./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd --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 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:04:05,348 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:04:05,452 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:04:05,463 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:04:05,463 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:04:05,505 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:04:05,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:04:05,506 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:04:05,506 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:04:05,508 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:04:05,509 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:04:05,509 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:04:05,510 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:04:05,510 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:04:05,510 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:04:05,511 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:04:05,511 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:04:05,511 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:04:05,511 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:04:05,511 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:04:05,511 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:04:05,512 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:04:05,512 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:04:05,512 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:04:05,512 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:04:05,512 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:04:05,512 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:04:05,512 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:04:05,513 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:04:05,513 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:04:05,513 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:04:05,513 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:04:05,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:04:05,514 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:04:05,514 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:04:05,515 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:04:05,515 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:04:05,515 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:04:05,515 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:04:05,515 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:04:05,515 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:04:05,515 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:04:05,516 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd 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 -> 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 [2024-11-13 14:04:05,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:04:05,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:04:05,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:04:05,891 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:04:05,891 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:04:05,893 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c Unable to find full path for "g++" [2024-11-13 14:04:07,884 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:04:08,166 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:04:08,166 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2024-11-13 14:04:08,190 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/data/e0e236b90/47cfc5d6bff04e5eb76042841155dcd2/FLAG3f3ddbede [2024-11-13 14:04:08,449 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/data/e0e236b90/47cfc5d6bff04e5eb76042841155dcd2 [2024-11-13 14:04:08,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:04:08,460 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:04:08,461 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:04:08,462 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:04:08,467 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:04:08,468 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:04:08" (1/1) ... [2024-11-13 14:04:08,469 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a55bba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:04:08, skipping insertion in model container [2024-11-13 14:04:08,472 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:04:08" (1/1) ... [2024-11-13 14:04:08,494 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:04:08,716 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_1720016b-3ac9-454f-81ec-a74de111f723/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2637,2650] [2024-11-13 14:04:08,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:04:08,741 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:04:08,764 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_1720016b-3ac9-454f-81ec-a74de111f723/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2637,2650] [2024-11-13 14:04:08,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:04:08,784 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:04:08,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:04:08 WrapperNode [2024-11-13 14:04:08,785 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:04:08,787 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:04:08,787 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:04:08,787 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:04:08,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:04:08" (1/1) ... [2024-11-13 14:04:08,803 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:04:08" (1/1) ... [2024-11-13 14:04:08,830 INFO L138 Inliner]: procedures = 24, calls = 31, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 181 [2024-11-13 14:04:08,830 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:04:08,831 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:04:08,831 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:04:08,831 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:04:08,841 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:04:08" (1/1) ... [2024-11-13 14:04:08,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:04:08" (1/1) ... [2024-11-13 14:04:08,845 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:04:08" (1/1) ... [2024-11-13 14:04:08,864 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 7 writes are split as follows [0, 7]. [2024-11-13 14:04:08,864 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:04:08" (1/1) ... [2024-11-13 14:04:08,864 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:04:08" (1/1) ... [2024-11-13 14:04:08,874 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:04:08" (1/1) ... [2024-11-13 14:04:08,879 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:04:08" (1/1) ... [2024-11-13 14:04:08,880 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:04:08" (1/1) ... [2024-11-13 14:04:08,882 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:04:08" (1/1) ... [2024-11-13 14:04:08,885 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:04:08,886 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:04:08,886 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:04:08,886 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:04:08,887 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:04:08" (1/1) ... [2024-11-13 14:04:08,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:04:08,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:04:08,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:04:08,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:04:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:04:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 14:04:08,955 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 14:04:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 14:04:08,955 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 14:04:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-13 14:04:08,955 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-13 14:04:08,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:04:08,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:04:08,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 14:04:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 14:04:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 14:04:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:04:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:04:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 14:04:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 14:04:08,959 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 14:04:09,091 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:04:09,093 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:04:09,718 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 14:04:09,718 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:04:10,160 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:04:10,160 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-13 14:04:10,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:04:10 BoogieIcfgContainer [2024-11-13 14:04:10,161 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:04:10,163 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:04:10,163 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:04:10,168 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:04:10,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:04:08" (1/3) ... [2024-11-13 14:04:10,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@825be7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:04:10, skipping insertion in model container [2024-11-13 14:04:10,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:04:08" (2/3) ... [2024-11-13 14:04:10,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@825be7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:04:10, skipping insertion in model container [2024-11-13 14:04:10,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:04:10" (3/3) ... [2024-11-13 14:04:10,172 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2024-11-13 14:04:10,189 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:04:10,191 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-vector-add.wvr.c that has 4 procedures, 27 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2024-11-13 14:04:10,191 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 14:04:10,268 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-13 14:04:10,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 33 transitions, 87 flow [2024-11-13 14:04:10,373 INFO L124 PetriNetUnfolderBase]: 7/30 cut-off events. [2024-11-13 14:04:10,376 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 14:04:10,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 7/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-11-13 14:04:10,380 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 33 transitions, 87 flow [2024-11-13 14:04:10,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 29 transitions, 76 flow [2024-11-13 14:04:10,401 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:04:10,421 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;@407a6a5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:04:10,421 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-13 14:04:10,440 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:04:10,440 INFO L124 PetriNetUnfolderBase]: 7/28 cut-off events. [2024-11-13 14:04:10,440 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 14:04:10,441 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:04:10,441 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] [2024-11-13 14:04:10,442 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)] === [2024-11-13 14:04:10,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:04:10,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1639687314, now seen corresponding path program 1 times [2024-11-13 14:04:10,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:04:10,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353774858] [2024-11-13 14:04:10,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:04:10,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:04:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:04:11,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:04:11,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:04:11,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353774858] [2024-11-13 14:04:11,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353774858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:04:11,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:04:11,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:04:11,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497834020] [2024-11-13 14:04:11,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:04:11,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:04:11,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:04:11,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:04:11,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:04:11,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-13 14:04:11,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2024-11-13 14:04:11,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:04:11,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-13 14:04:11,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:04:11,659 INFO L124 PetriNetUnfolderBase]: 405/602 cut-off events. [2024-11-13 14:04:11,659 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-11-13 14:04:11,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1286 conditions, 602 events. 405/602 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1667 event pairs, 248 based on Foata normal form. 1/445 useless extension candidates. Maximal degree in co-relation 534. Up to 301 conditions per place. [2024-11-13 14:04:11,668 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 24 selfloop transitions, 8 changer transitions 25/58 dead transitions. [2024-11-13 14:04:11,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 58 transitions, 266 flow [2024-11-13 14:04:11,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:04:11,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 14:04:11,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-11-13 14:04:11,688 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4909090909090909 [2024-11-13 14:04:11,690 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 76 flow. Second operand 5 states and 81 transitions. [2024-11-13 14:04:11,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 58 transitions, 266 flow [2024-11-13 14:04:11,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 58 transitions, 242 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-13 14:04:11,703 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 116 flow [2024-11-13 14:04:11,708 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2024-11-13 14:04:11,713 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-11-13 14:04:11,713 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 116 flow [2024-11-13 14:04:11,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2024-11-13 14:04:11,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:04:11,714 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] [2024-11-13 14:04:11,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:04:11,714 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)] === [2024-11-13 14:04:11,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:04:11,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1493593043, now seen corresponding path program 1 times [2024-11-13 14:04:11,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:04:11,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714793393] [2024-11-13 14:04:11,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:04:11,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:04:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:04:12,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 14:04:12,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:04:12,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714793393] [2024-11-13 14:04:12,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714793393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:04:12,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186788502] [2024-11-13 14:04:12,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:04:12,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:04:12,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:04:12,188 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:04:12,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:04:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:04:12,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:04:12,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:04:12,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 14:04:12,535 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:04:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 14:04:12,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186788502] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 14:04:12,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:04:12,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-11-13 14:04:12,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760201310] [2024-11-13 14:04:12,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:04:12,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:04:12,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:04:12,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:04:12,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:04:12,641 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-13 14:04:12,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-11-13 14:04:12,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:04:12,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-13 14:04:12,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:04:12,903 INFO L124 PetriNetUnfolderBase]: 262/390 cut-off events. [2024-11-13 14:04:12,904 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-13 14:04:12,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 824 conditions, 390 events. 262/390 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1022 event pairs, 124 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 814. Up to 303 conditions per place. [2024-11-13 14:04:12,910 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 40 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-11-13 14:04:12,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 230 flow [2024-11-13 14:04:12,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:04:12,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 14:04:12,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-11-13 14:04:12,911 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-11-13 14:04:12,912 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 116 flow. Second operand 5 states and 62 transitions. [2024-11-13 14:04:12,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 230 flow [2024-11-13 14:04:12,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 212 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-13 14:04:12,918 INFO L231 Difference]: Finished difference. Result has 33 places, 34 transitions, 114 flow [2024-11-13 14:04:12,920 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=33, PETRI_TRANSITIONS=34} [2024-11-13 14:04:12,921 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-11-13 14:04:12,921 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 34 transitions, 114 flow [2024-11-13 14:04:12,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2024-11-13 14:04:12,923 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:04:12,923 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] [2024-11-13 14:04:12,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:04:13,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:04:13,124 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)] === [2024-11-13 14:04:13,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:04:13,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2041273876, now seen corresponding path program 1 times [2024-11-13 14:04:13,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:04:13,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227083656] [2024-11-13 14:04:13,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:04:13,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:04:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:04:13,609 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 14:04:13,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:04:13,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227083656] [2024-11-13 14:04:13,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227083656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:04:13,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230838882] [2024-11-13 14:04:13,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:04:13,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:04:13,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:04:13,613 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:04:13,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:04:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:04:13,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 14:04:13,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:04:13,978 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 14:04:13,979 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:04:14,140 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 14:04:14,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230838882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:04:14,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:04:14,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2024-11-13 14:04:14,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702849860] [2024-11-13 14:04:14,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:04:14,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 14:04:14,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:04:14,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 14:04:14,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-13 14:04:14,145 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-13 14:04:14,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 34 transitions, 114 flow. Second operand has 14 states, 14 states have (on average 7.0) internal successors, (98), 14 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) [2024-11-13 14:04:14,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:04:14,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-13 14:04:14,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:04:14,800 INFO L124 PetriNetUnfolderBase]: 443/657 cut-off events. [2024-11-13 14:04:14,800 INFO L125 PetriNetUnfolderBase]: For 230/230 co-relation queries the response was YES. [2024-11-13 14:04:14,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1577 conditions, 657 events. 443/657 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2073 event pairs, 169 based on Foata normal form. 0/492 useless extension candidates. Maximal degree in co-relation 1531. Up to 377 conditions per place. [2024-11-13 14:04:14,807 INFO L140 encePairwiseOnDemand]: 18/33 looper letters, 54 selfloop transitions, 14 changer transitions 0/69 dead transitions. [2024-11-13 14:04:14,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 69 transitions, 358 flow [2024-11-13 14:04:14,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 14:04:14,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 14:04:14,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-11-13 14:04:14,810 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3400673400673401 [2024-11-13 14:04:14,810 INFO L175 Difference]: Start difference. First operand has 33 places, 34 transitions, 114 flow. Second operand 9 states and 101 transitions. [2024-11-13 14:04:14,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 69 transitions, 358 flow [2024-11-13 14:04:14,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 69 transitions, 338 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-13 14:04:14,814 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 160 flow [2024-11-13 14:04:14,814 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=160, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2024-11-13 14:04:14,815 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2024-11-13 14:04:14,815 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 160 flow [2024-11-13 14:04:14,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.0) internal successors, (98), 14 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) [2024-11-13 14:04:14,816 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:04:14,816 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] [2024-11-13 14:04:14,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:04:15,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:04:15,020 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)] === [2024-11-13 14:04:15,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:04:15,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1441492142, now seen corresponding path program 2 times [2024-11-13 14:04:15,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:04:15,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665191123] [2024-11-13 14:04:15,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:04:15,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:04:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:04:15,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:04:15,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:04:15,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665191123] [2024-11-13 14:04:15,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665191123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:04:15,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46194476] [2024-11-13 14:04:15,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:04:15,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:04:15,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:04:15,417 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:04:15,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:04:15,573 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 14:04:15,573 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:04:15,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 14:04:15,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:04:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 14:04:15,672 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:04:15,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46194476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:04:15,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:04:15,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-11-13 14:04:15,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383806299] [2024-11-13 14:04:15,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:04:15,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:04:15,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:04:15,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:04:15,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:04:15,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-13 14:04:15,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2024-11-13 14:04:15,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:04:15,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-13 14:04:15,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:04:16,184 INFO L124 PetriNetUnfolderBase]: 693/1027 cut-off events. [2024-11-13 14:04:16,185 INFO L125 PetriNetUnfolderBase]: For 610/610 co-relation queries the response was YES. [2024-11-13 14:04:16,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2981 conditions, 1027 events. 693/1027 cut-off events. For 610/610 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3615 event pairs, 291 based on Foata normal form. 1/813 useless extension candidates. Maximal degree in co-relation 2925. Up to 642 conditions per place. [2024-11-13 14:04:16,197 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 65 selfloop transitions, 7 changer transitions 9/82 dead transitions. [2024-11-13 14:04:16,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 82 transitions, 482 flow [2024-11-13 14:04:16,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:04:16,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 14:04:16,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-11-13 14:04:16,201 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4494949494949495 [2024-11-13 14:04:16,202 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 160 flow. Second operand 6 states and 89 transitions. [2024-11-13 14:04:16,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 82 transitions, 482 flow [2024-11-13 14:04:16,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 82 transitions, 453 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-13 14:04:16,209 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 192 flow [2024-11-13 14:04:16,209 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-11-13 14:04:16,214 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 15 predicate places. [2024-11-13 14:04:16,214 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 192 flow [2024-11-13 14:04:16,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2024-11-13 14:04:16,214 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:04:16,215 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] [2024-11-13 14:04:16,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:04:16,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:04:16,415 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)] === [2024-11-13 14:04:16,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:04:16,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1599146066, now seen corresponding path program 3 times [2024-11-13 14:04:16,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:04:16,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4034467] [2024-11-13 14:04:16,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:04:16,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:04:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:04:16,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 14:04:16,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:04:16,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4034467] [2024-11-13 14:04:16,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4034467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:04:16,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614357855] [2024-11-13 14:04:16,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:04:16,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:04:16,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:04:16,755 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:04:16,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:04:16,909 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 14:04:16,909 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:04:16,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 14:04:16,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:04:17,002 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:04:17,004 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:04:17,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614357855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:04:17,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:04:17,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-11-13 14:04:17,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784159418] [2024-11-13 14:04:17,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:04:17,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:04:17,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:04:17,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:04:17,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:04:17,008 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-13 14:04:17,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2024-11-13 14:04:17,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:04:17,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-13 14:04:17,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:04:17,404 INFO L124 PetriNetUnfolderBase]: 748/1101 cut-off events. [2024-11-13 14:04:17,404 INFO L125 PetriNetUnfolderBase]: For 1216/1216 co-relation queries the response was YES. [2024-11-13 14:04:17,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3676 conditions, 1101 events. 748/1101 cut-off events. For 1216/1216 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3938 event pairs, 366 based on Foata normal form. 1/930 useless extension candidates. Maximal degree in co-relation 3648. Up to 827 conditions per place. [2024-11-13 14:04:17,414 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 61 selfloop transitions, 11 changer transitions 9/82 dead transitions. [2024-11-13 14:04:17,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 82 transitions, 520 flow [2024-11-13 14:04:17,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:04:17,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 14:04:17,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-11-13 14:04:17,416 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4494949494949495 [2024-11-13 14:04:17,416 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 192 flow. Second operand 6 states and 89 transitions. [2024-11-13 14:04:17,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 82 transitions, 520 flow [2024-11-13 14:04:17,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 82 transitions, 494 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-13 14:04:17,428 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 263 flow [2024-11-13 14:04:17,428 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2024-11-13 14:04:17,432 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 21 predicate places. [2024-11-13 14:04:17,432 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 263 flow [2024-11-13 14:04:17,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2024-11-13 14:04:17,432 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:04:17,432 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] [2024-11-13 14:04:17,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 14:04:17,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:04:17,633 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)] === [2024-11-13 14:04:17,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:04:17,634 INFO L85 PathProgramCache]: Analyzing trace with hash 537306102, now seen corresponding path program 4 times [2024-11-13 14:04:17,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:04:17,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386753250] [2024-11-13 14:04:17,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:04:17,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:04:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:04:17,977 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:04:17,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:04:17,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386753250] [2024-11-13 14:04:17,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386753250] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:04:17,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918991092] [2024-11-13 14:04:17,977 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:04:17,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:04:17,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:04:17,980 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:04:17,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:04:18,123 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:04:18,123 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:04:18,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:04:18,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:04:18,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:04:18,242 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:04:18,339 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:04:18,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918991092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:04:18,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:04:18,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-13 14:04:18,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640318787] [2024-11-13 14:04:18,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:04:18,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 14:04:18,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:04:18,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 14:04:18,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-13 14:04:18,341 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-13 14:04:18,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 263 flow. Second operand has 14 states, 14 states have (on average 7.357142857142857) internal successors, (103), 14 states have internal predecessors, (103), 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) [2024-11-13 14:04:18,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:04:18,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-13 14:04:18,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:04:19,312 INFO L124 PetriNetUnfolderBase]: 750/1114 cut-off events. [2024-11-13 14:04:19,313 INFO L125 PetriNetUnfolderBase]: For 2237/2237 co-relation queries the response was YES. [2024-11-13 14:04:19,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4076 conditions, 1114 events. 750/1114 cut-off events. For 2237/2237 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4233 event pairs, 132 based on Foata normal form. 10/950 useless extension candidates. Maximal degree in co-relation 4041. Up to 332 conditions per place. [2024-11-13 14:04:19,324 INFO L140 encePairwiseOnDemand]: 16/33 looper letters, 89 selfloop transitions, 61 changer transitions 0/151 dead transitions. [2024-11-13 14:04:19,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 151 transitions, 1102 flow [2024-11-13 14:04:19,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 14:04:19,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-13 14:04:19,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 195 transitions. [2024-11-13 14:04:19,327 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31100478468899523 [2024-11-13 14:04:19,327 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 263 flow. Second operand 19 states and 195 transitions. [2024-11-13 14:04:19,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 151 transitions, 1102 flow [2024-11-13 14:04:19,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 151 transitions, 1016 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-11-13 14:04:19,345 INFO L231 Difference]: Finished difference. Result has 73 places, 87 transitions, 691 flow [2024-11-13 14:04:19,345 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=691, PETRI_PLACES=73, PETRI_TRANSITIONS=87} [2024-11-13 14:04:19,346 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 41 predicate places. [2024-11-13 14:04:19,346 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 87 transitions, 691 flow [2024-11-13 14:04:19,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.357142857142857) internal successors, (103), 14 states have internal predecessors, (103), 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) [2024-11-13 14:04:19,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:04:19,348 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] [2024-11-13 14:04:19,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 14:04:19,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:04:19,549 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)] === [2024-11-13 14:04:19,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:04:19,549 INFO L85 PathProgramCache]: Analyzing trace with hash 878561122, now seen corresponding path program 5 times [2024-11-13 14:04:19,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:04:19,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120278585] [2024-11-13 14:04:19,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:04:19,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:04:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:04:19,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:04:19,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:04:19,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120278585] [2024-11-13 14:04:19,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120278585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:04:19,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085317210] [2024-11-13 14:04:19,863 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:04:19,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:04:19,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:04:19,869 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:04:19,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:04:20,027 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:04:20,027 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:04:20,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:04:20,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:04:20,156 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:04:20,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:04:20,250 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:04:20,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085317210] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:04:20,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:04:20,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-13 14:04:20,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124109150] [2024-11-13 14:04:20,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:04:20,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 14:04:20,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:04:20,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 14:04:20,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-13 14:04:20,253 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-13 14:04:20,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 87 transitions, 691 flow. Second operand has 15 states, 15 states have (on average 7.533333333333333) internal successors, (113), 15 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) [2024-11-13 14:04:20,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:04:20,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-13 14:04:20,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:04:21,192 INFO L124 PetriNetUnfolderBase]: 737/1088 cut-off events. [2024-11-13 14:04:21,192 INFO L125 PetriNetUnfolderBase]: For 3644/3644 co-relation queries the response was YES. [2024-11-13 14:04:21,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4696 conditions, 1088 events. 737/1088 cut-off events. For 3644/3644 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4023 event pairs, 164 based on Foata normal form. 9/997 useless extension candidates. Maximal degree in co-relation 4625. Up to 410 conditions per place. [2024-11-13 14:04:21,205 INFO L140 encePairwiseOnDemand]: 16/33 looper letters, 74 selfloop transitions, 65 changer transitions 0/140 dead transitions. [2024-11-13 14:04:21,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 140 transitions, 1213 flow [2024-11-13 14:04:21,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 14:04:21,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 14:04:21,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 156 transitions. [2024-11-13 14:04:21,207 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3151515151515151 [2024-11-13 14:04:21,207 INFO L175 Difference]: Start difference. First operand has 73 places, 87 transitions, 691 flow. Second operand 15 states and 156 transitions. [2024-11-13 14:04:21,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 140 transitions, 1213 flow [2024-11-13 14:04:21,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 140 transitions, 1114 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-11-13 14:04:21,236 INFO L231 Difference]: Finished difference. Result has 81 places, 102 transitions, 857 flow [2024-11-13 14:04:21,238 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=857, PETRI_PLACES=81, PETRI_TRANSITIONS=102} [2024-11-13 14:04:21,239 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 49 predicate places. [2024-11-13 14:04:21,240 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 102 transitions, 857 flow [2024-11-13 14:04:21,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.533333333333333) internal successors, (113), 15 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) [2024-11-13 14:04:21,240 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:04:21,240 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] [2024-11-13 14:04:21,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:04:21,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:04:21,445 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)] === [2024-11-13 14:04:21,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:04:21,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1148230684, now seen corresponding path program 6 times [2024-11-13 14:04:21,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:04:21,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670260210] [2024-11-13 14:04:21,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:04:21,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:04:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:04:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:04:21,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:04:21,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670260210] [2024-11-13 14:04:21,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670260210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:04:21,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632304932] [2024-11-13 14:04:21,694 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:04:21,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:04:21,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:04:21,696 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:04:21,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:04:21,844 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-13 14:04:21,844 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:04:21,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 14:04:21,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:04:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 14:04:21,928 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:04:21,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632304932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:04:21,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:04:21,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-11-13 14:04:21,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424809855] [2024-11-13 14:04:21,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:04:21,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:04:21,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:04:21,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:04:21,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:04:21,930 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-13 14:04:21,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 102 transitions, 857 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2024-11-13 14:04:21,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:04:21,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-13 14:04:21,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:04:22,318 INFO L124 PetriNetUnfolderBase]: 737/1086 cut-off events. [2024-11-13 14:04:22,319 INFO L125 PetriNetUnfolderBase]: For 4376/4376 co-relation queries the response was YES. [2024-11-13 14:04:22,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4857 conditions, 1086 events. 737/1086 cut-off events. For 4376/4376 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3943 event pairs, 267 based on Foata normal form. 1/987 useless extension candidates. Maximal degree in co-relation 4785. Up to 820 conditions per place. [2024-11-13 14:04:22,330 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 82 selfloop transitions, 32 changer transitions 10/125 dead transitions. [2024-11-13 14:04:22,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 125 transitions, 1186 flow [2024-11-13 14:04:22,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:04:22,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 14:04:22,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-11-13 14:04:22,332 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-11-13 14:04:22,332 INFO L175 Difference]: Start difference. First operand has 81 places, 102 transitions, 857 flow. Second operand 6 states and 87 transitions. [2024-11-13 14:04:22,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 125 transitions, 1186 flow [2024-11-13 14:04:22,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 125 transitions, 1087 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-11-13 14:04:22,356 INFO L231 Difference]: Finished difference. Result has 80 places, 98 transitions, 782 flow [2024-11-13 14:04:22,356 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=782, PETRI_PLACES=80, PETRI_TRANSITIONS=98} [2024-11-13 14:04:22,357 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 48 predicate places. [2024-11-13 14:04:22,357 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 98 transitions, 782 flow [2024-11-13 14:04:22,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2024-11-13 14:04:22,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:04:22,358 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] [2024-11-13 14:04:22,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 14:04:22,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 14:04:22,562 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)] === [2024-11-13 14:04:22,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:04:22,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1011500738, now seen corresponding path program 1 times [2024-11-13 14:04:22,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:04:22,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338320504] [2024-11-13 14:04:22,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:04:22,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:04:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:04:24,947 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 14:04:24,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:04:24,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338320504] [2024-11-13 14:04:24,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338320504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:04:24,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512761069] [2024-11-13 14:04:24,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:04:24,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:04:24,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:04:24,951 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:04:24,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1720016b-3ac9-454f-81ec-a74de111f723/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:04:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:04:25,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 14:04:25,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:04:25,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-13 14:04:25,254 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-13 14:04:25,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-13 14:04:25,352 INFO L349 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2024-11-13 14:04:25,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2024-11-13 14:04:25,469 INFO L349 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2024-11-13 14:04:25,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 25 [2024-11-13 14:04:25,727 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-13 14:04:25,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 24 [2024-11-13 14:04:26,000 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-13 14:04:26,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 36 [2024-11-13 14:04:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 14:04:26,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:05:10,253 INFO L349 Elim1Store]: treesize reduction 102, result has 71.5 percent of original size [2024-11-13 14:05:10,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 1678 treesize of output 973 [2024-11-13 14:05:10,549 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:05:10,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1058 treesize of output 1010 [2024-11-13 14:05:10,915 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-13 14:05:10,918 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 17 treesize of output 9 [2024-11-13 14:05:11,916 INFO L349 Elim1Store]: treesize reduction 16, result has 71.9 percent of original size [2024-11-13 14:05:11,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 65 [2024-11-13 14:05:12,129 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-13 14:05:12,129 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 25 treesize of output 17 [2024-11-13 14:05:12,793 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-13 14:05:12,793 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 25 treesize of output 17 [2024-11-13 14:06:27,455 WARN L286 SmtUtils]: Spent 5.86s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)