 17:16:34,429 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 406 transitions, 6272 flow [2024-11-08 17:16:34,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:34,430 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:16:34,430 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:16:34,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 17:16:34,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 17:16:34,633 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 1 more)] === [2024-11-08 17:16:34,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:16:34,634 INFO L85 PathProgramCache]: Analyzing trace with hash 708525855, now seen corresponding path program 1 times [2024-11-08 17:16:34,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:16:34,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997346152] [2024-11-08 17:16:34,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:16:34,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:16:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:34,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:16:34,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:16:34,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997346152] [2024-11-08 17:16:34,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997346152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:16:34,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082586156] [2024-11-08 17:16:34,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:16:34,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:16:34,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:16:34,784 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:16:34,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:16:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:34,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:16:34,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:16:34,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:16:34,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:16:35,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:16:35,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082586156] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 17:16:35,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:16:35,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 10 [2024-11-08 17:16:35,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002654953] [2024-11-08 17:16:35,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:16:35,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:16:35,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:16:35,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:16:35,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:16:35,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-11-08 17:16:35,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 406 transitions, 6272 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:35,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:16:35,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-11-08 17:16:35,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:16:38,598 INFO L124 PetriNetUnfolderBase]: 8804/13654 cut-off events. [2024-11-08 17:16:38,598 INFO L125 PetriNetUnfolderBase]: For 180830/182242 co-relation queries the response was YES. [2024-11-08 17:16:38,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81141 conditions, 13654 events. 8804/13654 cut-off events. For 180830/182242 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 91407 event pairs, 2144 based on Foata normal form. 298/12979 useless extension candidates. Maximal degree in co-relation 81059. Up to 5829 conditions per place. [2024-11-08 17:16:38,787 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 363 selfloop transitions, 38 changer transitions 0/514 dead transitions. [2024-11-08 17:16:38,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 514 transitions, 8989 flow [2024-11-08 17:16:38,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:16:38,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:16:38,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-11-08 17:16:38,789 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-11-08 17:16:38,789 INFO L175 Difference]: Start difference. First operand has 171 places, 406 transitions, 6272 flow. Second operand 5 states and 108 transitions. [2024-11-08 17:16:38,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 514 transitions, 8989 flow [2024-11-08 17:16:40,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 514 transitions, 8970 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-08 17:16:40,595 INFO L231 Difference]: Finished difference. Result has 175 places, 406 transitions, 6406 flow [2024-11-08 17:16:40,595 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=6251, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6406, PETRI_PLACES=175, PETRI_TRANSITIONS=406} [2024-11-08 17:16:40,596 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 132 predicate places. [2024-11-08 17:16:40,596 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 406 transitions, 6406 flow [2024-11-08 17:16:40,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:40,597 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:16:40,597 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:16:40,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 17:16:40,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 17:16:40,798 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 1 more)] === [2024-11-08 17:16:40,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:16:40,799 INFO L85 PathProgramCache]: Analyzing trace with hash 317638815, now seen corresponding path program 1 times [2024-11-08 17:16:40,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:16:40,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355558300] [2024-11-08 17:16:40,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:16:40,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:16:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:42,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:16:42,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:16:42,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355558300] [2024-11-08 17:16:42,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355558300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:16:42,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585434373] [2024-11-08 17:16:42,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:16:42,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:16:42,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:16:42,039 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:16:42,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 17:16:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:42,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-08 17:16:42,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:16:42,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 17:16:42,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-08 17:16:42,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:16:42,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:16:43,706 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 33 treesize of output 29 [2024-11-08 17:16:43,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:16:43,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 62 [2024-11-08 17:16:44,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:16:44,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585434373] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:16:44,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:16:44,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 28 [2024-11-08 17:16:44,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162054671] [2024-11-08 17:16:44,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:16:44,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 17:16:44,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:16:44,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 17:16:44,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2024-11-08 17:16:45,510 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-11-08 17:16:45,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 406 transitions, 6406 flow. Second operand has 29 states, 29 states have (on average 12.379310344827585) internal successors, (359), 29 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:45,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:16:45,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-11-08 17:16:45,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:16:56,059 INFO L124 PetriNetUnfolderBase]: 18216/27928 cut-off events. [2024-11-08 17:16:56,059 INFO L125 PetriNetUnfolderBase]: For 302318/303715 co-relation queries the response was YES. [2024-11-08 17:16:56,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156835 conditions, 27928 events. 18216/27928 cut-off events. For 302318/303715 co-relation queries the response was YES. Maximal size of possible extension queue 1306. Compared 199194 event pairs, 862 based on Foata normal form. 471/27976 useless extension candidates. Maximal degree in co-relation 152022. Up to 13438 conditions per place. [2024-11-08 17:16:56,424 INFO L140 encePairwiseOnDemand]: 29/45 looper letters, 1294 selfloop transitions, 379 changer transitions 6/1738 dead transitions. [2024-11-08 17:16:56,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 1738 transitions, 28968 flow [2024-11-08 17:16:56,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 17:16:56,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-08 17:16:56,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 645 transitions. [2024-11-08 17:16:56,428 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-11-08 17:16:56,428 INFO L175 Difference]: Start difference. First operand has 175 places, 406 transitions, 6406 flow. Second operand 32 states and 645 transitions. [2024-11-08 17:16:56,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 1738 transitions, 28968 flow [2024-11-08 17:17:01,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 1738 transitions, 28827 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 17:17:01,958 INFO L231 Difference]: Finished difference. Result has 220 places, 821 transitions, 13640 flow [2024-11-08 17:17:01,959 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=6367, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=13640, PETRI_PLACES=220, PETRI_TRANSITIONS=821} [2024-11-08 17:17:01,960 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 177 predicate places. [2024-11-08 17:17:01,960 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 821 transitions, 13640 flow [2024-11-08 17:17:01,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 12.379310344827585) internal successors, (359), 29 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:17:01,961 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:17:01,961 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:17:01,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 17:17:02,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 17:17:02,166 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 1 more)] === [2024-11-08 17:17:02,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:02,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1170414831, now seen corresponding path program 2 times [2024-11-08 17:17:02,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:17:02,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75244340] [2024-11-08 17:17:02,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:02,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:17:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:03,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:03,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:17:03,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75244340] [2024-11-08 17:17:03,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75244340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:17:03,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366036183] [2024-11-08 17:17:03,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:17:03,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:03,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:17:03,522 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:17:03,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 17:17:03,653 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:17:03,653 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:17:03,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-08 17:17:03,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:03,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 17:17:04,318 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:17:04,319 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 17 treesize of output 15 [2024-11-08 17:17:04,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:04,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:17:05,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:17:05,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366036183] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:17:05,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:17:05,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 10] total 31 [2024-11-08 17:17:05,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299808602] [2024-11-08 17:17:05,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:17:05,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 17:17:05,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:17:05,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 17:17:05,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=854, Unknown=0, NotChecked=0, Total=992 [2024-11-08 17:17:06,147 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 45 [2024-11-08 17:17:06,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 821 transitions, 13640 flow. Second operand has 32 states, 32 states have (on average 6.6875) internal successors, (214), 32 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:17:06,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:17:06,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 45 [2024-11-08 17:17:06,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:17:37,771 INFO L124 PetriNetUnfolderBase]: 52623/74982 cut-off events. [2024-11-08 17:17:37,772 INFO L125 PetriNetUnfolderBase]: For 775969/775969 co-relation queries the response was YES. [2024-11-08 17:17:38,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440341 conditions, 74982 events. 52623/74982 cut-off events. For 775969/775969 co-relation queries the response was YES. Maximal size of possible extension queue 2575. Compared 507235 event pairs, 3913 based on Foata normal form. 2/74984 useless extension candidates. Maximal degree in co-relation 437916. Up to 39437 conditions per place. [2024-11-08 17:17:38,937 INFO L140 encePairwiseOnDemand]: 20/45 looper letters, 1551 selfloop transitions, 716 changer transitions 23/2291 dead transitions. [2024-11-08 17:17:38,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 2291 transitions, 37430 flow [2024-11-08 17:17:38,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-08 17:17:38,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2024-11-08 17:17:38,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 981 transitions. [2024-11-08 17:17:38,942 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29863013698630136 [2024-11-08 17:17:38,943 INFO L175 Difference]: Start difference. First operand has 220 places, 821 transitions, 13640 flow. Second operand 73 states and 981 transitions. [2024-11-08 17:17:38,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 2291 transitions, 37430 flow [2024-11-08 17:18:23,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 2291 transitions, 37144 flow, removed 141 selfloop flow, removed 2 redundant places. [2024-11-08 17:18:23,966 INFO L231 Difference]: Finished difference. Result has 348 places, 1413 transitions, 25975 flow [2024-11-08 17:18:23,967 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=13494, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=821, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=25975, PETRI_PLACES=348, PETRI_TRANSITIONS=1413} [2024-11-08 17:18:23,968 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 305 predicate places. [2024-11-08 17:18:23,968 INFO L471 AbstractCegarLoop]: Abstraction has has 348 places, 1413 transitions, 25975 flow [2024-11-08 17:18:23,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.6875) internal successors, (214), 32 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:18:23,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:18:23,969 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:23,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 17:18:24,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:18:24,170 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 1 more)] === [2024-11-08 17:18:24,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:24,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1271951495, now seen corresponding path program 3 times [2024-11-08 17:18:24,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:18:24,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260741081] [2024-11-08 17:18:24,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:24,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:18:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:25,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:18:25,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:18:25,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260741081] [2024-11-08 17:18:25,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260741081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:18:25,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355973291] [2024-11-08 17:18:25,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:18:25,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:18:25,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:18:25,155 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:18:25,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e13b13db-1f92-40f9-8480-d4cc7a63e651/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 17:18:25,282 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 17:18:25,283 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:18:25,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 17:18:25,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:18:25,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 17:18:25,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-08 17:18:25,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:18:25,708 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:18:26,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:18:26,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355973291] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:18:26,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:18:26,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 8] total 25 [2024-11-08 17:18:26,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229376390] [2024-11-08 17:18:26,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:18:26,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 17:18:26,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:18:26,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 17:18:26,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2024-11-08 17:18:26,862 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-11-08 17:18:26,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 1413 transitions, 25975 flow. Second operand has 26 states, 26 states have (on average 13.615384615384615) internal successors, (354), 26 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:18:26,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:18:26,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-11-08 17:18:26,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand