./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-90.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-90.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c6e745fb3369f6d50167657c14f10731407b128ae2baded15d3743683fdbf24 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:15:34,182 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:15:34,236 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 08:15:34,241 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:15:34,241 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:15:34,262 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:15:34,262 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:15:34,263 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:15:34,263 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:15:34,263 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:15:34,263 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:15:34,263 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:15:34,263 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:15:34,264 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:15:34,264 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:15:34,264 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:15:34,264 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:15:34,264 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:15:34,264 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:15:34,264 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:15:34,264 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:15:34,264 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:15:34,264 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:15:34,264 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:15:34,265 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:15:34,265 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:15:34,265 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:15:34,265 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:15:34,265 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:15:34,265 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:15:34,265 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:15:34,265 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:15:34,265 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:15:34,265 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:15:34,265 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:15:34,265 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:15:34,266 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:15:34,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:15:34,266 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:15:34,266 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:15:34,266 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:15:34,266 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:15:34,266 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:15:34,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:15:34,266 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:15:34,266 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:15:34,266 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:15:34,266 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:15:34,267 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_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c6e745fb3369f6d50167657c14f10731407b128ae2baded15d3743683fdbf24 [2024-12-02 08:15:34,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:15:34,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:15:34,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:15:34,489 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:15:34,490 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:15:34,491 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-90.i [2024-12-02 08:15:37,143 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/data/3f2d75031/3cd6e16fef1b4fb1b53cee496edd6bcb/FLAG4b135743f [2024-12-02 08:15:37,317 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:15:37,318 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-90.i [2024-12-02 08:15:37,326 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/data/3f2d75031/3cd6e16fef1b4fb1b53cee496edd6bcb/FLAG4b135743f [2024-12-02 08:15:37,338 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/data/3f2d75031/3cd6e16fef1b4fb1b53cee496edd6bcb [2024-12-02 08:15:37,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:15:37,342 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:15:37,343 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:15:37,343 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:15:37,347 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:15:37,348 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:15:37" (1/1) ... [2024-12-02 08:15:37,348 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c5cc44e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:15:37, skipping insertion in model container [2024-12-02 08:15:37,349 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:15:37" (1/1) ... [2024-12-02 08:15:37,365 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:15:37,491 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_77e071ca-c052-483d-8d9c-3d9b353e593d/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-90.i[916,929] [2024-12-02 08:15:37,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:15:37,546 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:15:37,556 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_77e071ca-c052-483d-8d9c-3d9b353e593d/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-90.i[916,929] [2024-12-02 08:15:37,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:15:37,600 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:15:37,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:15:37 WrapperNode [2024-12-02 08:15:37,600 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:15:37,601 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:15:37,601 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:15:37,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:15:37,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:15:37" (1/1) ... [2024-12-02 08:15:37,618 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:15:37" (1/1) ... [2024-12-02 08:15:37,646 INFO L138 Inliner]: procedures = 26, calls = 176, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 505 [2024-12-02 08:15:37,647 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:15:37,647 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:15:37,647 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:15:37,648 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:15:37,657 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:15:37" (1/1) ... [2024-12-02 08:15:37,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:15:37" (1/1) ... [2024-12-02 08:15:37,661 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:15:37" (1/1) ... [2024-12-02 08:15:37,681 INFO L175 MemorySlicer]: Split 130 memory accesses to 16 slices as follows [2, 3, 6, 16, 8, 12, 13, 8, 14, 8, 6, 8, 6, 4, 12, 4]. 12 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 19 writes are split as follows [0, 1, 1, 1, 1, 1, 4, 1, 1, 2, 1, 1, 1, 1, 1, 1]. [2024-12-02 08:15:37,681 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:15:37" (1/1) ... [2024-12-02 08:15:37,682 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:15:37" (1/1) ... [2024-12-02 08:15:37,694 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:15:37" (1/1) ... [2024-12-02 08:15:37,695 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:15:37" (1/1) ... [2024-12-02 08:15:37,700 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:15:37" (1/1) ... [2024-12-02 08:15:37,703 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:15:37" (1/1) ... [2024-12-02 08:15:37,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:15:37" (1/1) ... [2024-12-02 08:15:37,709 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:15:37,710 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:15:37,710 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:15:37,710 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:15:37,711 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:15:37" (1/1) ... [2024-12-02 08:15:37,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:15:37,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:15:37,734 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:15:37,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:15:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:15:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 08:15:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 08:15:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 08:15:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 08:15:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 08:15:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 08:15:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-12-02 08:15:37,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-12-02 08:15:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-12-02 08:15:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-12-02 08:15:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-12-02 08:15:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-12-02 08:15:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-12-02 08:15:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-12-02 08:15:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-12-02 08:15:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2024-12-02 08:15:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 08:15:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 08:15:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 08:15:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 08:15:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 08:15:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 08:15:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-12-02 08:15:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-12-02 08:15:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-12-02 08:15:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-12-02 08:15:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-12-02 08:15:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-12-02 08:15:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-12-02 08:15:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-12-02 08:15:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-12-02 08:15:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-12-02 08:15:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 08:15:37,755 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 08:15:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:15:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 08:15:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 08:15:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 08:15:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 08:15:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 08:15:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 08:15:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 08:15:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 08:15:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 08:15:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 08:15:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 08:15:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 08:15:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-02 08:15:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-02 08:15:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-02 08:15:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:15:37,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:15:37,900 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:15:37,902 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:15:38,322 INFO L? ?]: Removed 112 outVars from TransFormulas that were not future-live. [2024-12-02 08:15:38,322 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:15:38,331 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:15:38,331 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 08:15:38,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:15:38 BoogieIcfgContainer [2024-12-02 08:15:38,332 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:15:38,334 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:15:38,334 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:15:38,337 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:15:38,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:15:37" (1/3) ... [2024-12-02 08:15:38,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffd7fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:15:38, skipping insertion in model container [2024-12-02 08:15:38,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:15:37" (2/3) ... [2024-12-02 08:15:38,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ffd7fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:15:38, skipping insertion in model container [2024-12-02 08:15:38,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:15:38" (3/3) ... [2024-12-02 08:15:38,339 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-90.i [2024-12-02 08:15:38,349 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:15:38,351 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-p_file-90.i that has 2 procedures, 111 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 08:15:38,396 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:15:38,405 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;@190299e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:15:38,405 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 08:15:38,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 88 states have (on average 1.375) internal successors, (121), 89 states have internal predecessors, (121), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 08:15:38,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 08:15:38,418 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:38,419 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:38,419 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:38,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:38,423 INFO L85 PathProgramCache]: Analyzing trace with hash -803015530, now seen corresponding path program 1 times [2024-12-02 08:15:38,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:38,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596894936] [2024-12-02 08:15:38,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:38,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:38,687 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-12-02 08:15:38,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:38,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596894936] [2024-12-02 08:15:38,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596894936] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:15:38,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687069942] [2024-12-02 08:15:38,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:38,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:15:38,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:15:38,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:15:38,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 08:15:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:38,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 08:15:38,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:15:38,960 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-12-02 08:15:38,960 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:15:38,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687069942] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:38,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:15:38,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 08:15:38,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196221113] [2024-12-02 08:15:38,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:38,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:15:38,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:38,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:15:38,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:15:38,982 INFO L87 Difference]: Start difference. First operand has 111 states, 88 states have (on average 1.375) internal successors, (121), 89 states have internal predecessors, (121), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 08:15:39,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:15:39,028 INFO L93 Difference]: Finished difference Result 215 states and 336 transitions. [2024-12-02 08:15:39,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:15:39,029 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 153 [2024-12-02 08:15:39,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:15:39,036 INFO L225 Difference]: With dead ends: 215 [2024-12-02 08:15:39,036 INFO L226 Difference]: Without dead ends: 107 [2024-12-02 08:15:39,039 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:15:39,042 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:15:39,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:15:39,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-12-02 08:15:39,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2024-12-02 08:15:39,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 85 states have (on average 1.3411764705882352) internal successors, (114), 85 states have internal predecessors, (114), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 08:15:39,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 154 transitions. [2024-12-02 08:15:39,083 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 154 transitions. Word has length 153 [2024-12-02 08:15:39,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:15:39,083 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 154 transitions. [2024-12-02 08:15:39,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 08:15:39,084 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 154 transitions. [2024-12-02 08:15:39,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 08:15:39,087 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:39,087 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:39,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 08:15:39,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:15:39,288 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:39,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:39,288 INFO L85 PathProgramCache]: Analyzing trace with hash 82058350, now seen corresponding path program 1 times [2024-12-02 08:15:39,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:39,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014779548] [2024-12-02 08:15:39,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:39,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:39,685 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-12-02 08:15:39,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:39,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014779548] [2024-12-02 08:15:39,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014779548] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:15:39,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689719156] [2024-12-02 08:15:39,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:39,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:15:39,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:15:39,689 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:15:39,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 08:15:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:39,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 08:15:39,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:15:39,986 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:15:39,986 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:15:39,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689719156] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:39,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:15:39,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2024-12-02 08:15:39,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979362607] [2024-12-02 08:15:39,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:39,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:15:39,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:39,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:15:39,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:15:39,989 INFO L87 Difference]: Start difference. First operand 107 states and 154 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:40,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:15:40,035 INFO L93 Difference]: Finished difference Result 213 states and 308 transitions. [2024-12-02 08:15:40,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:15:40,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 153 [2024-12-02 08:15:40,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:15:40,038 INFO L225 Difference]: With dead ends: 213 [2024-12-02 08:15:40,038 INFO L226 Difference]: Without dead ends: 109 [2024-12-02 08:15:40,039 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:15:40,040 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 0 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:15:40,040 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 445 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:15:40,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-12-02 08:15:40,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-12-02 08:15:40,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 87 states have (on average 1.3333333333333333) internal successors, (116), 87 states have internal predecessors, (116), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 08:15:40,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 156 transitions. [2024-12-02 08:15:40,053 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 156 transitions. Word has length 153 [2024-12-02 08:15:40,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:15:40,055 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 156 transitions. [2024-12-02 08:15:40,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:40,055 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 156 transitions. [2024-12-02 08:15:40,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 08:15:40,058 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:40,058 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:40,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 08:15:40,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:15:40,259 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:40,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:40,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1318528233, now seen corresponding path program 1 times [2024-12-02 08:15:40,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:40,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527950040] [2024-12-02 08:15:40,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:40,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:40,678 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:15:40,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:40,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527950040] [2024-12-02 08:15:40,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527950040] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:40,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:15:40,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:15:40,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946999898] [2024-12-02 08:15:40,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:40,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:15:40,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:40,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:15:40,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:15:40,681 INFO L87 Difference]: Start difference. First operand 109 states and 156 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:40,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:15:40,782 INFO L93 Difference]: Finished difference Result 323 states and 464 transitions. [2024-12-02 08:15:40,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:15:40,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 155 [2024-12-02 08:15:40,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:15:40,785 INFO L225 Difference]: With dead ends: 323 [2024-12-02 08:15:40,785 INFO L226 Difference]: Without dead ends: 217 [2024-12-02 08:15:40,786 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:15:40,787 INFO L435 NwaCegarLoop]: 287 mSDtfsCounter, 146 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:15:40,787 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 994 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:15:40,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-12-02 08:15:40,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 114. [2024-12-02 08:15:40,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 92 states have (on average 1.326086956521739) internal successors, (122), 92 states have internal predecessors, (122), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 08:15:40,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 162 transitions. [2024-12-02 08:15:40,800 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 162 transitions. Word has length 155 [2024-12-02 08:15:40,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:15:40,801 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 162 transitions. [2024-12-02 08:15:40,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:40,801 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 162 transitions. [2024-12-02 08:15:40,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 08:15:40,803 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:40,804 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:40,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 08:15:40,804 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:40,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:40,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1537382951, now seen corresponding path program 1 times [2024-12-02 08:15:40,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:40,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635833195] [2024-12-02 08:15:40,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:40,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:15:41,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:41,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635833195] [2024-12-02 08:15:41,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635833195] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:41,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:15:41,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:15:41,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785598965] [2024-12-02 08:15:41,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:41,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:15:41,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:41,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:15:41,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:15:41,327 INFO L87 Difference]: Start difference. First operand 114 states and 162 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:41,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:15:41,600 INFO L93 Difference]: Finished difference Result 322 states and 460 transitions. [2024-12-02 08:15:41,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:15:41,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 155 [2024-12-02 08:15:41,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:15:41,603 INFO L225 Difference]: With dead ends: 322 [2024-12-02 08:15:41,603 INFO L226 Difference]: Without dead ends: 211 [2024-12-02 08:15:41,604 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:15:41,605 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 380 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:15:41,605 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 489 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 08:15:41,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-12-02 08:15:41,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 116. [2024-12-02 08:15:41,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 94 states have (on average 1.3191489361702127) internal successors, (124), 94 states have internal predecessors, (124), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 08:15:41,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 164 transitions. [2024-12-02 08:15:41,619 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 164 transitions. Word has length 155 [2024-12-02 08:15:41,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:15:41,620 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 164 transitions. [2024-12-02 08:15:41,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:41,620 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 164 transitions. [2024-12-02 08:15:41,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 08:15:41,622 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:41,622 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:41,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 08:15:41,622 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:41,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:41,623 INFO L85 PathProgramCache]: Analyzing trace with hash -963382957, now seen corresponding path program 1 times [2024-12-02 08:15:41,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:41,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104454669] [2024-12-02 08:15:41,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:41,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:42,370 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:15:42,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:42,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104454669] [2024-12-02 08:15:42,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104454669] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:42,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:15:42,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 08:15:42,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018041127] [2024-12-02 08:15:42,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:42,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 08:15:42,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:42,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 08:15:42,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 08:15:42,373 INFO L87 Difference]: Start difference. First operand 116 states and 164 transitions. Second operand has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 10 states have internal predecessors, (59), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2024-12-02 08:15:42,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:15:42,702 INFO L93 Difference]: Finished difference Result 236 states and 332 transitions. [2024-12-02 08:15:42,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 08:15:42,703 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 10 states have internal predecessors, (59), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 156 [2024-12-02 08:15:42,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:15:42,704 INFO L225 Difference]: With dead ends: 236 [2024-12-02 08:15:42,704 INFO L226 Difference]: Without dead ends: 123 [2024-12-02 08:15:42,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-12-02 08:15:42,705 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 310 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:15:42,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 702 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 08:15:42,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-12-02 08:15:42,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-12-02 08:15:42,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 100 states have (on average 1.3) internal successors, (130), 100 states have internal predecessors, (130), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 08:15:42,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 170 transitions. [2024-12-02 08:15:42,722 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 170 transitions. Word has length 156 [2024-12-02 08:15:42,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:15:42,723 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 170 transitions. [2024-12-02 08:15:42,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 10 states have internal predecessors, (59), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2024-12-02 08:15:42,723 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 170 transitions. [2024-12-02 08:15:42,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-12-02 08:15:42,725 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:42,725 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:42,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 08:15:42,725 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:42,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:42,726 INFO L85 PathProgramCache]: Analyzing trace with hash -842790620, now seen corresponding path program 1 times [2024-12-02 08:15:42,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:42,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627470969] [2024-12-02 08:15:42,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:42,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:43,353 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 48 proven. 9 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-12-02 08:15:43,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:43,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627470969] [2024-12-02 08:15:43,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627470969] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:15:43,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932570455] [2024-12-02 08:15:43,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:43,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:15:43,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:15:43,356 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:15:43,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 08:15:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:43,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-12-02 08:15:43,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:15:43,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 08:15:44,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 59 [2024-12-02 08:15:44,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-12-02 08:15:44,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2024-12-02 08:15:44,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2024-12-02 08:15:44,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 39 [2024-12-02 08:15:44,530 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2024-12-02 08:15:44,530 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:15:44,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2024-12-02 08:15:44,771 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:15:44,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 49 [2024-12-02 08:15:44,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 54 [2024-12-02 08:15:44,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-12-02 08:15:44,946 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:15:44,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932570455] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 08:15:44,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:15:44,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 15] total 27 [2024-12-02 08:15:44,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120943592] [2024-12-02 08:15:44,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:44,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:15:44,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:44,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:15:44,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2024-12-02 08:15:44,948 INFO L87 Difference]: Start difference. First operand 123 states and 170 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:45,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:15:45,301 INFO L93 Difference]: Finished difference Result 299 states and 411 transitions. [2024-12-02 08:15:45,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 08:15:45,302 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2024-12-02 08:15:45,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:15:45,303 INFO L225 Difference]: With dead ends: 299 [2024-12-02 08:15:45,303 INFO L226 Difference]: Without dead ends: 179 [2024-12-02 08:15:45,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 295 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2024-12-02 08:15:45,305 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 67 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:15:45,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 1150 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:15:45,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-12-02 08:15:45,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 174. [2024-12-02 08:15:45,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 148 states have (on average 1.3175675675675675) internal successors, (195), 149 states have internal predecessors, (195), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-12-02 08:15:45,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 239 transitions. [2024-12-02 08:15:45,319 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 239 transitions. Word has length 157 [2024-12-02 08:15:45,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:15:45,319 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 239 transitions. [2024-12-02 08:15:45,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:45,319 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 239 transitions. [2024-12-02 08:15:45,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-12-02 08:15:45,321 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:45,321 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:45,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 08:15:45,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:15:45,522 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:45,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:45,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1853907870, now seen corresponding path program 1 times [2024-12-02 08:15:45,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:45,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130921567] [2024-12-02 08:15:45,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:45,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:45,933 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:15:45,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:45,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130921567] [2024-12-02 08:15:45,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130921567] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:45,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:15:45,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:15:45,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199106641] [2024-12-02 08:15:45,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:45,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:15:45,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:45,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:15:45,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:15:45,935 INFO L87 Difference]: Start difference. First operand 174 states and 239 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:46,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:15:46,059 INFO L93 Difference]: Finished difference Result 354 states and 483 transitions. [2024-12-02 08:15:46,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:15:46,060 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2024-12-02 08:15:46,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:15:46,063 INFO L225 Difference]: With dead ends: 354 [2024-12-02 08:15:46,063 INFO L226 Difference]: Without dead ends: 183 [2024-12-02 08:15:46,063 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:15:46,064 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 62 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:15:46,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 838 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:15:46,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-12-02 08:15:46,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2024-12-02 08:15:46,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 145 states have (on average 1.3103448275862069) internal successors, (190), 146 states have internal predecessors, (190), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-12-02 08:15:46,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 234 transitions. [2024-12-02 08:15:46,078 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 234 transitions. Word has length 157 [2024-12-02 08:15:46,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:15:46,078 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 234 transitions. [2024-12-02 08:15:46,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:46,078 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 234 transitions. [2024-12-02 08:15:46,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-12-02 08:15:46,080 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:46,080 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:46,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 08:15:46,080 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:46,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:46,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1458031970, now seen corresponding path program 1 times [2024-12-02 08:15:46,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:46,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317584505] [2024-12-02 08:15:46,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:46,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:46,464 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:15:46,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:46,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317584505] [2024-12-02 08:15:46,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317584505] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:46,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:15:46,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:15:46,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049933825] [2024-12-02 08:15:46,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:46,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:15:46,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:46,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:15:46,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:15:46,466 INFO L87 Difference]: Start difference. First operand 171 states and 234 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:46,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:15:46,585 INFO L93 Difference]: Finished difference Result 385 states and 525 transitions. [2024-12-02 08:15:46,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:15:46,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2024-12-02 08:15:46,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:15:46,588 INFO L225 Difference]: With dead ends: 385 [2024-12-02 08:15:46,588 INFO L226 Difference]: Without dead ends: 217 [2024-12-02 08:15:46,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:15:46,589 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 61 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:15:46,589 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 807 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:15:46,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-12-02 08:15:46,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 171. [2024-12-02 08:15:46,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 145 states have (on average 1.303448275862069) internal successors, (189), 146 states have internal predecessors, (189), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-12-02 08:15:46,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 233 transitions. [2024-12-02 08:15:46,604 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 233 transitions. Word has length 157 [2024-12-02 08:15:46,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:15:46,604 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 233 transitions. [2024-12-02 08:15:46,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:46,604 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 233 transitions. [2024-12-02 08:15:46,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-12-02 08:15:46,606 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:46,606 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:46,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 08:15:46,606 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:46,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:46,607 INFO L85 PathProgramCache]: Analyzing trace with hash 446914720, now seen corresponding path program 1 times [2024-12-02 08:15:46,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:46,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978885971] [2024-12-02 08:15:46,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:46,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:47,073 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 48 proven. 9 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-12-02 08:15:47,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:47,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978885971] [2024-12-02 08:15:47,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978885971] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:15:47,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144810453] [2024-12-02 08:15:47,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:47,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:15:47,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:15:47,076 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:15:47,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 08:15:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:47,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-12-02 08:15:47,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:15:47,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-12-02 08:15:47,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 51 [2024-12-02 08:15:47,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-12-02 08:15:47,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2024-12-02 08:15:47,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2024-12-02 08:15:47,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2024-12-02 08:15:47,781 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-12-02 08:15:47,781 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:15:47,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2024-12-02 08:15:47,909 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:15:47,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 49 [2024-12-02 08:15:47,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2024-12-02 08:15:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:15:48,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144810453] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 08:15:48,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:15:48,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 12] total 21 [2024-12-02 08:15:48,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133156556] [2024-12-02 08:15:48,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:48,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:15:48,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:48,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:15:48,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2024-12-02 08:15:48,062 INFO L87 Difference]: Start difference. First operand 171 states and 233 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:48,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:15:48,381 INFO L93 Difference]: Finished difference Result 399 states and 540 transitions. [2024-12-02 08:15:48,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 08:15:48,382 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2024-12-02 08:15:48,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:15:48,383 INFO L225 Difference]: With dead ends: 399 [2024-12-02 08:15:48,384 INFO L226 Difference]: Without dead ends: 231 [2024-12-02 08:15:48,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 301 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2024-12-02 08:15:48,385 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 73 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:15:48,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 1361 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:15:48,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-12-02 08:15:48,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 224. [2024-12-02 08:15:48,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 190 states have (on average 1.3) internal successors, (247), 192 states have internal predecessors, (247), 28 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (28), 26 states have call predecessors, (28), 28 states have call successors, (28) [2024-12-02 08:15:48,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 303 transitions. [2024-12-02 08:15:48,411 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 303 transitions. Word has length 157 [2024-12-02 08:15:48,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:15:48,411 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 303 transitions. [2024-12-02 08:15:48,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:48,412 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 303 transitions. [2024-12-02 08:15:48,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-12-02 08:15:48,413 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:48,414 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:48,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 08:15:48,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:15:48,614 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:48,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:48,615 INFO L85 PathProgramCache]: Analyzing trace with hash 252308769, now seen corresponding path program 1 times [2024-12-02 08:15:48,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:48,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914944183] [2024-12-02 08:15:48,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:48,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:48,773 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:15:48,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:48,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914944183] [2024-12-02 08:15:48,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914944183] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:48,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:15:48,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:15:48,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956702199] [2024-12-02 08:15:48,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:48,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:15:48,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:48,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:15:48,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:15:48,775 INFO L87 Difference]: Start difference. First operand 224 states and 303 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:48,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:15:48,870 INFO L93 Difference]: Finished difference Result 588 states and 802 transitions. [2024-12-02 08:15:48,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:15:48,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2024-12-02 08:15:48,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:15:48,872 INFO L225 Difference]: With dead ends: 588 [2024-12-02 08:15:48,872 INFO L226 Difference]: Without dead ends: 367 [2024-12-02 08:15:48,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:15:48,873 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 62 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:15:48,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 668 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:15:48,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-12-02 08:15:48,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 269. [2024-12-02 08:15:48,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 235 states have (on average 1.3063829787234043) internal successors, (307), 237 states have internal predecessors, (307), 28 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (28), 26 states have call predecessors, (28), 28 states have call successors, (28) [2024-12-02 08:15:48,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 363 transitions. [2024-12-02 08:15:48,890 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 363 transitions. Word has length 158 [2024-12-02 08:15:48,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:15:48,891 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 363 transitions. [2024-12-02 08:15:48,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:48,891 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 363 transitions. [2024-12-02 08:15:48,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-12-02 08:15:48,893 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:48,893 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:48,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 08:15:48,893 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:48,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:48,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1027554909, now seen corresponding path program 1 times [2024-12-02 08:15:48,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:48,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111410650] [2024-12-02 08:15:48,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:48,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:49,028 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:15:49,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:49,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111410650] [2024-12-02 08:15:49,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111410650] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:49,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:15:49,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:15:49,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59033957] [2024-12-02 08:15:49,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:49,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:15:49,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:49,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:15:49,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:15:49,030 INFO L87 Difference]: Start difference. First operand 269 states and 363 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:49,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:15:49,133 INFO L93 Difference]: Finished difference Result 701 states and 946 transitions. [2024-12-02 08:15:49,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:15:49,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2024-12-02 08:15:49,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:15:49,136 INFO L225 Difference]: With dead ends: 701 [2024-12-02 08:15:49,136 INFO L226 Difference]: Without dead ends: 435 [2024-12-02 08:15:49,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:15:49,137 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 78 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:15:49,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 611 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:15:49,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2024-12-02 08:15:49,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 304. [2024-12-02 08:15:49,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 270 states have (on average 1.3037037037037038) internal successors, (352), 272 states have internal predecessors, (352), 28 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (28), 26 states have call predecessors, (28), 28 states have call successors, (28) [2024-12-02 08:15:49,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 408 transitions. [2024-12-02 08:15:49,156 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 408 transitions. Word has length 158 [2024-12-02 08:15:49,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:15:49,157 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 408 transitions. [2024-12-02 08:15:49,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:49,157 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 408 transitions. [2024-12-02 08:15:49,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-12-02 08:15:49,158 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:49,159 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:49,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 08:15:49,159 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:49,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:49,159 INFO L85 PathProgramCache]: Analyzing trace with hash 527068383, now seen corresponding path program 1 times [2024-12-02 08:15:49,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:49,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772633437] [2024-12-02 08:15:49,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:49,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:49,296 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:15:49,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:49,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772633437] [2024-12-02 08:15:49,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772633437] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:49,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:15:49,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:15:49,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95451634] [2024-12-02 08:15:49,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:49,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:15:49,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:49,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:15:49,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:15:49,297 INFO L87 Difference]: Start difference. First operand 304 states and 408 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:49,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:15:49,403 INFO L93 Difference]: Finished difference Result 693 states and 927 transitions. [2024-12-02 08:15:49,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:15:49,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2024-12-02 08:15:49,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:15:49,405 INFO L225 Difference]: With dead ends: 693 [2024-12-02 08:15:49,406 INFO L226 Difference]: Without dead ends: 392 [2024-12-02 08:15:49,406 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:15:49,407 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 76 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:15:49,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 702 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:15:49,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-12-02 08:15:49,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 265. [2024-12-02 08:15:49,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 233 states have (on average 1.2832618025751072) internal successors, (299), 234 states have internal predecessors, (299), 26 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-12-02 08:15:49,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 351 transitions. [2024-12-02 08:15:49,425 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 351 transitions. Word has length 158 [2024-12-02 08:15:49,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:15:49,425 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 351 transitions. [2024-12-02 08:15:49,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:49,426 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 351 transitions. [2024-12-02 08:15:49,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-12-02 08:15:49,428 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:49,428 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:49,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 08:15:49,428 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:49,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:49,428 INFO L85 PathProgramCache]: Analyzing trace with hash -752795295, now seen corresponding path program 1 times [2024-12-02 08:15:49,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:49,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131333940] [2024-12-02 08:15:49,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:49,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:49,530 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:15:49,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:49,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131333940] [2024-12-02 08:15:49,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131333940] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:49,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:15:49,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:15:49,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543912558] [2024-12-02 08:15:49,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:49,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:15:49,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:49,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:15:49,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:15:49,532 INFO L87 Difference]: Start difference. First operand 265 states and 351 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:49,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:15:49,626 INFO L93 Difference]: Finished difference Result 616 states and 818 transitions. [2024-12-02 08:15:49,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:15:49,626 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2024-12-02 08:15:49,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:15:49,629 INFO L225 Difference]: With dead ends: 616 [2024-12-02 08:15:49,629 INFO L226 Difference]: Without dead ends: 354 [2024-12-02 08:15:49,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:15:49,630 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 52 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:15:49,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 942 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:15:49,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-12-02 08:15:49,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 302. [2024-12-02 08:15:49,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 270 states have (on average 1.2851851851851852) internal successors, (347), 271 states have internal predecessors, (347), 26 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-12-02 08:15:49,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 399 transitions. [2024-12-02 08:15:49,645 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 399 transitions. Word has length 158 [2024-12-02 08:15:49,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:15:49,645 INFO L471 AbstractCegarLoop]: Abstraction has 302 states and 399 transitions. [2024-12-02 08:15:49,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:49,645 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 399 transitions. [2024-12-02 08:15:49,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-12-02 08:15:49,647 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:49,647 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:49,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 08:15:49,647 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:49,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:49,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1008765421, now seen corresponding path program 1 times [2024-12-02 08:15:49,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:49,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677800222] [2024-12-02 08:15:49,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:49,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:50,175 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:15:50,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:50,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677800222] [2024-12-02 08:15:50,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677800222] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:50,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:15:50,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 08:15:50,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48448940] [2024-12-02 08:15:50,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:50,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 08:15:50,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:50,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 08:15:50,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-02 08:15:50,177 INFO L87 Difference]: Start difference. First operand 302 states and 399 transitions. Second operand has 11 states, 10 states have (on average 6.2) internal successors, (62), 11 states have internal predecessors, (62), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2024-12-02 08:15:50,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:15:50,463 INFO L93 Difference]: Finished difference Result 609 states and 805 transitions. [2024-12-02 08:15:50,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 08:15:50,464 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.2) internal successors, (62), 11 states have internal predecessors, (62), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 159 [2024-12-02 08:15:50,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:15:50,466 INFO L225 Difference]: With dead ends: 609 [2024-12-02 08:15:50,466 INFO L226 Difference]: Without dead ends: 310 [2024-12-02 08:15:50,466 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-12-02 08:15:50,467 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 204 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:15:50,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 819 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 08:15:50,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-12-02 08:15:50,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 304. [2024-12-02 08:15:50,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 272 states have (on average 1.2830882352941178) internal successors, (349), 273 states have internal predecessors, (349), 26 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-12-02 08:15:50,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 401 transitions. [2024-12-02 08:15:50,487 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 401 transitions. Word has length 159 [2024-12-02 08:15:50,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:15:50,488 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 401 transitions. [2024-12-02 08:15:50,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.2) internal successors, (62), 11 states have internal predecessors, (62), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2024-12-02 08:15:50,488 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 401 transitions. [2024-12-02 08:15:50,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 08:15:50,490 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:50,490 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:50,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 08:15:50,490 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:50,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:50,491 INFO L85 PathProgramCache]: Analyzing trace with hash -502737119, now seen corresponding path program 1 times [2024-12-02 08:15:50,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:50,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605632595] [2024-12-02 08:15:50,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:50,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:50,775 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:15:50,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:50,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605632595] [2024-12-02 08:15:50,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605632595] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:50,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:15:50,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:15:50,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630447538] [2024-12-02 08:15:50,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:50,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:15:50,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:50,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:15:50,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:15:50,777 INFO L87 Difference]: Start difference. First operand 304 states and 401 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:50,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:15:50,902 INFO L93 Difference]: Finished difference Result 832 states and 1088 transitions. [2024-12-02 08:15:50,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:15:50,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 160 [2024-12-02 08:15:50,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:15:50,906 INFO L225 Difference]: With dead ends: 832 [2024-12-02 08:15:50,906 INFO L226 Difference]: Without dead ends: 531 [2024-12-02 08:15:50,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:15:50,907 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 171 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:15:50,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 456 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:15:50,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2024-12-02 08:15:50,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 528. [2024-12-02 08:15:50,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 469 states have (on average 1.2579957356076759) internal successors, (590), 472 states have internal predecessors, (590), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 45 states have call predecessors, (48), 48 states have call successors, (48) [2024-12-02 08:15:50,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 686 transitions. [2024-12-02 08:15:50,949 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 686 transitions. Word has length 160 [2024-12-02 08:15:50,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:15:50,950 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 686 transitions. [2024-12-02 08:15:50,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:50,950 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 686 transitions. [2024-12-02 08:15:50,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 08:15:50,952 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:50,952 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:50,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 08:15:50,953 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:50,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:50,953 INFO L85 PathProgramCache]: Analyzing trace with hash 198327459, now seen corresponding path program 1 times [2024-12-02 08:15:50,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:50,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311790451] [2024-12-02 08:15:50,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:50,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:51,808 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:15:51,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:51,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311790451] [2024-12-02 08:15:51,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311790451] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:51,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:15:51,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 08:15:51,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274047418] [2024-12-02 08:15:51,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:51,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 08:15:51,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:51,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 08:15:51,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-12-02 08:15:51,811 INFO L87 Difference]: Start difference. First operand 528 states and 686 transitions. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:52,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:15:52,283 INFO L93 Difference]: Finished difference Result 1348 states and 1738 transitions. [2024-12-02 08:15:52,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 08:15:52,283 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 160 [2024-12-02 08:15:52,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:15:52,286 INFO L225 Difference]: With dead ends: 1348 [2024-12-02 08:15:52,287 INFO L226 Difference]: Without dead ends: 823 [2024-12-02 08:15:52,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-12-02 08:15:52,288 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 254 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:15:52,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 1243 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 08:15:52,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2024-12-02 08:15:52,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 759. [2024-12-02 08:15:52,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 674 states have (on average 1.2433234421364985) internal successors, (838), 679 states have internal predecessors, (838), 68 states have call successors, (68), 16 states have call predecessors, (68), 16 states have return successors, (68), 63 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 08:15:52,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 974 transitions. [2024-12-02 08:15:52,342 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 974 transitions. Word has length 160 [2024-12-02 08:15:52,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:15:52,343 INFO L471 AbstractCegarLoop]: Abstraction has 759 states and 974 transitions. [2024-12-02 08:15:52,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:52,343 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 974 transitions. [2024-12-02 08:15:52,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 08:15:52,345 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:52,345 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:52,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 08:15:52,346 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:52,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:52,346 INFO L85 PathProgramCache]: Analyzing trace with hash -903166998, now seen corresponding path program 1 times [2024-12-02 08:15:52,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:52,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207036228] [2024-12-02 08:15:52,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:52,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:52,498 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:15:52,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:52,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207036228] [2024-12-02 08:15:52,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207036228] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:52,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:15:52,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:15:52,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991783044] [2024-12-02 08:15:52,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:52,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:15:52,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:52,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:15:52,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:15:52,499 INFO L87 Difference]: Start difference. First operand 759 states and 974 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:52,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:15:52,599 INFO L93 Difference]: Finished difference Result 1511 states and 1936 transitions. [2024-12-02 08:15:52,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:15:52,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 160 [2024-12-02 08:15:52,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:15:52,603 INFO L225 Difference]: With dead ends: 1511 [2024-12-02 08:15:52,603 INFO L226 Difference]: Without dead ends: 755 [2024-12-02 08:15:52,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:15:52,605 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 47 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:15:52,605 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 632 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:15:52,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2024-12-02 08:15:52,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 751. [2024-12-02 08:15:52,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 666 states have (on average 1.2327327327327327) internal successors, (821), 671 states have internal predecessors, (821), 68 states have call successors, (68), 16 states have call predecessors, (68), 16 states have return successors, (68), 63 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 08:15:52,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 957 transitions. [2024-12-02 08:15:52,666 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 957 transitions. Word has length 160 [2024-12-02 08:15:52,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:15:52,666 INFO L471 AbstractCegarLoop]: Abstraction has 751 states and 957 transitions. [2024-12-02 08:15:52,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:52,666 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 957 transitions. [2024-12-02 08:15:52,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 08:15:52,669 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:52,669 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:52,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 08:15:52,669 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:52,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:52,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1446121962, now seen corresponding path program 1 times [2024-12-02 08:15:52,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:52,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030876928] [2024-12-02 08:15:52,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:52,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:52,869 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:15:52,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:52,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030876928] [2024-12-02 08:15:52,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030876928] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:52,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:15:52,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:15:52,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914515863] [2024-12-02 08:15:52,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:52,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:15:52,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:52,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:15:52,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:15:52,871 INFO L87 Difference]: Start difference. First operand 751 states and 957 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:52,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:15:52,963 INFO L93 Difference]: Finished difference Result 1499 states and 1908 transitions. [2024-12-02 08:15:52,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:15:52,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 160 [2024-12-02 08:15:52,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:15:52,968 INFO L225 Difference]: With dead ends: 1499 [2024-12-02 08:15:52,968 INFO L226 Difference]: Without dead ends: 751 [2024-12-02 08:15:52,969 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:15:52,970 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 49 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:15:52,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 679 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:15:52,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2024-12-02 08:15:53,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 747. [2024-12-02 08:15:53,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 662 states have (on average 1.2280966767371602) internal successors, (813), 667 states have internal predecessors, (813), 68 states have call successors, (68), 16 states have call predecessors, (68), 16 states have return successors, (68), 63 states have call predecessors, (68), 68 states have call successors, (68) [2024-12-02 08:15:53,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 949 transitions. [2024-12-02 08:15:53,029 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 949 transitions. Word has length 160 [2024-12-02 08:15:53,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:15:53,030 INFO L471 AbstractCegarLoop]: Abstraction has 747 states and 949 transitions. [2024-12-02 08:15:53,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:53,030 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 949 transitions. [2024-12-02 08:15:53,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 08:15:53,032 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:53,032 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:53,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 08:15:53,033 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:53,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:53,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1045692083, now seen corresponding path program 1 times [2024-12-02 08:15:53,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:53,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717939798] [2024-12-02 08:15:53,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:53,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:53,221 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:15:53,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:53,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717939798] [2024-12-02 08:15:53,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717939798] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:53,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:15:53,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:15:53,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682322315] [2024-12-02 08:15:53,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:53,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:15:53,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:53,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:15:53,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:15:53,223 INFO L87 Difference]: Start difference. First operand 747 states and 949 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:53,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:15:53,301 INFO L93 Difference]: Finished difference Result 1710 states and 2168 transitions. [2024-12-02 08:15:53,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:15:53,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 160 [2024-12-02 08:15:53,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:15:53,304 INFO L225 Difference]: With dead ends: 1710 [2024-12-02 08:15:53,304 INFO L226 Difference]: Without dead ends: 966 [2024-12-02 08:15:53,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:15:53,306 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 84 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:15:53,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 734 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:15:53,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2024-12-02 08:15:53,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 963. [2024-12-02 08:15:53,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 855 states have (on average 1.223391812865497) internal successors, (1046), 862 states have internal predecessors, (1046), 86 states have call successors, (86), 21 states have call predecessors, (86), 21 states have return successors, (86), 79 states have call predecessors, (86), 86 states have call successors, (86) [2024-12-02 08:15:53,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1218 transitions. [2024-12-02 08:15:53,347 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1218 transitions. Word has length 160 [2024-12-02 08:15:53,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:15:53,347 INFO L471 AbstractCegarLoop]: Abstraction has 963 states and 1218 transitions. [2024-12-02 08:15:53,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:53,348 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1218 transitions. [2024-12-02 08:15:53,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 08:15:53,349 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:53,349 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:53,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 08:15:53,350 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:53,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:53,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1746756661, now seen corresponding path program 1 times [2024-12-02 08:15:53,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:53,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53202228] [2024-12-02 08:15:53,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:53,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:53,880 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:15:53,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:53,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53202228] [2024-12-02 08:15:53,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53202228] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:53,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:15:53,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 08:15:53,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246596793] [2024-12-02 08:15:53,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:53,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 08:15:53,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:53,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 08:15:53,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-12-02 08:15:53,882 INFO L87 Difference]: Start difference. First operand 963 states and 1218 transitions. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:54,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:15:54,327 INFO L93 Difference]: Finished difference Result 2103 states and 2653 transitions. [2024-12-02 08:15:54,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 08:15:54,328 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 160 [2024-12-02 08:15:54,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:15:54,332 INFO L225 Difference]: With dead ends: 2103 [2024-12-02 08:15:54,332 INFO L226 Difference]: Without dead ends: 1143 [2024-12-02 08:15:54,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-12-02 08:15:54,334 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 241 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:15:54,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 1871 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 08:15:54,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2024-12-02 08:15:54,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 937. [2024-12-02 08:15:54,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 853 states have (on average 1.2203985932004688) internal successors, (1041), 858 states have internal predecessors, (1041), 66 states have call successors, (66), 17 states have call predecessors, (66), 17 states have return successors, (66), 61 states have call predecessors, (66), 66 states have call successors, (66) [2024-12-02 08:15:54,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1173 transitions. [2024-12-02 08:15:54,379 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1173 transitions. Word has length 160 [2024-12-02 08:15:54,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:15:54,379 INFO L471 AbstractCegarLoop]: Abstraction has 937 states and 1173 transitions. [2024-12-02 08:15:54,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:54,380 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1173 transitions. [2024-12-02 08:15:54,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 08:15:54,381 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:54,381 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:54,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 08:15:54,381 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:54,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:54,382 INFO L85 PathProgramCache]: Analyzing trace with hash -877535951, now seen corresponding path program 1 times [2024-12-02 08:15:54,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:54,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283788906] [2024-12-02 08:15:54,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:54,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:54,567 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:15:54,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:54,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283788906] [2024-12-02 08:15:54,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283788906] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:54,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:15:54,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:15:54,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301947584] [2024-12-02 08:15:54,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:54,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:15:54,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:54,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:15:54,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:15:54,569 INFO L87 Difference]: Start difference. First operand 937 states and 1173 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:54,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:15:54,697 INFO L93 Difference]: Finished difference Result 1997 states and 2522 transitions. [2024-12-02 08:15:54,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:15:54,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 160 [2024-12-02 08:15:54,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:15:54,701 INFO L225 Difference]: With dead ends: 1997 [2024-12-02 08:15:54,701 INFO L226 Difference]: Without dead ends: 1063 [2024-12-02 08:15:54,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:15:54,703 INFO L435 NwaCegarLoop]: 290 mSDtfsCounter, 141 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:15:54,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 998 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:15:54,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2024-12-02 08:15:54,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 898. [2024-12-02 08:15:54,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 814 states have (on average 1.21990171990172) internal successors, (993), 819 states have internal predecessors, (993), 66 states have call successors, (66), 17 states have call predecessors, (66), 17 states have return successors, (66), 61 states have call predecessors, (66), 66 states have call successors, (66) [2024-12-02 08:15:54,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1125 transitions. [2024-12-02 08:15:54,744 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1125 transitions. Word has length 160 [2024-12-02 08:15:54,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:15:54,744 INFO L471 AbstractCegarLoop]: Abstraction has 898 states and 1125 transitions. [2024-12-02 08:15:54,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:54,744 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1125 transitions. [2024-12-02 08:15:54,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-12-02 08:15:54,746 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:54,746 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:54,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 08:15:54,746 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:54,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:54,747 INFO L85 PathProgramCache]: Analyzing trace with hash -256326258, now seen corresponding path program 1 times [2024-12-02 08:15:54,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:54,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845471945] [2024-12-02 08:15:54,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:54,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:54,859 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:15:54,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:54,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845471945] [2024-12-02 08:15:54,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845471945] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:54,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:15:54,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 08:15:54,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449756788] [2024-12-02 08:15:54,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:54,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:15:54,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:54,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:15:54,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:15:54,861 INFO L87 Difference]: Start difference. First operand 898 states and 1125 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:55,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:15:55,005 INFO L93 Difference]: Finished difference Result 2549 states and 3196 transitions. [2024-12-02 08:15:55,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:15:55,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 161 [2024-12-02 08:15:55,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:15:55,010 INFO L225 Difference]: With dead ends: 2549 [2024-12-02 08:15:55,010 INFO L226 Difference]: Without dead ends: 1654 [2024-12-02 08:15:55,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:15:55,013 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 112 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:15:55,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 435 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:15:55,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2024-12-02 08:15:55,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 1210. [2024-12-02 08:15:55,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1101 states have (on average 1.2270663033605813) internal successors, (1351), 1106 states have internal predecessors, (1351), 86 states have call successors, (86), 22 states have call predecessors, (86), 22 states have return successors, (86), 81 states have call predecessors, (86), 86 states have call successors, (86) [2024-12-02 08:15:55,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1523 transitions. [2024-12-02 08:15:55,085 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1523 transitions. Word has length 161 [2024-12-02 08:15:55,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:15:55,085 INFO L471 AbstractCegarLoop]: Abstraction has 1210 states and 1523 transitions. [2024-12-02 08:15:55,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:55,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1523 transitions. [2024-12-02 08:15:55,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-12-02 08:15:55,087 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:55,088 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:55,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 08:15:55,088 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:55,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:55,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1267443508, now seen corresponding path program 1 times [2024-12-02 08:15:55,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:55,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869811642] [2024-12-02 08:15:55,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:55,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:55,339 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:15:55,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:55,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869811642] [2024-12-02 08:15:55,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869811642] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:55,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:15:55,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:15:55,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316247246] [2024-12-02 08:15:55,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:55,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:15:55,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:55,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:15:55,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:15:55,341 INFO L87 Difference]: Start difference. First operand 1210 states and 1523 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:55,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:15:55,526 INFO L93 Difference]: Finished difference Result 2749 states and 3460 transitions. [2024-12-02 08:15:55,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:15:55,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 161 [2024-12-02 08:15:55,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:15:55,532 INFO L225 Difference]: With dead ends: 2749 [2024-12-02 08:15:55,532 INFO L226 Difference]: Without dead ends: 1844 [2024-12-02 08:15:55,534 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:15:55,534 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 82 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:15:55,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 707 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:15:55,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2024-12-02 08:15:55,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1440. [2024-12-02 08:15:55,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1331 states have (on average 1.2299023290758828) internal successors, (1637), 1336 states have internal predecessors, (1637), 86 states have call successors, (86), 22 states have call predecessors, (86), 22 states have return successors, (86), 81 states have call predecessors, (86), 86 states have call successors, (86) [2024-12-02 08:15:55,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1809 transitions. [2024-12-02 08:15:55,640 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1809 transitions. Word has length 161 [2024-12-02 08:15:55,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:15:55,640 INFO L471 AbstractCegarLoop]: Abstraction has 1440 states and 1809 transitions. [2024-12-02 08:15:55,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:55,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1809 transitions. [2024-12-02 08:15:55,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-12-02 08:15:55,642 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:55,643 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:55,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 08:15:55,643 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:55,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:55,643 INFO L85 PathProgramCache]: Analyzing trace with hash 22429252, now seen corresponding path program 1 times [2024-12-02 08:15:55,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:55,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471708310] [2024-12-02 08:15:55,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:55,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:55,930 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:15:55,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:55,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471708310] [2024-12-02 08:15:55,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471708310] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:55,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:15:55,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:15:55,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147103935] [2024-12-02 08:15:55,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:55,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:15:55,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:55,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:15:55,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:15:55,931 INFO L87 Difference]: Start difference. First operand 1440 states and 1809 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:56,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:15:56,144 INFO L93 Difference]: Finished difference Result 2770 states and 3494 transitions. [2024-12-02 08:15:56,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:15:56,145 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2024-12-02 08:15:56,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:15:56,151 INFO L225 Difference]: With dead ends: 2770 [2024-12-02 08:15:56,151 INFO L226 Difference]: Without dead ends: 1627 [2024-12-02 08:15:56,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:15:56,154 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 136 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:15:56,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1180 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:15:56,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2024-12-02 08:15:56,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1440. [2024-12-02 08:15:56,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1331 states have (on average 1.2178812922614575) internal successors, (1621), 1336 states have internal predecessors, (1621), 86 states have call successors, (86), 22 states have call predecessors, (86), 22 states have return successors, (86), 81 states have call predecessors, (86), 86 states have call successors, (86) [2024-12-02 08:15:56,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1793 transitions. [2024-12-02 08:15:56,242 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1793 transitions. Word has length 162 [2024-12-02 08:15:56,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:15:56,243 INFO L471 AbstractCegarLoop]: Abstraction has 1440 states and 1793 transitions. [2024-12-02 08:15:56,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:56,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1793 transitions. [2024-12-02 08:15:56,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-12-02 08:15:56,245 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:56,245 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:56,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 08:15:56,245 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:56,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:56,246 INFO L85 PathProgramCache]: Analyzing trace with hash 100967454, now seen corresponding path program 1 times [2024-12-02 08:15:56,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:56,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074926893] [2024-12-02 08:15:56,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:56,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:57,356 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 54 proven. 54 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2024-12-02 08:15:57,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:57,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074926893] [2024-12-02 08:15:57,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074926893] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:15:57,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267883927] [2024-12-02 08:15:57,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:57,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:15:57,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:15:57,359 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:15:57,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 08:15:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:57,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 08:15:57,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:15:58,421 INFO L349 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2024-12-02 08:15:58,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 22 [2024-12-02 08:15:58,656 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:15:58,657 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:15:58,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267883927] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:58,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:15:58,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 24 [2024-12-02 08:15:58,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674417917] [2024-12-02 08:15:58,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:58,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 08:15:58,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:58,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 08:15:58,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=500, Unknown=0, NotChecked=0, Total=552 [2024-12-02 08:15:58,659 INFO L87 Difference]: Start difference. First operand 1440 states and 1793 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:59,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:15:59,388 INFO L93 Difference]: Finished difference Result 3192 states and 3983 transitions. [2024-12-02 08:15:59,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 08:15:59,388 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2024-12-02 08:15:59,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:15:59,394 INFO L225 Difference]: With dead ends: 3192 [2024-12-02 08:15:59,394 INFO L226 Difference]: Without dead ends: 2067 [2024-12-02 08:15:59,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 08:15:59,396 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 315 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:15:59,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 1316 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 08:15:59,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2067 states. [2024-12-02 08:15:59,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2067 to 1940. [2024-12-02 08:15:59,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1940 states, 1748 states have (on average 1.2019450800915332) internal successors, (2101), 1758 states have internal predecessors, (2101), 152 states have call successors, (152), 39 states have call predecessors, (152), 39 states have return successors, (152), 142 states have call predecessors, (152), 152 states have call successors, (152) [2024-12-02 08:15:59,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 2405 transitions. [2024-12-02 08:15:59,494 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 2405 transitions. Word has length 162 [2024-12-02 08:15:59,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:15:59,494 INFO L471 AbstractCegarLoop]: Abstraction has 1940 states and 2405 transitions. [2024-12-02 08:15:59,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:15:59,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 2405 transitions. [2024-12-02 08:15:59,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-12-02 08:15:59,497 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:15:59,497 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:15:59,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 08:15:59,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 08:15:59,697 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:15:59,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:15:59,698 INFO L85 PathProgramCache]: Analyzing trace with hash -708379172, now seen corresponding path program 1 times [2024-12-02 08:15:59,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:15:59,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118105616] [2024-12-02 08:15:59,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:15:59,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:15:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:15:59,917 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:15:59,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:15:59,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118105616] [2024-12-02 08:15:59,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118105616] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:15:59,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:15:59,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:15:59,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877535917] [2024-12-02 08:15:59,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:15:59,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:15:59,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:15:59,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:15:59,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:15:59,919 INFO L87 Difference]: Start difference. First operand 1940 states and 2405 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:00,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:16:00,154 INFO L93 Difference]: Finished difference Result 4615 states and 5674 transitions. [2024-12-02 08:16:00,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:16:00,155 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2024-12-02 08:16:00,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:16:00,164 INFO L225 Difference]: With dead ends: 4615 [2024-12-02 08:16:00,164 INFO L226 Difference]: Without dead ends: 2990 [2024-12-02 08:16:00,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:16:00,167 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 53 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:16:00,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 650 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:16:00,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2024-12-02 08:16:00,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 2862. [2024-12-02 08:16:00,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2670 states have (on average 1.195880149812734) internal successors, (3193), 2680 states have internal predecessors, (3193), 152 states have call successors, (152), 39 states have call predecessors, (152), 39 states have return successors, (152), 142 states have call predecessors, (152), 152 states have call successors, (152) [2024-12-02 08:16:00,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 3497 transitions. [2024-12-02 08:16:00,355 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 3497 transitions. Word has length 162 [2024-12-02 08:16:00,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:16:00,355 INFO L471 AbstractCegarLoop]: Abstraction has 2862 states and 3497 transitions. [2024-12-02 08:16:00,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:00,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 3497 transitions. [2024-12-02 08:16:00,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-12-02 08:16:00,359 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:16:00,359 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:16:00,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 08:16:00,359 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:16:00,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:16:00,360 INFO L85 PathProgramCache]: Analyzing trace with hash 2109697224, now seen corresponding path program 1 times [2024-12-02 08:16:00,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:16:00,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471400351] [2024-12-02 08:16:00,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:00,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:16:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:16:00,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:16:00,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471400351] [2024-12-02 08:16:00,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471400351] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:16:00,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:16:00,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:16:00,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843596647] [2024-12-02 08:16:00,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:16:00,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:16:00,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:16:00,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:16:00,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:16:00,727 INFO L87 Difference]: Start difference. First operand 2862 states and 3497 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:01,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:16:01,127 INFO L93 Difference]: Finished difference Result 5688 states and 6973 transitions. [2024-12-02 08:16:01,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:16:01,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2024-12-02 08:16:01,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:16:01,133 INFO L225 Difference]: With dead ends: 5688 [2024-12-02 08:16:01,133 INFO L226 Difference]: Without dead ends: 3235 [2024-12-02 08:16:01,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:16:01,135 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 283 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:16:01,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 819 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 08:16:01,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2024-12-02 08:16:01,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 2981. [2024-12-02 08:16:01,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2753 states have (on average 1.1565564838358156) internal successors, (3184), 2765 states have internal predecessors, (3184), 180 states have call successors, (180), 47 states have call predecessors, (180), 47 states have return successors, (180), 168 states have call predecessors, (180), 180 states have call successors, (180) [2024-12-02 08:16:01,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 3544 transitions. [2024-12-02 08:16:01,336 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 3544 transitions. Word has length 162 [2024-12-02 08:16:01,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:16:01,337 INFO L471 AbstractCegarLoop]: Abstraction has 2981 states and 3544 transitions. [2024-12-02 08:16:01,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:01,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 3544 transitions. [2024-12-02 08:16:01,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-12-02 08:16:01,340 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:16:01,341 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:16:01,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 08:16:01,341 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:16:01,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:16:01,341 INFO L85 PathProgramCache]: Analyzing trace with hash 163007068, now seen corresponding path program 1 times [2024-12-02 08:16:01,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:16:01,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281186348] [2024-12-02 08:16:01,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:01,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:16:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:01,557 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:16:01,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:16:01,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281186348] [2024-12-02 08:16:01,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281186348] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:16:01,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:16:01,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:16:01,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835579101] [2024-12-02 08:16:01,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:16:01,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:16:01,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:16:01,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:16:01,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:16:01,558 INFO L87 Difference]: Start difference. First operand 2981 states and 3544 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:01,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:16:01,836 INFO L93 Difference]: Finished difference Result 5043 states and 5988 transitions. [2024-12-02 08:16:01,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:16:01,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2024-12-02 08:16:01,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:16:01,846 INFO L225 Difference]: With dead ends: 5043 [2024-12-02 08:16:01,846 INFO L226 Difference]: Without dead ends: 3130 [2024-12-02 08:16:01,848 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:16:01,848 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 51 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:16:01,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 868 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:16:01,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3130 states. [2024-12-02 08:16:02,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3130 to 2981. [2024-12-02 08:16:02,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2753 states have (on average 1.154013803123865) internal successors, (3177), 2765 states have internal predecessors, (3177), 180 states have call successors, (180), 47 states have call predecessors, (180), 47 states have return successors, (180), 168 states have call predecessors, (180), 180 states have call successors, (180) [2024-12-02 08:16:02,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 3537 transitions. [2024-12-02 08:16:02,097 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 3537 transitions. Word has length 162 [2024-12-02 08:16:02,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:16:02,097 INFO L471 AbstractCegarLoop]: Abstraction has 2981 states and 3537 transitions. [2024-12-02 08:16:02,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:02,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 3537 transitions. [2024-12-02 08:16:02,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-12-02 08:16:02,101 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:16:02,102 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:16:02,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 08:16:02,102 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:16:02,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:16:02,102 INFO L85 PathProgramCache]: Analyzing trace with hash -646339558, now seen corresponding path program 1 times [2024-12-02 08:16:02,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:16:02,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672368529] [2024-12-02 08:16:02,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:02,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:16:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:03,059 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 54 proven. 54 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2024-12-02 08:16:03,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:16:03,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672368529] [2024-12-02 08:16:03,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672368529] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:16:03,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734419003] [2024-12-02 08:16:03,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:03,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:16:03,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:16:03,062 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:16:03,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 08:16:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:03,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 08:16:03,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:16:04,043 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2024-12-02 08:16:04,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 81 treesize of output 84 [2024-12-02 08:16:04,078 INFO L349 Elim1Store]: treesize reduction 48, result has 15.8 percent of original size [2024-12-02 08:16:04,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 101 [2024-12-02 08:16:04,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 11 [2024-12-02 08:16:04,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2024-12-02 08:16:04,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 39 [2024-12-02 08:16:04,424 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:16:04,424 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:16:04,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734419003] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:16:04,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:16:04,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 25 [2024-12-02 08:16:04,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749156127] [2024-12-02 08:16:04,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:16:04,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 08:16:04,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:16:04,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 08:16:04,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2024-12-02 08:16:04,425 INFO L87 Difference]: Start difference. First operand 2981 states and 3537 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:05,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:16:05,454 INFO L93 Difference]: Finished difference Result 5854 states and 6933 transitions. [2024-12-02 08:16:05,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 08:16:05,454 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2024-12-02 08:16:05,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:16:05,468 INFO L225 Difference]: With dead ends: 5854 [2024-12-02 08:16:05,468 INFO L226 Difference]: Without dead ends: 3941 [2024-12-02 08:16:05,471 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=120, Invalid=1070, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 08:16:05,471 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 252 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:16:05,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 1875 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 08:16:05,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2024-12-02 08:16:05,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3922. [2024-12-02 08:16:05,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3922 states, 3595 states have (on average 1.1510431154381084) internal successors, (4138), 3614 states have internal predecessors, (4138), 258 states have call successors, (258), 68 states have call predecessors, (258), 68 states have return successors, (258), 239 states have call predecessors, (258), 258 states have call successors, (258) [2024-12-02 08:16:05,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3922 states to 3922 states and 4654 transitions. [2024-12-02 08:16:05,725 INFO L78 Accepts]: Start accepts. Automaton has 3922 states and 4654 transitions. Word has length 162 [2024-12-02 08:16:05,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:16:05,725 INFO L471 AbstractCegarLoop]: Abstraction has 3922 states and 4654 transitions. [2024-12-02 08:16:05,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:05,726 INFO L276 IsEmpty]: Start isEmpty. Operand 3922 states and 4654 transitions. [2024-12-02 08:16:05,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-12-02 08:16:05,729 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:16:05,729 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:16:05,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 08:16:05,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 08:16:05,930 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:16:05,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:16:05,930 INFO L85 PathProgramCache]: Analyzing trace with hash -331515133, now seen corresponding path program 1 times [2024-12-02 08:16:05,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:16:05,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095731489] [2024-12-02 08:16:05,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:05,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:16:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:06,508 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:16:06,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:16:06,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095731489] [2024-12-02 08:16:06,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095731489] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:16:06,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:16:06,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 08:16:06,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142125861] [2024-12-02 08:16:06,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:16:06,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 08:16:06,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:16:06,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 08:16:06,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-12-02 08:16:06,510 INFO L87 Difference]: Start difference. First operand 3922 states and 4654 transitions. Second operand has 12 states, 11 states have (on average 5.909090909090909) internal successors, (65), 12 states have internal predecessors, (65), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2024-12-02 08:16:07,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:16:07,194 INFO L93 Difference]: Finished difference Result 6186 states and 7347 transitions. [2024-12-02 08:16:07,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 08:16:07,194 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.909090909090909) internal successors, (65), 12 states have internal predecessors, (65), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 162 [2024-12-02 08:16:07,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:16:07,205 INFO L225 Difference]: With dead ends: 6186 [2024-12-02 08:16:07,205 INFO L226 Difference]: Without dead ends: 3914 [2024-12-02 08:16:07,208 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2024-12-02 08:16:07,209 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 293 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:16:07,209 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 947 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 08:16:07,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2024-12-02 08:16:07,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 3794. [2024-12-02 08:16:07,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3794 states, 3467 states have (on average 1.1468128064609173) internal successors, (3976), 3486 states have internal predecessors, (3976), 258 states have call successors, (258), 68 states have call predecessors, (258), 68 states have return successors, (258), 239 states have call predecessors, (258), 258 states have call successors, (258) [2024-12-02 08:16:07,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3794 states to 3794 states and 4492 transitions. [2024-12-02 08:16:07,448 INFO L78 Accepts]: Start accepts. Automaton has 3794 states and 4492 transitions. Word has length 162 [2024-12-02 08:16:07,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:16:07,448 INFO L471 AbstractCegarLoop]: Abstraction has 3794 states and 4492 transitions. [2024-12-02 08:16:07,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.909090909090909) internal successors, (65), 12 states have internal predecessors, (65), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2024-12-02 08:16:07,448 INFO L276 IsEmpty]: Start isEmpty. Operand 3794 states and 4492 transitions. [2024-12-02 08:16:07,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-12-02 08:16:07,450 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:16:07,450 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:16:07,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 08:16:07,451 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:16:07,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:16:07,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1982343074, now seen corresponding path program 1 times [2024-12-02 08:16:07,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:16:07,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622351392] [2024-12-02 08:16:07,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:07,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:16:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:08,036 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 54 proven. 54 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2024-12-02 08:16:08,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:16:08,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622351392] [2024-12-02 08:16:08,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622351392] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:16:08,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736806333] [2024-12-02 08:16:08,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:08,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:16:08,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:16:08,038 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:16:08,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 08:16:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:08,301 INFO L256 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-12-02 08:16:08,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:16:08,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 08:16:08,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-12-02 08:16:08,852 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2024-12-02 08:16:08,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 76 [2024-12-02 08:16:08,893 INFO L349 Elim1Store]: treesize reduction 44, result has 17.0 percent of original size [2024-12-02 08:16:08,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 93 [2024-12-02 08:16:08,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 11 [2024-12-02 08:16:09,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2024-12-02 08:16:09,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 29 [2024-12-02 08:16:09,281 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2024-12-02 08:16:09,281 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:16:09,600 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:16:09,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736806333] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 08:16:09,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:16:09,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13, 11] total 24 [2024-12-02 08:16:09,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600761967] [2024-12-02 08:16:09,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:16:09,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:16:09,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:16:09,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:16:09,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2024-12-02 08:16:09,602 INFO L87 Difference]: Start difference. First operand 3794 states and 4492 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:10,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:16:10,119 INFO L93 Difference]: Finished difference Result 5784 states and 6841 transitions. [2024-12-02 08:16:10,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 08:16:10,119 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2024-12-02 08:16:10,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:16:10,126 INFO L225 Difference]: With dead ends: 5784 [2024-12-02 08:16:10,126 INFO L226 Difference]: Without dead ends: 3955 [2024-12-02 08:16:10,128 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2024-12-02 08:16:10,128 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 53 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:16:10,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 988 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:16:10,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2024-12-02 08:16:10,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3264. [2024-12-02 08:16:10,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3264 states, 3038 states have (on average 1.1497695852534562) internal successors, (3493), 3051 states have internal predecessors, (3493), 178 states have call successors, (178), 47 states have call predecessors, (178), 47 states have return successors, (178), 165 states have call predecessors, (178), 178 states have call successors, (178) [2024-12-02 08:16:10,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3264 states to 3264 states and 3849 transitions. [2024-12-02 08:16:10,292 INFO L78 Accepts]: Start accepts. Automaton has 3264 states and 3849 transitions. Word has length 162 [2024-12-02 08:16:10,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:16:10,293 INFO L471 AbstractCegarLoop]: Abstraction has 3264 states and 3849 transitions. [2024-12-02 08:16:10,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:10,293 INFO L276 IsEmpty]: Start isEmpty. Operand 3264 states and 3849 transitions. [2024-12-02 08:16:10,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-12-02 08:16:10,295 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:16:10,295 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:16:10,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 08:16:10,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:16:10,496 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:16:10,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:16:10,496 INFO L85 PathProgramCache]: Analyzing trace with hash 756756521, now seen corresponding path program 1 times [2024-12-02 08:16:10,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:16:10,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331685598] [2024-12-02 08:16:10,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:10,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:16:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:11,011 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:16:11,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:16:11,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331685598] [2024-12-02 08:16:11,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331685598] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:16:11,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:16:11,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 08:16:11,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917468709] [2024-12-02 08:16:11,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:16:11,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 08:16:11,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:16:11,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 08:16:11,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 08:16:11,013 INFO L87 Difference]: Start difference. First operand 3264 states and 3849 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:11,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:16:11,516 INFO L93 Difference]: Finished difference Result 5541 states and 6573 transitions. [2024-12-02 08:16:11,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 08:16:11,516 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 164 [2024-12-02 08:16:11,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:16:11,526 INFO L225 Difference]: With dead ends: 5541 [2024-12-02 08:16:11,526 INFO L226 Difference]: Without dead ends: 3597 [2024-12-02 08:16:11,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2024-12-02 08:16:11,529 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 128 mSDsluCounter, 1868 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2128 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:16:11,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2128 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 08:16:11,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3597 states. [2024-12-02 08:16:11,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3597 to 3288. [2024-12-02 08:16:11,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3288 states, 3062 states have (on average 1.1485956890920967) internal successors, (3517), 3075 states have internal predecessors, (3517), 178 states have call successors, (178), 47 states have call predecessors, (178), 47 states have return successors, (178), 165 states have call predecessors, (178), 178 states have call successors, (178) [2024-12-02 08:16:11,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3288 states to 3288 states and 3873 transitions. [2024-12-02 08:16:11,733 INFO L78 Accepts]: Start accepts. Automaton has 3288 states and 3873 transitions. Word has length 164 [2024-12-02 08:16:11,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:16:11,733 INFO L471 AbstractCegarLoop]: Abstraction has 3288 states and 3873 transitions. [2024-12-02 08:16:11,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:11,734 INFO L276 IsEmpty]: Start isEmpty. Operand 3288 states and 3873 transitions. [2024-12-02 08:16:11,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-12-02 08:16:11,736 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:16:11,736 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:16:11,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-12-02 08:16:11,736 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:16:11,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:16:11,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1457821099, now seen corresponding path program 1 times [2024-12-02 08:16:11,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:16:11,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564138443] [2024-12-02 08:16:11,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:11,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:16:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:11,990 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:16:11,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:16:11,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564138443] [2024-12-02 08:16:11,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564138443] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:16:11,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:16:11,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:16:11,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792664419] [2024-12-02 08:16:11,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:16:11,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:16:11,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:16:11,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:16:11,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:16:11,991 INFO L87 Difference]: Start difference. First operand 3288 states and 3873 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:12,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:16:12,228 INFO L93 Difference]: Finished difference Result 5458 states and 6435 transitions. [2024-12-02 08:16:12,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:16:12,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 164 [2024-12-02 08:16:12,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:16:12,233 INFO L225 Difference]: With dead ends: 5458 [2024-12-02 08:16:12,234 INFO L226 Difference]: Without dead ends: 3482 [2024-12-02 08:16:12,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:16:12,237 INFO L435 NwaCegarLoop]: 238 mSDtfsCounter, 88 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:16:12,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 752 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:16:12,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3482 states. [2024-12-02 08:16:12,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3482 to 3270. [2024-12-02 08:16:12,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3270 states, 3044 states have (on average 1.1475032851511169) internal successors, (3493), 3057 states have internal predecessors, (3493), 178 states have call successors, (178), 47 states have call predecessors, (178), 47 states have return successors, (178), 165 states have call predecessors, (178), 178 states have call successors, (178) [2024-12-02 08:16:12,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 3849 transitions. [2024-12-02 08:16:12,474 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 3849 transitions. Word has length 164 [2024-12-02 08:16:12,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:16:12,474 INFO L471 AbstractCegarLoop]: Abstraction has 3270 states and 3849 transitions. [2024-12-02 08:16:12,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:12,474 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 3849 transitions. [2024-12-02 08:16:12,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-12-02 08:16:12,478 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:16:12,478 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:16:12,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-12-02 08:16:12,478 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:16:12,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:16:12,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1047824368, now seen corresponding path program 1 times [2024-12-02 08:16:12,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:16:12,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840519113] [2024-12-02 08:16:12,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:12,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:16:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:12,686 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-12-02 08:16:12,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:16:12,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840519113] [2024-12-02 08:16:12,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840519113] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:16:12,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979949154] [2024-12-02 08:16:12,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:12,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:16:12,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:16:12,689 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:16:12,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 08:16:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:12,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 08:16:12,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:16:12,962 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:16:12,962 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:16:12,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979949154] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:16:12,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 08:16:12,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 11 [2024-12-02 08:16:12,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380371404] [2024-12-02 08:16:12,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:16:12,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:16:12,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:16:12,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:16:12,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 08:16:12,964 INFO L87 Difference]: Start difference. First operand 3270 states and 3849 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:13,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:16:13,199 INFO L93 Difference]: Finished difference Result 3328 states and 3920 transitions. [2024-12-02 08:16:13,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:16:13,200 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 164 [2024-12-02 08:16:13,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:16:13,205 INFO L225 Difference]: With dead ends: 3328 [2024-12-02 08:16:13,205 INFO L226 Difference]: Without dead ends: 3326 [2024-12-02 08:16:13,206 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 08:16:13,207 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 0 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:16:13,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 730 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:16:13,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3326 states. [2024-12-02 08:16:13,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3326 to 3326. [2024-12-02 08:16:13,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3326 states, 3100 states have (on average 1.1448387096774193) internal successors, (3549), 3113 states have internal predecessors, (3549), 178 states have call successors, (178), 47 states have call predecessors, (178), 47 states have return successors, (178), 165 states have call predecessors, (178), 178 states have call successors, (178) [2024-12-02 08:16:13,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3326 states to 3326 states and 3905 transitions. [2024-12-02 08:16:13,353 INFO L78 Accepts]: Start accepts. Automaton has 3326 states and 3905 transitions. Word has length 164 [2024-12-02 08:16:13,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:16:13,354 INFO L471 AbstractCegarLoop]: Abstraction has 3326 states and 3905 transitions. [2024-12-02 08:16:13,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:13,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3326 states and 3905 transitions. [2024-12-02 08:16:13,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-12-02 08:16:13,355 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:16:13,356 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:16:13,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 08:16:13,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-12-02 08:16:13,556 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:16:13,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:16:13,557 INFO L85 PathProgramCache]: Analyzing trace with hash -2135546323, now seen corresponding path program 1 times [2024-12-02 08:16:13,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:16:13,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688372933] [2024-12-02 08:16:13,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:13,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:16:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:14,148 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:16:14,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:16:14,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688372933] [2024-12-02 08:16:14,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688372933] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:16:14,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:16:14,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 08:16:14,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470020373] [2024-12-02 08:16:14,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:16:14,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 08:16:14,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:16:14,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 08:16:14,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 08:16:14,149 INFO L87 Difference]: Start difference. First operand 3326 states and 3905 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:14,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:16:14,666 INFO L93 Difference]: Finished difference Result 5644 states and 6632 transitions. [2024-12-02 08:16:14,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 08:16:14,666 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 164 [2024-12-02 08:16:14,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:16:14,671 INFO L225 Difference]: With dead ends: 5644 [2024-12-02 08:16:14,671 INFO L226 Difference]: Without dead ends: 3656 [2024-12-02 08:16:14,673 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-12-02 08:16:14,674 INFO L435 NwaCegarLoop]: 237 mSDtfsCounter, 224 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:16:14,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 1627 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 08:16:14,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3656 states. [2024-12-02 08:16:14,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3656 to 3196. [2024-12-02 08:16:14,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3196 states, 2970 states have (on average 1.144107744107744) internal successors, (3398), 2983 states have internal predecessors, (3398), 178 states have call successors, (178), 47 states have call predecessors, (178), 47 states have return successors, (178), 165 states have call predecessors, (178), 178 states have call successors, (178) [2024-12-02 08:16:14,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3196 states to 3196 states and 3754 transitions. [2024-12-02 08:16:14,823 INFO L78 Accepts]: Start accepts. Automaton has 3196 states and 3754 transitions. Word has length 164 [2024-12-02 08:16:14,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:16:14,823 INFO L471 AbstractCegarLoop]: Abstraction has 3196 states and 3754 transitions. [2024-12-02 08:16:14,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:14,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3196 states and 3754 transitions. [2024-12-02 08:16:14,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-12-02 08:16:14,825 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:16:14,825 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:16:14,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-12-02 08:16:14,825 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:16:14,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:16:14,825 INFO L85 PathProgramCache]: Analyzing trace with hash -588988097, now seen corresponding path program 1 times [2024-12-02 08:16:14,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:16:14,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343667093] [2024-12-02 08:16:14,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:14,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:16:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:15,435 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:16:15,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:16:15,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343667093] [2024-12-02 08:16:15,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343667093] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:16:15,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:16:15,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 08:16:15,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390757287] [2024-12-02 08:16:15,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:16:15,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 08:16:15,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:16:15,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 08:16:15,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 08:16:15,437 INFO L87 Difference]: Start difference. First operand 3196 states and 3754 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:16,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:16:16,190 INFO L93 Difference]: Finished difference Result 5126 states and 6010 transitions. [2024-12-02 08:16:16,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 08:16:16,190 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 164 [2024-12-02 08:16:16,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:16:16,195 INFO L225 Difference]: With dead ends: 5126 [2024-12-02 08:16:16,195 INFO L226 Difference]: Without dead ends: 3216 [2024-12-02 08:16:16,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-12-02 08:16:16,197 INFO L435 NwaCegarLoop]: 258 mSDtfsCounter, 221 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:16:16,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 2012 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 08:16:16,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3216 states. [2024-12-02 08:16:16,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3216 to 2968. [2024-12-02 08:16:16,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2968 states, 2772 states have (on average 1.1443001443001444) internal successors, (3172), 2783 states have internal predecessors, (3172), 154 states have call successors, (154), 41 states have call predecessors, (154), 41 states have return successors, (154), 143 states have call predecessors, (154), 154 states have call successors, (154) [2024-12-02 08:16:16,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2968 states to 2968 states and 3480 transitions. [2024-12-02 08:16:16,350 INFO L78 Accepts]: Start accepts. Automaton has 2968 states and 3480 transitions. Word has length 164 [2024-12-02 08:16:16,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:16:16,351 INFO L471 AbstractCegarLoop]: Abstraction has 2968 states and 3480 transitions. [2024-12-02 08:16:16,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:16,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2968 states and 3480 transitions. [2024-12-02 08:16:16,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-12-02 08:16:16,353 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:16:16,353 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:16:16,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-12-02 08:16:16,353 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:16:16,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:16:16,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1991652549, now seen corresponding path program 1 times [2024-12-02 08:16:16,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:16:16,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873968684] [2024-12-02 08:16:16,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:16,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:16:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:16,770 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:16:16,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:16:16,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873968684] [2024-12-02 08:16:16,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873968684] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:16:16,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:16:16,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 08:16:16,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20255065] [2024-12-02 08:16:16,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:16:16,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 08:16:16,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:16:16,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 08:16:16,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 08:16:16,771 INFO L87 Difference]: Start difference. First operand 2968 states and 3480 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:17,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:16:17,137 INFO L93 Difference]: Finished difference Result 4878 states and 5744 transitions. [2024-12-02 08:16:17,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 08:16:17,137 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 164 [2024-12-02 08:16:17,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:16:17,141 INFO L225 Difference]: With dead ends: 4878 [2024-12-02 08:16:17,141 INFO L226 Difference]: Without dead ends: 3099 [2024-12-02 08:16:17,143 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2024-12-02 08:16:17,143 INFO L435 NwaCegarLoop]: 277 mSDtfsCounter, 128 mSDsluCounter, 1972 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2249 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:16:17,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2249 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 08:16:17,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3099 states. [2024-12-02 08:16:17,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3099 to 2992. [2024-12-02 08:16:17,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2992 states, 2796 states have (on average 1.1430615164520743) internal successors, (3196), 2807 states have internal predecessors, (3196), 154 states have call successors, (154), 41 states have call predecessors, (154), 41 states have return successors, (154), 143 states have call predecessors, (154), 154 states have call successors, (154) [2024-12-02 08:16:17,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2992 states to 2992 states and 3504 transitions. [2024-12-02 08:16:17,281 INFO L78 Accepts]: Start accepts. Automaton has 2992 states and 3504 transitions. Word has length 164 [2024-12-02 08:16:17,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:16:17,281 INFO L471 AbstractCegarLoop]: Abstraction has 2992 states and 3504 transitions. [2024-12-02 08:16:17,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:17,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2992 states and 3504 transitions. [2024-12-02 08:16:17,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-12-02 08:16:17,292 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:16:17,292 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:16:17,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-12-02 08:16:17,293 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:16:17,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:16:17,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1290587971, now seen corresponding path program 1 times [2024-12-02 08:16:17,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:16:17,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405247517] [2024-12-02 08:16:17,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:17,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:16:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:17,532 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:16:17,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:16:17,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405247517] [2024-12-02 08:16:17,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405247517] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:16:17,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:16:17,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:16:17,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063509205] [2024-12-02 08:16:17,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:16:17,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:16:17,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:16:17,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:16:17,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:16:17,534 INFO L87 Difference]: Start difference. First operand 2992 states and 3504 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:17,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:16:17,711 INFO L93 Difference]: Finished difference Result 4789 states and 5595 transitions. [2024-12-02 08:16:17,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:16:17,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 164 [2024-12-02 08:16:17,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:16:17,715 INFO L225 Difference]: With dead ends: 4789 [2024-12-02 08:16:17,715 INFO L226 Difference]: Without dead ends: 2978 [2024-12-02 08:16:17,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:16:17,717 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 78 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:16:17,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 664 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:16:17,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2024-12-02 08:16:17,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 2748. [2024-12-02 08:16:17,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2748 states, 2601 states have (on average 1.1430219146482121) internal successors, (2973), 2608 states have internal predecessors, (2973), 114 states have call successors, (114), 32 states have call predecessors, (114), 32 states have return successors, (114), 107 states have call predecessors, (114), 114 states have call successors, (114) [2024-12-02 08:16:17,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2748 states to 2748 states and 3201 transitions. [2024-12-02 08:16:17,843 INFO L78 Accepts]: Start accepts. Automaton has 2748 states and 3201 transitions. Word has length 164 [2024-12-02 08:16:17,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:16:17,843 INFO L471 AbstractCegarLoop]: Abstraction has 2748 states and 3201 transitions. [2024-12-02 08:16:17,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:17,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2748 states and 3201 transitions. [2024-12-02 08:16:17,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-12-02 08:16:17,844 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:16:17,844 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:16:17,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-12-02 08:16:17,844 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:16:17,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:16:17,845 INFO L85 PathProgramCache]: Analyzing trace with hash 391664693, now seen corresponding path program 1 times [2024-12-02 08:16:17,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:16:17,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127320133] [2024-12-02 08:16:17,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:17,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:16:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:18,197 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:16:18,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:16:18,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127320133] [2024-12-02 08:16:18,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127320133] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:16:18,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:16:18,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:16:18,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492223364] [2024-12-02 08:16:18,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:16:18,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:16:18,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:16:18,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:16:18,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:16:18,198 INFO L87 Difference]: Start difference. First operand 2748 states and 3201 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 08:16:18,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:16:18,687 INFO L93 Difference]: Finished difference Result 6957 states and 8061 transitions. [2024-12-02 08:16:18,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:16:18,688 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 166 [2024-12-02 08:16:18,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:16:18,692 INFO L225 Difference]: With dead ends: 6957 [2024-12-02 08:16:18,692 INFO L226 Difference]: Without dead ends: 5222 [2024-12-02 08:16:18,694 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-12-02 08:16:18,695 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 402 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:16:18,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 637 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 08:16:18,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5222 states. [2024-12-02 08:16:18,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5222 to 5216. [2024-12-02 08:16:18,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5216 states, 4997 states have (on average 1.1376826095657395) internal successors, (5685), 5012 states have internal predecessors, (5685), 170 states have call successors, (170), 48 states have call predecessors, (170), 48 states have return successors, (170), 155 states have call predecessors, (170), 170 states have call successors, (170) [2024-12-02 08:16:18,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5216 states to 5216 states and 6025 transitions. [2024-12-02 08:16:18,916 INFO L78 Accepts]: Start accepts. Automaton has 5216 states and 6025 transitions. Word has length 166 [2024-12-02 08:16:18,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:16:18,916 INFO L471 AbstractCegarLoop]: Abstraction has 5216 states and 6025 transitions. [2024-12-02 08:16:18,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 08:16:18,916 INFO L276 IsEmpty]: Start isEmpty. Operand 5216 states and 6025 transitions. [2024-12-02 08:16:18,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-12-02 08:16:18,920 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:16:18,920 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:16:18,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-12-02 08:16:18,920 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:16:18,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:16:18,920 INFO L85 PathProgramCache]: Analyzing trace with hash -2059616136, now seen corresponding path program 1 times [2024-12-02 08:16:18,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:16:18,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403054826] [2024-12-02 08:16:18,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:18,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:16:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:19,139 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:16:19,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:16:19,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403054826] [2024-12-02 08:16:19,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403054826] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:16:19,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:16:19,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:16:19,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640815279] [2024-12-02 08:16:19,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:16:19,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:16:19,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:16:19,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:16:19,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:16:19,141 INFO L87 Difference]: Start difference. First operand 5216 states and 6025 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:19,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:16:19,565 INFO L93 Difference]: Finished difference Result 7889 states and 9110 transitions. [2024-12-02 08:16:19,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 08:16:19,565 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 167 [2024-12-02 08:16:19,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:16:19,572 INFO L225 Difference]: With dead ends: 7889 [2024-12-02 08:16:19,572 INFO L226 Difference]: Without dead ends: 7887 [2024-12-02 08:16:19,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-12-02 08:16:19,574 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 101 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:16:19,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 1656 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:16:19,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7887 states. [2024-12-02 08:16:19,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7887 to 7444. [2024-12-02 08:16:19,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7444 states, 7225 states have (on average 1.1395155709342562) internal successors, (8233), 7240 states have internal predecessors, (8233), 170 states have call successors, (170), 48 states have call predecessors, (170), 48 states have return successors, (170), 155 states have call predecessors, (170), 170 states have call successors, (170) [2024-12-02 08:16:19,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7444 states to 7444 states and 8573 transitions. [2024-12-02 08:16:19,876 INFO L78 Accepts]: Start accepts. Automaton has 7444 states and 8573 transitions. Word has length 167 [2024-12-02 08:16:19,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:16:19,876 INFO L471 AbstractCegarLoop]: Abstraction has 7444 states and 8573 transitions. [2024-12-02 08:16:19,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:19,876 INFO L276 IsEmpty]: Start isEmpty. Operand 7444 states and 8573 transitions. [2024-12-02 08:16:19,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-12-02 08:16:19,879 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:16:19,879 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:16:19,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-12-02 08:16:19,880 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:16:19,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:16:19,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1840984374, now seen corresponding path program 1 times [2024-12-02 08:16:19,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:16:19,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276279529] [2024-12-02 08:16:19,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:19,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:16:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:16:20,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:16:20,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276279529] [2024-12-02 08:16:20,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276279529] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:16:20,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:16:20,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 08:16:20,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781040634] [2024-12-02 08:16:20,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:16:20,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 08:16:20,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:16:20,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 08:16:20,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 08:16:20,312 INFO L87 Difference]: Start difference. First operand 7444 states and 8573 transitions. Second operand has 9 states, 8 states have (on average 8.75) internal successors, (70), 9 states have internal predecessors, (70), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2024-12-02 08:16:20,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:16:20,950 INFO L93 Difference]: Finished difference Result 12214 states and 14066 transitions. [2024-12-02 08:16:20,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 08:16:20,951 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 9 states have internal predecessors, (70), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 167 [2024-12-02 08:16:20,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:16:20,959 INFO L225 Difference]: With dead ends: 12214 [2024-12-02 08:16:20,959 INFO L226 Difference]: Without dead ends: 7667 [2024-12-02 08:16:20,963 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-12-02 08:16:20,963 INFO L435 NwaCegarLoop]: 244 mSDtfsCounter, 188 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:16:20,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1166 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 08:16:20,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7667 states. [2024-12-02 08:16:21,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7667 to 7288. [2024-12-02 08:16:21,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7288 states, 7103 states have (on average 1.1396592988877938) internal successors, (8095), 7114 states have internal predecessors, (8095), 142 states have call successors, (142), 42 states have call predecessors, (142), 42 states have return successors, (142), 131 states have call predecessors, (142), 142 states have call successors, (142) [2024-12-02 08:16:21,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7288 states to 7288 states and 8379 transitions. [2024-12-02 08:16:21,174 INFO L78 Accepts]: Start accepts. Automaton has 7288 states and 8379 transitions. Word has length 167 [2024-12-02 08:16:21,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:16:21,174 INFO L471 AbstractCegarLoop]: Abstraction has 7288 states and 8379 transitions. [2024-12-02 08:16:21,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 9 states have internal predecessors, (70), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2024-12-02 08:16:21,174 INFO L276 IsEmpty]: Start isEmpty. Operand 7288 states and 8379 transitions. [2024-12-02 08:16:21,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2024-12-02 08:16:21,194 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:16:21,194 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:16:21,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-12-02 08:16:21,194 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:16:21,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:16:21,194 INFO L85 PathProgramCache]: Analyzing trace with hash -364408270, now seen corresponding path program 1 times [2024-12-02 08:16:21,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:16:21,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971643326] [2024-12-02 08:16:21,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:21,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:16:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:22,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3198 backedges. 3 proven. 37 refuted. 0 times theorem prover too weak. 3158 trivial. 0 not checked. [2024-12-02 08:16:22,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:16:22,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971643326] [2024-12-02 08:16:22,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971643326] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:16:22,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121809823] [2024-12-02 08:16:22,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:16:22,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:16:22,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:16:22,693 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:16:22,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 08:16:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:16:22,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 08:16:22,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:16:23,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 08:16:23,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 59 [2024-12-02 08:16:23,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-12-02 08:16:23,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2024-12-02 08:16:23,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2024-12-02 08:16:23,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 39 [2024-12-02 08:16:23,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3198 backedges. 3 proven. 191 refuted. 0 times theorem prover too weak. 3004 trivial. 0 not checked. [2024-12-02 08:16:23,972 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:16:24,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2024-12-02 08:16:24,223 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:16:24,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 49 [2024-12-02 08:16:24,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2024-12-02 08:16:24,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3198 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3174 trivial. 0 not checked. [2024-12-02 08:16:24,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121809823] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 08:16:24,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:16:24,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12, 9] total 16 [2024-12-02 08:16:24,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758234872] [2024-12-02 08:16:24,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:16:24,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:16:24,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:16:24,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:16:24,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-12-02 08:16:24,388 INFO L87 Difference]: Start difference. First operand 7288 states and 8379 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:25,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:16:25,097 INFO L93 Difference]: Finished difference Result 12066 states and 13876 transitions. [2024-12-02 08:16:25,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 08:16:25,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 323 [2024-12-02 08:16:25,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:16:25,099 INFO L225 Difference]: With dead ends: 12066 [2024-12-02 08:16:25,099 INFO L226 Difference]: Without dead ends: 0 [2024-12-02 08:16:25,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 642 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-12-02 08:16:25,107 INFO L435 NwaCegarLoop]: 248 mSDtfsCounter, 95 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:16:25,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 1489 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 08:16:25,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-12-02 08:16:25,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-12-02 08:16:25,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:16:25,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-12-02 08:16:25,108 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 323 [2024-12-02 08:16:25,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:16:25,109 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 08:16:25,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:16:25,109 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-12-02 08:16:25,109 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-02 08:16:25,111 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-02 08:16:25,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 08:16:25,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77e071ca-c052-483d-8d9c-3d9b353e593d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-12-02 08:16:25,320 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:16:25,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-12-02 08:18:11,066 WARN L286 SmtUtils]: Spent 1.66m on a formula simplification. DAG size of input: 429 DAG size of output: 471 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or)