./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC --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 68585835b92043bfb2f3c62590e96ff685993869f8a251aecd9fe4c8aaea0e1e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:57:30,800 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:57:30,923 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:57:30,932 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:57:30,937 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:57:30,978 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:57:30,979 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:57:30,979 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:57:30,979 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:57:30,980 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:57:30,980 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:57:30,980 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:57:30,981 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:57:30,981 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:57:30,981 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:57:30,981 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:57:30,981 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:57:30,982 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:57:30,982 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:57:30,982 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:57:30,982 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:57:30,982 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:57:30,983 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:57:30,983 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:57:30,983 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:57:30,983 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:57:30,983 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:57:30,983 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:57:30,984 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:57:30,984 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:57:30,984 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:57:30,984 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:57:30,984 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:57:30,985 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:57:30,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:57:30,985 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:57:30,985 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:57:30,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:57:30,985 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:57:30,986 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:57:30,986 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:57:30,986 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:57:30,986 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:57:30,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:57:30,987 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:57:30,987 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:57:30,987 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:57:30,987 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:57:30,987 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_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC 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 -> 68585835b92043bfb2f3c62590e96ff685993869f8a251aecd9fe4c8aaea0e1e [2024-11-23 23:57:31,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:57:31,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:57:31,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:57:31,414 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:57:31,415 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:57:31,416 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i [2024-11-23 23:57:34,783 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/data/447f7d6d1/32abea20387e41758c25e55a86bef6c6/FLAG3a0717523 [2024-11-23 23:57:35,128 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:57:35,129 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i [2024-11-23 23:57:35,159 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/data/447f7d6d1/32abea20387e41758c25e55a86bef6c6/FLAG3a0717523 [2024-11-23 23:57:35,358 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/data/447f7d6d1/32abea20387e41758c25e55a86bef6c6 [2024-11-23 23:57:35,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:57:35,362 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:57:35,364 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:57:35,364 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:57:35,369 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:57:35,371 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:57:35" (1/1) ... [2024-11-23 23:57:35,372 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2109be8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:35, skipping insertion in model container [2024-11-23 23:57:35,372 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:57:35" (1/1) ... [2024-11-23 23:57:35,390 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:57:35,577 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_84f178f2-744d-4ac2-a9af-5eacd07990db/sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i[820,833] [2024-11-23 23:57:35,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:57:35,614 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:57:35,629 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_84f178f2-744d-4ac2-a9af-5eacd07990db/sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i[820,833] [2024-11-23 23:57:35,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:57:35,662 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:57:35,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:35 WrapperNode [2024-11-23 23:57:35,664 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:57:35,665 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:57:35,665 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:57:35,665 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:57:35,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:35" (1/1) ... [2024-11-23 23:57:35,686 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:35" (1/1) ... [2024-11-23 23:57:35,706 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2024-11-23 23:57:35,708 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:57:35,709 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:57:35,710 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:57:35,710 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:57:35,718 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:35" (1/1) ... [2024-11-23 23:57:35,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:35" (1/1) ... [2024-11-23 23:57:35,720 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:35" (1/1) ... [2024-11-23 23:57:35,731 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-23 23:57:35,731 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:35" (1/1) ... [2024-11-23 23:57:35,731 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:35" (1/1) ... [2024-11-23 23:57:35,737 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:35" (1/1) ... [2024-11-23 23:57:35,737 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:35" (1/1) ... [2024-11-23 23:57:35,741 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:35" (1/1) ... [2024-11-23 23:57:35,742 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:35" (1/1) ... [2024-11-23 23:57:35,743 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:35" (1/1) ... [2024-11-23 23:57:35,745 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:57:35,746 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:57:35,746 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:57:35,746 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:57:35,747 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:35" (1/1) ... [2024-11-23 23:57:35,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:57:35,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:57:35,783 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:57:35,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:57:35,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:57:35,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:57:35,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 23:57:35,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 23:57:35,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 23:57:35,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 23:57:35,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:57:35,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:57:35,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 23:57:35,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 23:57:35,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 23:57:35,878 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:57:35,881 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:57:36,037 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-23 23:57:36,037 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:57:36,046 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:57:36,047 INFO L312 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-23 23:57:36,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:57:36 BoogieIcfgContainer [2024-11-23 23:57:36,047 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:57:36,050 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:57:36,050 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:57:36,055 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:57:36,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:57:35" (1/3) ... [2024-11-23 23:57:36,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d213982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:57:36, skipping insertion in model container [2024-11-23 23:57:36,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:57:35" (2/3) ... [2024-11-23 23:57:36,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d213982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:57:36, skipping insertion in model container [2024-11-23 23:57:36,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:57:36" (3/3) ... [2024-11-23 23:57:36,057 INFO L128 eAbstractionObserver]: Analyzing ICFG sorting_bubblesort_ground-1.i [2024-11-23 23:57:36,073 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:57:36,075 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sorting_bubblesort_ground-1.i that has 1 procedures, 26 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2024-11-23 23:57:36,131 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:57:36,151 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;@3d786e18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:57:36,151 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:57:36,156 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 25 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) [2024-11-23 23:57:36,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-23 23:57:36,164 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:57:36,165 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:57:36,165 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:57:36,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:57:36,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1205302859, now seen corresponding path program 1 times [2024-11-23 23:57:36,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:57:36,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515611891] [2024-11-23 23:57:36,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:57:36,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:57:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:57:36,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:57:36,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:57:36,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515611891] [2024-11-23 23:57:36,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515611891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:57:36,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:57:36,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:57:36,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456710130] [2024-11-23 23:57:36,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:57:36,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:57:36,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:57:36,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:57:36,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:57:36,506 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 25 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) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-11-23 23:57:36,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:57:36,563 INFO L93 Difference]: Finished difference Result 50 states and 72 transitions. [2024-11-23 23:57:36,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:57:36,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) Word has length 12 [2024-11-23 23:57:36,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:57:36,576 INFO L225 Difference]: With dead ends: 50 [2024-11-23 23:57:36,576 INFO L226 Difference]: Without dead ends: 24 [2024-11-23 23:57:36,580 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:57:36,583 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:57:36,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:57:36,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-23 23:57:36,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2024-11-23 23:57:36,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 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) [2024-11-23 23:57:36,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2024-11-23 23:57:36,631 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 12 [2024-11-23 23:57:36,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:57:36,632 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2024-11-23 23:57:36,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2024-11-23 23:57:36,632 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2024-11-23 23:57:36,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-23 23:57:36,635 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:57:36,636 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:57:36,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:57:36,637 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:57:36,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:57:36,639 INFO L85 PathProgramCache]: Analyzing trace with hash -368722126, now seen corresponding path program 1 times [2024-11-23 23:57:36,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:57:36,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147186484] [2024-11-23 23:57:36,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:57:36,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:57:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:57:36,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:57:36,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:57:36,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147186484] [2024-11-23 23:57:36,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147186484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:57:36,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373639414] [2024-11-23 23:57:36,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:57:36,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:36,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:57:36,836 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:57:36,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:57:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:57:36,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 23:57:36,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:57:36,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 23:57:36,997 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:57:36,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373639414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:57:36,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:57:36,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-23 23:57:37,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148910038] [2024-11-23 23:57:37,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:57:37,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:57:37,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:57:37,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:57:37,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:57:37,003 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-11-23 23:57:37,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:57:37,031 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2024-11-23 23:57:37,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:57:37,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) Word has length 14 [2024-11-23 23:57:37,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:57:37,035 INFO L225 Difference]: With dead ends: 39 [2024-11-23 23:57:37,035 INFO L226 Difference]: Without dead ends: 29 [2024-11-23 23:57:37,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:57:37,037 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:57:37,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 53 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:57:37,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-23 23:57:37,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-23 23:57:37,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 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) [2024-11-23 23:57:37,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-11-23 23:57:37,074 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 14 [2024-11-23 23:57:37,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:57:37,075 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-11-23 23:57:37,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-11-23 23:57:37,075 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-11-23 23:57:37,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-23 23:57:37,076 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:57:37,076 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:57:37,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:57:37,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:37,281 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:57:37,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:57:37,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1959168573, now seen corresponding path program 1 times [2024-11-23 23:57:37,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:57:37,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039972288] [2024-11-23 23:57:37,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:57:37,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:57:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:57:37,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 23:57:37,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:57:37,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039972288] [2024-11-23 23:57:37,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039972288] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:57:37,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798478071] [2024-11-23 23:57:37,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:57:37,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:37,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:57:37,399 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:57:37,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:57:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:57:37,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-23 23:57:37,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:57:37,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 23:57:37,496 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:57:37,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798478071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:57:37,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:57:37,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-23 23:57:37,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989237602] [2024-11-23 23:57:37,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:57:37,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:57:37,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:57:37,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:57:37,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:57:37,498 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2024-11-23 23:57:37,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:57:37,540 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2024-11-23 23:57:37,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:57:37,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) Word has length 18 [2024-11-23 23:57:37,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:57:37,543 INFO L225 Difference]: With dead ends: 57 [2024-11-23 23:57:37,543 INFO L226 Difference]: Without dead ends: 34 [2024-11-23 23:57:37,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:57:37,546 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:57:37,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 42 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:57:37,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-23 23:57:37,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2024-11-23 23:57:37,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 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) [2024-11-23 23:57:37,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-11-23 23:57:37,556 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 18 [2024-11-23 23:57:37,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:57:37,556 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-11-23 23:57:37,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2024-11-23 23:57:37,557 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-11-23 23:57:37,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-23 23:57:37,558 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:57:37,559 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:57:37,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 23:57:37,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:37,759 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:57:37,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:57:37,760 INFO L85 PathProgramCache]: Analyzing trace with hash -643840535, now seen corresponding path program 1 times [2024-11-23 23:57:37,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:57:37,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152636929] [2024-11-23 23:57:37,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:57:37,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:57:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:57:37,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 23:57:37,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:57:37,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152636929] [2024-11-23 23:57:37,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152636929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:57:37,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280491083] [2024-11-23 23:57:37,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:57:37,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:37,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:57:37,880 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:57:37,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:57:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:57:37,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:57:37,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:57:37,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 23:57:37,990 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:57:38,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 23:57:38,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280491083] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:57:38,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:57:38,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-23 23:57:38,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309534993] [2024-11-23 23:57:38,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:57:38,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:57:38,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:57:38,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:57:38,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:57:38,030 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2024-11-23 23:57:38,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:57:38,072 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2024-11-23 23:57:38,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:57:38,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) Word has length 22 [2024-11-23 23:57:38,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:57:38,076 INFO L225 Difference]: With dead ends: 61 [2024-11-23 23:57:38,076 INFO L226 Difference]: Without dead ends: 36 [2024-11-23 23:57:38,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:57:38,077 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:57:38,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 69 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:57:38,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-23 23:57:38,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-23 23:57:38,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 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) [2024-11-23 23:57:38,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2024-11-23 23:57:38,087 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 22 [2024-11-23 23:57:38,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:57:38,087 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2024-11-23 23:57:38,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2024-11-23 23:57:38,087 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2024-11-23 23:57:38,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-23 23:57:38,088 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:57:38,088 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:57:38,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:57:38,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:38,289 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:57:38,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:57:38,289 INFO L85 PathProgramCache]: Analyzing trace with hash 2029353397, now seen corresponding path program 2 times [2024-11-23 23:57:38,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:57:38,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497773074] [2024-11-23 23:57:38,290 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:57:38,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:57:38,316 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:57:38,316 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:57:38,409 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-23 23:57:38,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:57:38,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497773074] [2024-11-23 23:57:38,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497773074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:57:38,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632293341] [2024-11-23 23:57:38,410 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:57:38,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:38,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:57:38,416 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:57:38,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:57:38,509 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:57:38,509 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:57:38,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:57:38,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:57:38,608 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 23:57:38,608 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:57:38,727 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 23:57:38,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632293341] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:57:38,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:57:38,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-23 23:57:38,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799441695] [2024-11-23 23:57:38,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:57:38,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 23:57:38,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:57:38,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 23:57:38,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:57:38,733 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 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) [2024-11-23 23:57:38,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:57:38,888 INFO L93 Difference]: Finished difference Result 85 states and 109 transitions. [2024-11-23 23:57:38,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 23:57:38,892 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 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) Word has length 28 [2024-11-23 23:57:38,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:57:38,893 INFO L225 Difference]: With dead ends: 85 [2024-11-23 23:57:38,893 INFO L226 Difference]: Without dead ends: 60 [2024-11-23 23:57:38,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:57:38,894 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:57:38,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 165 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:57:38,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-23 23:57:38,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2024-11-23 23:57:38,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.169811320754717) internal successors, (62), 53 states have internal predecessors, (62), 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) [2024-11-23 23:57:38,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2024-11-23 23:57:38,905 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 28 [2024-11-23 23:57:38,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:57:38,906 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2024-11-23 23:57:38,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 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) [2024-11-23 23:57:38,906 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2024-11-23 23:57:38,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-23 23:57:38,907 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:57:38,907 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:57:38,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:57:39,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:39,107 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:57:39,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:57:39,108 INFO L85 PathProgramCache]: Analyzing trace with hash -332299917, now seen corresponding path program 3 times [2024-11-23 23:57:39,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:57:39,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805261703] [2024-11-23 23:57:39,108 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:57:39,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:57:39,163 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-23 23:57:39,163 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:57:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-23 23:57:39,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:57:39,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805261703] [2024-11-23 23:57:39,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805261703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:57:39,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397255855] [2024-11-23 23:57:39,296 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:57:39,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:39,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:57:39,298 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:57:39,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:57:39,401 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-23 23:57:39,401 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:57:39,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:57:39,405 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:57:39,442 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-23 23:57:39,443 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:57:39,496 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-23 23:57:39,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397255855] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:57:39,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:57:39,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-23 23:57:39,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610637339] [2024-11-23 23:57:39,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:57:39,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:57:39,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:57:39,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:57:39,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:57:39,499 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:57:39,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:57:39,562 INFO L93 Difference]: Finished difference Result 116 states and 147 transitions. [2024-11-23 23:57:39,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:57:39,563 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-23 23:57:39,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:57:39,564 INFO L225 Difference]: With dead ends: 116 [2024-11-23 23:57:39,564 INFO L226 Difference]: Without dead ends: 86 [2024-11-23 23:57:39,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:57:39,565 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 20 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:57:39,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 47 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:57:39,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-23 23:57:39,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-23 23:57:39,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.2) internal successors, (102), 85 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:57:39,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2024-11-23 23:57:39,575 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 44 [2024-11-23 23:57:39,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:57:39,576 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2024-11-23 23:57:39,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:57:39,576 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2024-11-23 23:57:39,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-23 23:57:39,577 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:57:39,577 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:57:39,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 23:57:39,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:39,778 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:57:39,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:57:39,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1289768971, now seen corresponding path program 4 times [2024-11-23 23:57:39,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:57:39,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686385499] [2024-11-23 23:57:39,779 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 23:57:39,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:57:39,823 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 23:57:39,823 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:57:40,530 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 1 proven. 38 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-23 23:57:40,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:57:40,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686385499] [2024-11-23 23:57:40,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686385499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:57:40,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035032399] [2024-11-23 23:57:40,533 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 23:57:40,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:40,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:57:40,535 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:57:40,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:57:40,631 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 23:57:40,631 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:57:40,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 23:57:40,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:57:40,987 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 23:57:40,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 10 [2024-11-23 23:57:41,027 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-23 23:57:41,028 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:57:41,304 INFO L349 Elim1Store]: treesize reduction 13, result has 60.6 percent of original size [2024-11-23 23:57:41,304 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 36 treesize of output 28 [2024-11-23 23:57:41,361 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-23 23:57:41,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035032399] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:57:41,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:57:41,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 16 [2024-11-23 23:57:41,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514851680] [2024-11-23 23:57:41,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:57:41,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 23:57:41,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:57:41,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 23:57:41,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:57:41,364 INFO L87 Difference]: Start difference. First operand 86 states and 102 transitions. Second operand has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:57:41,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:57:41,674 INFO L93 Difference]: Finished difference Result 185 states and 225 transitions. [2024-11-23 23:57:41,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:57:41,675 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-23 23:57:41,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:57:41,677 INFO L225 Difference]: With dead ends: 185 [2024-11-23 23:57:41,678 INFO L226 Difference]: Without dead ends: 123 [2024-11-23 23:57:41,678 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 112 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:57:41,679 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 42 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:57:41,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 146 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:57:41,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-23 23:57:41,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 115. [2024-11-23 23:57:41,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.1929824561403508) internal successors, (136), 114 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:57:41,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 136 transitions. [2024-11-23 23:57:41,696 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 136 transitions. Word has length 60 [2024-11-23 23:57:41,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:57:41,697 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 136 transitions. [2024-11-23 23:57:41,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:57:41,697 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 136 transitions. [2024-11-23 23:57:41,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-23 23:57:41,699 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:57:41,699 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:57:41,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-23 23:57:41,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:41,904 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:57:41,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:57:41,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1304529873, now seen corresponding path program 1 times [2024-11-23 23:57:41,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:57:41,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9766326] [2024-11-23 23:57:41,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:57:41,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:57:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:57:42,385 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-23 23:57:42,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:57:42,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9766326] [2024-11-23 23:57:42,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9766326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:57:42,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551321287] [2024-11-23 23:57:42,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:57:42,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:42,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:57:42,388 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:57:42,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:57:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:57:42,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-23 23:57:42,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:57:42,604 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-23 23:57:42,608 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:57:42,908 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-23 23:57:42,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551321287] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:57:42,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:57:42,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-23 23:57:42,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521885897] [2024-11-23 23:57:42,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:57:42,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-23 23:57:42,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:57:42,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-23 23:57:42,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:57:42,910 INFO L87 Difference]: Start difference. First operand 115 states and 136 transitions. Second operand has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:57:43,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:57:43,018 INFO L93 Difference]: Finished difference Result 231 states and 284 transitions. [2024-11-23 23:57:43,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-23 23:57:43,019 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-23 23:57:43,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:57:43,021 INFO L225 Difference]: With dead ends: 231 [2024-11-23 23:57:43,022 INFO L226 Difference]: Without dead ends: 139 [2024-11-23 23:57:43,023 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:57:43,025 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:57:43,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 91 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:57:43,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-23 23:57:43,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2024-11-23 23:57:43,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.1594202898550725) internal successors, (160), 138 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:57:43,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 160 transitions. [2024-11-23 23:57:43,053 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 160 transitions. Word has length 64 [2024-11-23 23:57:43,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:57:43,054 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 160 transitions. [2024-11-23 23:57:43,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:57:43,057 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 160 transitions. [2024-11-23 23:57:43,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-23 23:57:43,062 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:57:43,062 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:57:43,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-23 23:57:43,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:43,263 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:57:43,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:57:43,263 INFO L85 PathProgramCache]: Analyzing trace with hash -800675583, now seen corresponding path program 2 times [2024-11-23 23:57:43,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:57:43,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028812548] [2024-11-23 23:57:43,263 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:57:43,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:57:43,318 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:57:43,319 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:57:44,154 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-23 23:57:44,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:57:44,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028812548] [2024-11-23 23:57:44,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028812548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:57:44,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549297085] [2024-11-23 23:57:44,155 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:57:44,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:44,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:57:44,158 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:57:44,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:57:44,365 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:57:44,365 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:57:44,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-23 23:57:44,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:57:44,512 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-23 23:57:44,512 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:57:45,609 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-23 23:57:45,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549297085] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:57:45,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:57:45,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-23 23:57:45,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528596469] [2024-11-23 23:57:45,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:57:45,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-23 23:57:45,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:57:45,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-23 23:57:45,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-23 23:57:45,613 INFO L87 Difference]: Start difference. First operand 139 states and 160 transitions. Second operand has 49 states, 49 states have (on average 2.3469387755102042) internal successors, (115), 49 states have internal predecessors, (115), 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) [2024-11-23 23:57:45,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:57:45,824 INFO L93 Difference]: Finished difference Result 279 states and 344 transitions. [2024-11-23 23:57:45,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-23 23:57:45,825 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.3469387755102042) internal successors, (115), 49 states have internal predecessors, (115), 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) Word has length 88 [2024-11-23 23:57:45,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:57:45,826 INFO L225 Difference]: With dead ends: 279 [2024-11-23 23:57:45,826 INFO L226 Difference]: Without dead ends: 187 [2024-11-23 23:57:45,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-23 23:57:45,828 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:57:45,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 157 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:57:45,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-23 23:57:45,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2024-11-23 23:57:45,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.118279569892473) internal successors, (208), 186 states have internal predecessors, (208), 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) [2024-11-23 23:57:45,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 208 transitions. [2024-11-23 23:57:45,848 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 208 transitions. Word has length 88 [2024-11-23 23:57:45,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:57:45,848 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 208 transitions. [2024-11-23 23:57:45,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.3469387755102042) internal successors, (115), 49 states have internal predecessors, (115), 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) [2024-11-23 23:57:45,848 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 208 transitions. [2024-11-23 23:57:45,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-23 23:57:45,850 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:57:45,850 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:57:45,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-23 23:57:46,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:46,055 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:57:46,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:57:46,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1705561247, now seen corresponding path program 3 times [2024-11-23 23:57:46,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:57:46,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545175885] [2024-11-23 23:57:46,057 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:57:46,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:57:46,143 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-23 23:57:46,143 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:57:46,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2186 backedges. 1 proven. 66 refuted. 0 times theorem prover too weak. 2119 trivial. 0 not checked. [2024-11-23 23:57:46,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:57:46,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545175885] [2024-11-23 23:57:46,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545175885] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:57:46,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245215604] [2024-11-23 23:57:46,299 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:57:46,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:46,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:57:46,301 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:57:46,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 23:57:46,481 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-23 23:57:46,481 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:57:46,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 23:57:46,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:57:46,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2186 backedges. 1 proven. 66 refuted. 0 times theorem prover too weak. 2119 trivial. 0 not checked. [2024-11-23 23:57:46,564 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:57:46,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2186 backedges. 1 proven. 66 refuted. 0 times theorem prover too weak. 2119 trivial. 0 not checked. [2024-11-23 23:57:46,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245215604] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:57:46,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:57:46,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-23 23:57:46,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886069145] [2024-11-23 23:57:46,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:57:46,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 23:57:46,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:57:46,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 23:57:46,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-23 23:57:46,738 INFO L87 Difference]: Start difference. First operand 187 states and 208 transitions. Second operand has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:57:46,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:57:46,888 INFO L93 Difference]: Finished difference Result 374 states and 463 transitions. [2024-11-23 23:57:46,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-23 23:57:46,891 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2024-11-23 23:57:46,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:57:46,893 INFO L225 Difference]: With dead ends: 374 [2024-11-23 23:57:46,893 INFO L226 Difference]: Without dead ends: 283 [2024-11-23 23:57:46,894 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-23 23:57:46,894 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 33 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:57:46,896 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 127 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:57:46,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-23 23:57:46,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2024-11-23 23:57:46,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.1631205673758864) internal successors, (328), 282 states have internal predecessors, (328), 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) [2024-11-23 23:57:46,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 328 transitions. [2024-11-23 23:57:46,926 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 328 transitions. Word has length 136 [2024-11-23 23:57:46,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:57:46,927 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 328 transitions. [2024-11-23 23:57:46,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:57:46,927 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 328 transitions. [2024-11-23 23:57:46,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-23 23:57:46,934 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:57:46,934 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 14, 14, 14, 14, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:57:46,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 23:57:47,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:47,135 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:57:47,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:57:47,136 INFO L85 PathProgramCache]: Analyzing trace with hash 854059153, now seen corresponding path program 4 times [2024-11-23 23:57:47,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:57:47,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942998574] [2024-11-23 23:57:47,136 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 23:57:47,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:57:47,197 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 23:57:47,197 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:57:48,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2498 backedges. 1 proven. 105 refuted. 0 times theorem prover too weak. 2392 trivial. 0 not checked. [2024-11-23 23:57:48,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:57:48,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942998574] [2024-11-23 23:57:48,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942998574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:57:48,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290164130] [2024-11-23 23:57:48,158 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 23:57:48,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:48,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:57:48,161 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:57:48,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 23:57:48,330 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 23:57:48,331 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:57:48,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-23 23:57:48,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:57:49,166 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 23:57:49,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 13 [2024-11-23 23:57:49,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2498 backedges. 1 proven. 93 refuted. 0 times theorem prover too weak. 2404 trivial. 0 not checked. [2024-11-23 23:57:49,204 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:57:49,781 INFO L349 Elim1Store]: treesize reduction 13, result has 74.5 percent of original size [2024-11-23 23:57:49,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 56 treesize of output 49 [2024-11-23 23:57:49,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2498 backedges. 64 proven. 30 refuted. 0 times theorem prover too weak. 2404 trivial. 0 not checked. [2024-11-23 23:57:49,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290164130] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:57:49,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:57:49,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 29 [2024-11-23 23:57:49,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366105454] [2024-11-23 23:57:49,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:57:49,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-23 23:57:49,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:57:49,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-23 23:57:49,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2024-11-23 23:57:49,830 INFO L87 Difference]: Start difference. First operand 283 states and 328 transitions. Second operand has 29 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 29 states have internal predecessors, (77), 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) [2024-11-23 23:57:51,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:57:51,149 INFO L93 Difference]: Finished difference Result 377 states and 443 transitions. [2024-11-23 23:57:51,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-23 23:57:51,150 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 29 states have internal predecessors, (77), 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) Word has length 168 [2024-11-23 23:57:51,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:57:51,153 INFO L225 Difference]: With dead ends: 377 [2024-11-23 23:57:51,153 INFO L226 Difference]: Without dead ends: 368 [2024-11-23 23:57:51,155 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 319 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=318, Invalid=1752, Unknown=0, NotChecked=0, Total=2070 [2024-11-23 23:57:51,156 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 100 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:57:51,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 421 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:57:51,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-11-23 23:57:51,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 287. [2024-11-23 23:57:51,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.1608391608391608) internal successors, (332), 286 states have internal predecessors, (332), 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) [2024-11-23 23:57:51,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 332 transitions. [2024-11-23 23:57:51,178 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 332 transitions. Word has length 168 [2024-11-23 23:57:51,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:57:51,179 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 332 transitions. [2024-11-23 23:57:51,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.6551724137931036) internal successors, (77), 29 states have internal predecessors, (77), 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) [2024-11-23 23:57:51,179 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 332 transitions. [2024-11-23 23:57:51,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-23 23:57:51,182 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:57:51,182 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 14, 14, 14, 14, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:57:51,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-23 23:57:51,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:51,383 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:57:51,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:57:51,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1033728343, now seen corresponding path program 5 times [2024-11-23 23:57:51,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:57:51,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428126028] [2024-11-23 23:57:51,384 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 23:57:51,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:57:52,274 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-11-23 23:57:52,275 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:57:52,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2505 backedges. 1 proven. 378 refuted. 0 times theorem prover too weak. 2126 trivial. 0 not checked. [2024-11-23 23:57:52,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:57:52,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428126028] [2024-11-23 23:57:52,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428126028] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:57:52,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112195983] [2024-11-23 23:57:52,875 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 23:57:52,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:57:52,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:57:52,877 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:57:52,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 23:58:44,360 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-11-23 23:58:44,360 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:58:44,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 23:58:44,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:58:44,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2505 backedges. 1 proven. 378 refuted. 0 times theorem prover too weak. 2126 trivial. 0 not checked. [2024-11-23 23:58:44,522 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:58:45,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2505 backedges. 1 proven. 378 refuted. 0 times theorem prover too weak. 2126 trivial. 0 not checked. [2024-11-23 23:58:45,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112195983] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:58:45,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:58:45,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2024-11-23 23:58:45,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899955949] [2024-11-23 23:58:45,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:58:45,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-23 23:58:45,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:58:45,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-23 23:58:45,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2024-11-23 23:58:45,099 INFO L87 Difference]: Start difference. First operand 287 states and 332 transitions. Second operand has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 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) [2024-11-23 23:58:45,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:58:45,367 INFO L93 Difference]: Finished difference Result 670 states and 855 transitions. [2024-11-23 23:58:45,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-23 23:58:45,367 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 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) Word has length 172 [2024-11-23 23:58:45,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:58:45,370 INFO L225 Difference]: With dead ends: 670 [2024-11-23 23:58:45,370 INFO L226 Difference]: Without dead ends: 479 [2024-11-23 23:58:45,371 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2024-11-23 23:58:45,372 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 76 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:58:45,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 160 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:58:45,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2024-11-23 23:58:45,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2024-11-23 23:58:45,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.1966527196652719) internal successors, (572), 478 states have internal predecessors, (572), 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) [2024-11-23 23:58:45,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 572 transitions. [2024-11-23 23:58:45,399 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 572 transitions. Word has length 172 [2024-11-23 23:58:45,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:58:45,399 INFO L471 AbstractCegarLoop]: Abstraction has 479 states and 572 transitions. [2024-11-23 23:58:45,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 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) [2024-11-23 23:58:45,400 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 572 transitions. [2024-11-23 23:58:45,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-11-23 23:58:45,403 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:58:45,403 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 30, 30, 30, 30, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:58:45,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-23 23:58:45,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-23 23:58:45,604 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:58:45,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:58:45,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1619028919, now seen corresponding path program 6 times [2024-11-23 23:58:45,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:58:45,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91959581] [2024-11-23 23:58:45,604 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-23 23:58:45,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:58:45,828 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2024-11-23 23:58:45,828 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:58:47,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3897 backedges. 1 proven. 322 refuted. 0 times theorem prover too weak. 3574 trivial. 0 not checked. [2024-11-23 23:58:47,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:58:47,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91959581] [2024-11-23 23:58:47,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91959581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:58:47,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908434096] [2024-11-23 23:58:47,113 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-23 23:58:47,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:58:47,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:58:47,117 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:58:47,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 23:58:49,219 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2024-11-23 23:58:49,219 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:58:49,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-23 23:58:49,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:58:50,758 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 23:58:50,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2024-11-23 23:58:50,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3897 backedges. 1 proven. 322 refuted. 0 times theorem prover too weak. 3574 trivial. 0 not checked. [2024-11-23 23:58:50,802 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:58:52,036 INFO L349 Elim1Store]: treesize reduction 13, result has 73.5 percent of original size [2024-11-23 23:58:52,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 49 treesize of output 47 [2024-11-23 23:58:52,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3897 backedges. 28 proven. 295 refuted. 0 times theorem prover too weak. 3574 trivial. 0 not checked. [2024-11-23 23:58:52,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908434096] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:58:52,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:58:52,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 33 [2024-11-23 23:58:52,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393423088] [2024-11-23 23:58:52,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:58:52,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-23 23:58:52,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:58:52,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-23 23:58:52,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2024-11-23 23:58:52,113 INFO L87 Difference]: Start difference. First operand 479 states and 572 transitions. Second operand has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 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) [2024-11-23 23:58:52,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:58:52,870 INFO L93 Difference]: Finished difference Result 632 states and 762 transitions. [2024-11-23 23:58:52,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-23 23:58:52,871 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 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) Word has length 236 [2024-11-23 23:58:52,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:58:52,874 INFO L225 Difference]: With dead ends: 632 [2024-11-23 23:58:52,874 INFO L226 Difference]: Without dead ends: 623 [2024-11-23 23:58:52,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 453 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=228, Invalid=1412, Unknown=0, NotChecked=0, Total=1640 [2024-11-23 23:58:52,876 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 75 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:58:52,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 282 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:58:52,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2024-11-23 23:58:52,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 483. [2024-11-23 23:58:52,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.1950207468879668) internal successors, (576), 482 states have internal predecessors, (576), 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) [2024-11-23 23:58:52,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 576 transitions. [2024-11-23 23:58:52,927 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 576 transitions. Word has length 236 [2024-11-23 23:58:52,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:58:52,928 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 576 transitions. [2024-11-23 23:58:52,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0303030303030303) internal successors, (100), 33 states have internal predecessors, (100), 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) [2024-11-23 23:58:52,928 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 576 transitions. [2024-11-23 23:58:52,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-23 23:58:52,933 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:58:52,933 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 30, 30, 30, 30, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:58:52,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-23 23:58:53,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:58:53,134 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:58:53,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:58:53,135 INFO L85 PathProgramCache]: Analyzing trace with hash 391377277, now seen corresponding path program 7 times [2024-11-23 23:58:53,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:58:53,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697529224] [2024-11-23 23:58:53,135 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-23 23:58:53,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:58:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:58:55,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3908 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 1792 trivial. 0 not checked. [2024-11-23 23:58:55,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:58:55,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697529224] [2024-11-23 23:58:55,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697529224] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:58:55,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644075371] [2024-11-23 23:58:55,833 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-23 23:58:55,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:58:55,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:58:55,836 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:58:55,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 23:58:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:58:56,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-23 23:58:56,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:58:56,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3908 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 1792 trivial. 0 not checked. [2024-11-23 23:58:56,257 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:58:59,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3908 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 1792 trivial. 0 not checked. [2024-11-23 23:58:59,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644075371] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:58:59,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:58:59,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2024-11-23 23:58:59,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546103151] [2024-11-23 23:58:59,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:58:59,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-23 23:58:59,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:58:59,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-23 23:58:59,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-23 23:58:59,430 INFO L87 Difference]: Start difference. First operand 483 states and 576 transitions. Second operand has 97 states, 97 states have (on average 2.1752577319587627) internal successors, (211), 97 states have internal predecessors, (211), 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) [2024-11-23 23:58:59,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:58:59,874 INFO L93 Difference]: Finished difference Result 967 states and 1200 transitions. [2024-11-23 23:58:59,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-23 23:58:59,875 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.1752577319587627) internal successors, (211), 97 states have internal predecessors, (211), 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) Word has length 240 [2024-11-23 23:58:59,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:58:59,878 INFO L225 Difference]: With dead ends: 967 [2024-11-23 23:58:59,878 INFO L226 Difference]: Without dead ends: 579 [2024-11-23 23:58:59,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-23 23:58:59,882 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:58:59,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 91 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:58:59,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-23 23:58:59,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2024-11-23 23:58:59,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 578 states have (on average 1.1626297577854672) internal successors, (672), 578 states have internal predecessors, (672), 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) [2024-11-23 23:58:59,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 672 transitions. [2024-11-23 23:58:59,921 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 672 transitions. Word has length 240 [2024-11-23 23:58:59,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:58:59,921 INFO L471 AbstractCegarLoop]: Abstraction has 579 states and 672 transitions. [2024-11-23 23:58:59,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.1752577319587627) internal successors, (211), 97 states have internal predecessors, (211), 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) [2024-11-23 23:58:59,922 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 672 transitions. [2024-11-23 23:58:59,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2024-11-23 23:58:59,927 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:58:59,927 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 30, 30, 30, 30, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:58:59,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-23 23:59:00,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:59:00,128 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:59:00,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:59:00,128 INFO L85 PathProgramCache]: Analyzing trace with hash 134514237, now seen corresponding path program 8 times [2024-11-23 23:59:00,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:59:00,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498563998] [2024-11-23 23:59:00,128 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:59:00,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:59:00,263 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:59:00,263 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:59:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 10628 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 1792 trivial. 0 not checked. [2024-11-23 23:59:08,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:59:08,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498563998] [2024-11-23 23:59:08,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498563998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:59:08,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812480342] [2024-11-23 23:59:08,502 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:59:08,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:59:08,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:59:08,504 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:59:08,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 23:59:08,919 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:59:08,919 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:59:08,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-23 23:59:08,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:59:09,255 INFO L134 CoverageAnalysis]: Checked inductivity of 10628 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 1792 trivial. 0 not checked. [2024-11-23 23:59:09,256 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:59:20,651 INFO L134 CoverageAnalysis]: Checked inductivity of 10628 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 1792 trivial. 0 not checked. [2024-11-23 23:59:20,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812480342] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:59:20,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:59:20,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2024-11-23 23:59:20,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597487941] [2024-11-23 23:59:20,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:59:20,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-23 23:59:20,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:59:20,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-23 23:59:20,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-23 23:59:20,665 INFO L87 Difference]: Start difference. First operand 579 states and 672 transitions. Second operand has 193 states, 193 states have (on average 2.088082901554404) internal successors, (403), 193 states have internal predecessors, (403), 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) [2024-11-23 23:59:22,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:59:22,009 INFO L93 Difference]: Finished difference Result 1159 states and 1440 transitions. [2024-11-23 23:59:22,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-23 23:59:22,010 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 2.088082901554404) internal successors, (403), 193 states have internal predecessors, (403), 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) Word has length 336 [2024-11-23 23:59:22,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:59:22,014 INFO L225 Difference]: With dead ends: 1159 [2024-11-23 23:59:22,014 INFO L226 Difference]: Without dead ends: 771 [2024-11-23 23:59:22,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-23 23:59:22,019 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:59:22,020 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 157 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:59:22,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2024-11-23 23:59:22,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 771. [2024-11-23 23:59:22,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 770 states have (on average 1.122077922077922) internal successors, (864), 770 states have internal predecessors, (864), 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) [2024-11-23 23:59:22,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 864 transitions. [2024-11-23 23:59:22,057 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 864 transitions. Word has length 336 [2024-11-23 23:59:22,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:59:22,058 INFO L471 AbstractCegarLoop]: Abstraction has 771 states and 864 transitions. [2024-11-23 23:59:22,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 2.088082901554404) internal successors, (403), 193 states have internal predecessors, (403), 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) [2024-11-23 23:59:22,058 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 864 transitions. [2024-11-23 23:59:22,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2024-11-23 23:59:22,070 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:59:22,070 INFO L218 NwaCegarLoop]: trace histogram [190, 190, 30, 30, 30, 30, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:59:22,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-23 23:59:22,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:59:22,274 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:59:22,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:59:22,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1875554237, now seen corresponding path program 9 times [2024-11-23 23:59:22,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:59:22,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133090261] [2024-11-23 23:59:22,275 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:59:22,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:59:22,528 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-23 23:59:22,528 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:59:23,563 INFO L134 CoverageAnalysis]: Checked inductivity of 37892 backedges. 1 proven. 439 refuted. 0 times theorem prover too weak. 37452 trivial. 0 not checked. [2024-11-23 23:59:23,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:59:23,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133090261] [2024-11-23 23:59:23,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133090261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:59:23,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371046149] [2024-11-23 23:59:23,564 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:59:23,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:59:23,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:59:23,566 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:59:23,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-23 23:59:24,396 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-23 23:59:24,397 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:59:24,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-23 23:59:24,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:59:25,872 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 23:59:25,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2024-11-23 23:59:25,904 INFO L134 CoverageAnalysis]: Checked inductivity of 37892 backedges. 1 proven. 439 refuted. 0 times theorem prover too weak. 37452 trivial. 0 not checked. [2024-11-23 23:59:25,904 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:59:26,894 INFO L349 Elim1Store]: treesize reduction 13, result has 73.5 percent of original size [2024-11-23 23:59:26,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 49 treesize of output 47 [2024-11-23 23:59:26,957 INFO L134 CoverageAnalysis]: Checked inductivity of 37892 backedges. 27 proven. 413 refuted. 0 times theorem prover too weak. 37452 trivial. 0 not checked. [2024-11-23 23:59:26,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371046149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:59:26,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:59:26,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 41 [2024-11-23 23:59:26,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163506298] [2024-11-23 23:59:26,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:59:26,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-23 23:59:26,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:59:26,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-23 23:59:26,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1449, Unknown=0, NotChecked=0, Total=1640 [2024-11-23 23:59:26,960 INFO L87 Difference]: Start difference. First operand 771 states and 864 transitions. Second operand has 41 states, 41 states have (on average 3.024390243902439) internal successors, (124), 41 states have internal predecessors, (124), 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) [2024-11-23 23:59:28,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:59:28,147 INFO L93 Difference]: Finished difference Result 936 states and 1069 transitions. [2024-11-23 23:59:28,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-23 23:59:28,148 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.024390243902439) internal successors, (124), 41 states have internal predecessors, (124), 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) Word has length 528 [2024-11-23 23:59:28,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:59:28,153 INFO L225 Difference]: With dead ends: 936 [2024-11-23 23:59:28,153 INFO L226 Difference]: Without dead ends: 927 [2024-11-23 23:59:28,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 1032 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=281, Invalid=2169, Unknown=0, NotChecked=0, Total=2450 [2024-11-23 23:59:28,154 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 102 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:59:28,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 456 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:59:28,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2024-11-23 23:59:28,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 775. [2024-11-23 23:59:28,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 774 states have (on average 1.1214470284237725) internal successors, (868), 774 states have internal predecessors, (868), 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) [2024-11-23 23:59:28,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 868 transitions. [2024-11-23 23:59:28,196 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 868 transitions. Word has length 528 [2024-11-23 23:59:28,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:59:28,197 INFO L471 AbstractCegarLoop]: Abstraction has 775 states and 868 transitions. [2024-11-23 23:59:28,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.024390243902439) internal successors, (124), 41 states have internal predecessors, (124), 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) [2024-11-23 23:59:28,197 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 868 transitions. [2024-11-23 23:59:28,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2024-11-23 23:59:28,201 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:59:28,201 INFO L218 NwaCegarLoop]: trace histogram [190, 190, 30, 30, 30, 30, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:59:28,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-23 23:59:28,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-23 23:59:28,402 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:59:28,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:59:28,402 INFO L85 PathProgramCache]: Analyzing trace with hash 808501891, now seen corresponding path program 10 times [2024-11-23 23:59:28,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:59:28,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147050530] [2024-11-23 23:59:28,403 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 23:59:28,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:59:28,559 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 23:59:28,559 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:59:32,072 INFO L134 CoverageAnalysis]: Checked inductivity of 37907 backedges. 1 proven. 581 refuted. 0 times theorem prover too weak. 37325 trivial. 0 not checked. [2024-11-23 23:59:32,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:59:32,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147050530] [2024-11-23 23:59:32,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147050530] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:59:32,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841947972] [2024-11-23 23:59:32,073 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 23:59:32,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:59:32,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:59:32,075 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:59:32,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-23 23:59:32,543 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 23:59:32,544 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:59:32,546 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-23 23:59:32,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:59:35,098 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 23:59:35,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 90 treesize of output 22 [2024-11-23 23:59:35,143 INFO L134 CoverageAnalysis]: Checked inductivity of 37907 backedges. 1 proven. 556 refuted. 0 times theorem prover too weak. 37350 trivial. 0 not checked. [2024-11-23 23:59:35,143 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:59:36,746 INFO L349 Elim1Store]: treesize reduction 13, result has 87.6 percent of original size [2024-11-23 23:59:36,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 119 treesize of output 112 [2024-11-23 23:59:37,114 INFO L134 CoverageAnalysis]: Checked inductivity of 37907 backedges. 462 proven. 95 refuted. 0 times theorem prover too weak. 37350 trivial. 0 not checked. [2024-11-23 23:59:37,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841947972] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:59:37,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:59:37,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 24, 24] total 58 [2024-11-23 23:59:37,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751457436] [2024-11-23 23:59:37,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:59:37,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-23 23:59:37,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:59:37,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-23 23:59:37,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=2848, Unknown=0, NotChecked=0, Total=3306 [2024-11-23 23:59:37,117 INFO L87 Difference]: Start difference. First operand 775 states and 868 transitions. Second operand has 58 states, 58 states have (on average 2.3448275862068964) internal successors, (136), 58 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:59:42,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:59:42,092 INFO L93 Difference]: Finished difference Result 1485 states and 1749 transitions. [2024-11-23 23:59:42,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-23 23:59:42,093 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.3448275862068964) internal successors, (136), 58 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 532 [2024-11-23 23:59:42,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:59:42,098 INFO L225 Difference]: With dead ends: 1485 [2024-11-23 23:59:42,098 INFO L226 Difference]: Without dead ends: 1094 [2024-11-23 23:59:42,101 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1134 GetRequests, 1030 SyntacticMatches, 4 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2824 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1576, Invalid=8726, Unknown=0, NotChecked=0, Total=10302 [2024-11-23 23:59:42,101 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 108 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 3425 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 3468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:59:42,102 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 506 Invalid, 3468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3425 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-23 23:59:42,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2024-11-23 23:59:42,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 911. [2024-11-23 23:59:42,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 910 states have (on average 1.1362637362637362) internal successors, (1034), 910 states have internal predecessors, (1034), 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) [2024-11-23 23:59:42,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1034 transitions. [2024-11-23 23:59:42,164 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1034 transitions. Word has length 532 [2024-11-23 23:59:42,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:59:42,165 INFO L471 AbstractCegarLoop]: Abstraction has 911 states and 1034 transitions. [2024-11-23 23:59:42,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.3448275862068964) internal successors, (136), 58 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:59:42,166 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1034 transitions. [2024-11-23 23:59:42,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2024-11-23 23:59:42,170 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:59:42,170 INFO L218 NwaCegarLoop]: trace histogram [190, 190, 30, 30, 30, 30, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:59:42,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-23 23:59:42,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:59:42,371 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:59:42,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:59:42,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1445200457, now seen corresponding path program 11 times [2024-11-23 23:59:42,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:59:42,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735566082] [2024-11-23 23:59:42,372 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 23:59:42,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:59:54,639 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 190 check-sat command(s) [2024-11-23 23:59:54,639 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:59:56,788 INFO L134 CoverageAnalysis]: Checked inductivity of 37926 backedges. 1 proven. 1770 refuted. 0 times theorem prover too weak. 36155 trivial. 0 not checked. [2024-11-23 23:59:56,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:59:56,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735566082] [2024-11-23 23:59:56,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735566082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:59:56,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106356807] [2024-11-23 23:59:56,789 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 23:59:56,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:59:56,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:59:56,791 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:59:56,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84f178f2-744d-4ac2-a9af-5eacd07990db/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process