./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/kundu.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/kundu.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/bin/uautomizer-verify-4GaUIPS5ZU --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 941010afb19994aa6e2e07f5c4b80f87a4c5e60b4e0ef3217e91339d9dc3aacb --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:56:36,843 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:56:36,917 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 21:56:36,922 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:56:36,923 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:56:36,955 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:56:36,956 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:56:36,957 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:56:36,957 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:56:36,958 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:56:36,958 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:56:36,959 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:56:36,960 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:56:36,960 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:56:36,961 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:56:36,961 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:56:36,962 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:56:36,962 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:56:36,963 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:56:36,963 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:56:36,964 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:56:36,964 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:56:36,965 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:56:36,965 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:56:36,966 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:56:36,966 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:56:36,967 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:56:36,967 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:56:36,967 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:56:36,968 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:56:36,968 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:56:36,969 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:56:36,969 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:56:36,970 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:56:36,970 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:56:36,971 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:56:36,971 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:56:36,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:56:36,972 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:56:36,972 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:56:36,973 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:56:36,973 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:56:36,974 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 941010afb19994aa6e2e07f5c4b80f87a4c5e60b4e0ef3217e91339d9dc3aacb [2024-10-31 21:56:37,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:56:37,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:56:37,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:56:37,311 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:56:37,312 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:56:37,314 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/systemc/kundu.cil.c Unable to find full path for "g++" [2024-10-31 21:56:39,412 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:56:39,675 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:56:39,676 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/sv-benchmarks/c/systemc/kundu.cil.c [2024-10-31 21:56:39,689 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/bin/uautomizer-verify-4GaUIPS5ZU/data/982569506/6b6f6cba30bc44c19556390ec477639f/FLAGd1cfcab3a [2024-10-31 21:56:40,015 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/bin/uautomizer-verify-4GaUIPS5ZU/data/982569506/6b6f6cba30bc44c19556390ec477639f [2024-10-31 21:56:40,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:56:40,021 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:56:40,023 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:56:40,027 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:56:40,041 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:56:40,046 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:56:40" (1/1) ... [2024-10-31 21:56:40,048 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32a212aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:40, skipping insertion in model container [2024-10-31 21:56:40,048 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:56:40" (1/1) ... [2024-10-31 21:56:40,128 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:56:40,351 WARN L251 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_c3479804-6dab-4efb-a1e0-5720392db852/sv-benchmarks/c/systemc/kundu.cil.c[635,648] [2024-10-31 21:56:40,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:56:40,445 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:56:40,455 WARN L251 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_c3479804-6dab-4efb-a1e0-5720392db852/sv-benchmarks/c/systemc/kundu.cil.c[635,648] [2024-10-31 21:56:40,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:56:40,523 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:56:40,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:40 WrapperNode [2024-10-31 21:56:40,524 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:56:40,526 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:56:40,526 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:56:40,526 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:56:40,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:40" (1/1) ... [2024-10-31 21:56:40,540 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:40" (1/1) ... [2024-10-31 21:56:40,569 INFO L138 Inliner]: procedures = 34, calls = 40, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 317 [2024-10-31 21:56:40,570 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:56:40,571 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:56:40,571 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:56:40,571 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:56:40,586 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:40" (1/1) ... [2024-10-31 21:56:40,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:40" (1/1) ... [2024-10-31 21:56:40,590 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:40" (1/1) ... [2024-10-31 21:56:40,606 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 21:56:40,606 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:40" (1/1) ... [2024-10-31 21:56:40,607 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:40" (1/1) ... [2024-10-31 21:56:40,612 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:40" (1/1) ... [2024-10-31 21:56:40,619 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:40" (1/1) ... [2024-10-31 21:56:40,621 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:40" (1/1) ... [2024-10-31 21:56:40,623 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:40" (1/1) ... [2024-10-31 21:56:40,627 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:56:40,628 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:56:40,628 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:56:40,628 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:56:40,629 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:40" (1/1) ... [2024-10-31 21:56:40,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:56:40,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:40,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:56:40,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:56:40,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:56:40,716 INFO L130 BoogieDeclarations]: Found specification of procedure write_data [2024-10-31 21:56:40,716 INFO L138 BoogieDeclarations]: Found implementation of procedure write_data [2024-10-31 21:56:40,716 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-10-31 21:56:40,716 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-10-31 21:56:40,716 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-10-31 21:56:40,716 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-10-31 21:56:40,716 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-10-31 21:56:40,717 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-10-31 21:56:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-10-31 21:56:40,717 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-10-31 21:56:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-10-31 21:56:40,717 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-10-31 21:56:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 21:56:40,718 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-10-31 21:56:40,718 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-10-31 21:56:40,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:56:40,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:56:40,800 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:56:40,802 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:56:41,317 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-10-31 21:56:41,317 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:56:41,346 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:56:41,346 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-31 21:56:41,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:56:41 BoogieIcfgContainer [2024-10-31 21:56:41,347 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:56:41,353 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:56:41,355 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:56:41,358 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:56:41,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:56:40" (1/3) ... [2024-10-31 21:56:41,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71aad625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:56:41, skipping insertion in model container [2024-10-31 21:56:41,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:40" (2/3) ... [2024-10-31 21:56:41,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71aad625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:56:41, skipping insertion in model container [2024-10-31 21:56:41,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:56:41" (3/3) ... [2024-10-31 21:56:41,364 INFO L112 eAbstractionObserver]: Analyzing ICFG kundu.cil.c [2024-10-31 21:56:41,380 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:56:41,381 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 21:56:41,444 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:56:41,450 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;@3fd4fb31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:56:41,450 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 21:56:41,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 135 states, 108 states have (on average 1.5185185185185186) internal successors, (164), 112 states have internal predecessors, (164), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-10-31 21:56:41,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-31 21:56:41,465 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:41,465 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:41,466 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:41,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:41,471 INFO L85 PathProgramCache]: Analyzing trace with hash -2012698059, now seen corresponding path program 1 times [2024-10-31 21:56:41,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:41,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016239113] [2024-10-31 21:56:41,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:41,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:41,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:56:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:41,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-31 21:56:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:41,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 21:56:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:41,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-31 21:56:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:41,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-31 21:56:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:41,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:41,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:41,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016239113] [2024-10-31 21:56:41,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016239113] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:41,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:41,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 21:56:41,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063392564] [2024-10-31 21:56:41,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:41,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 21:56:41,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:41,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 21:56:41,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 21:56:41,850 INFO L87 Difference]: Start difference. First operand has 135 states, 108 states have (on average 1.5185185185185186) internal successors, (164), 112 states have internal predecessors, (164), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 21:56:42,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:42,135 INFO L93 Difference]: Finished difference Result 279 states and 421 transitions. [2024-10-31 21:56:42,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 21:56:42,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2024-10-31 21:56:42,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:42,152 INFO L225 Difference]: With dead ends: 279 [2024-10-31 21:56:42,153 INFO L226 Difference]: Without dead ends: 146 [2024-10-31 21:56:42,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:56:42,163 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 221 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:42,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 298 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 21:56:42,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-10-31 21:56:42,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 128. [2024-10-31 21:56:42,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 103 states have (on average 1.4466019417475728) internal successors, (149), 106 states have internal predecessors, (149), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-31 21:56:42,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 182 transitions. [2024-10-31 21:56:42,250 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 182 transitions. Word has length 59 [2024-10-31 21:56:42,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:42,251 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 182 transitions. [2024-10-31 21:56:42,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 21:56:42,252 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 182 transitions. [2024-10-31 21:56:42,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-31 21:56:42,254 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:42,254 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:42,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 21:56:42,255 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:42,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:42,256 INFO L85 PathProgramCache]: Analyzing trace with hash 743929207, now seen corresponding path program 1 times [2024-10-31 21:56:42,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:42,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236221973] [2024-10-31 21:56:42,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:42,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:42,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:56:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:42,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-31 21:56:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:42,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 21:56:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:42,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-31 21:56:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:42,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-31 21:56:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:42,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:42,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:42,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236221973] [2024-10-31 21:56:42,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236221973] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:42,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:42,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:56:42,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585470212] [2024-10-31 21:56:42,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:42,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:56:42,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:42,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:56:42,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:56:42,666 INFO L87 Difference]: Start difference. First operand 128 states and 182 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 21:56:43,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:43,254 INFO L93 Difference]: Finished difference Result 395 states and 569 transitions. [2024-10-31 21:56:43,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:56:43,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2024-10-31 21:56:43,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:43,259 INFO L225 Difference]: With dead ends: 395 [2024-10-31 21:56:43,259 INFO L226 Difference]: Without dead ends: 278 [2024-10-31 21:56:43,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:56:43,262 INFO L432 NwaCegarLoop]: 349 mSDtfsCounter, 389 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:43,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 818 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-31 21:56:43,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-10-31 21:56:43,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 236. [2024-10-31 21:56:43,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 194 states have (on average 1.4381443298969072) internal successors, (279), 198 states have internal predecessors, (279), 29 states have call successors, (29), 13 states have call predecessors, (29), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-10-31 21:56:43,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 334 transitions. [2024-10-31 21:56:43,307 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 334 transitions. Word has length 59 [2024-10-31 21:56:43,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:43,308 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 334 transitions. [2024-10-31 21:56:43,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 21:56:43,308 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 334 transitions. [2024-10-31 21:56:43,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-31 21:56:43,310 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:43,310 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:43,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 21:56:43,311 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:43,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:43,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1652507784, now seen corresponding path program 1 times [2024-10-31 21:56:43,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:43,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833677689] [2024-10-31 21:56:43,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:43,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:43,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:56:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:43,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-31 21:56:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:43,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 21:56:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:43,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-31 21:56:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:43,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-31 21:56:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:43,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:43,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:43,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833677689] [2024-10-31 21:56:43,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833677689] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:43,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:43,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 21:56:43,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329444853] [2024-10-31 21:56:43,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:43,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:56:43,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:43,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:56:43,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:56:43,568 INFO L87 Difference]: Start difference. First operand 236 states and 334 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 21:56:43,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:43,910 INFO L93 Difference]: Finished difference Result 493 states and 710 transitions. [2024-10-31 21:56:43,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:56:43,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2024-10-31 21:56:43,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:43,913 INFO L225 Difference]: With dead ends: 493 [2024-10-31 21:56:43,914 INFO L226 Difference]: Without dead ends: 268 [2024-10-31 21:56:43,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:56:43,918 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 55 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:43,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 773 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 21:56:43,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-10-31 21:56:43,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 239. [2024-10-31 21:56:43,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 197 states have (on average 1.4263959390862944) internal successors, (281), 201 states have internal predecessors, (281), 29 states have call successors, (29), 13 states have call predecessors, (29), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-10-31 21:56:43,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 336 transitions. [2024-10-31 21:56:43,972 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 336 transitions. Word has length 59 [2024-10-31 21:56:43,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:43,974 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 336 transitions. [2024-10-31 21:56:43,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 21:56:43,975 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 336 transitions. [2024-10-31 21:56:43,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-31 21:56:43,977 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:43,977 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:43,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 21:56:43,977 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:43,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:43,978 INFO L85 PathProgramCache]: Analyzing trace with hash 797092346, now seen corresponding path program 1 times [2024-10-31 21:56:43,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:43,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559833454] [2024-10-31 21:56:43,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:43,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:44,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:56:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:44,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-31 21:56:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:44,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 21:56:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:44,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-31 21:56:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:44,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-31 21:56:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:44,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:44,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:44,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559833454] [2024-10-31 21:56:44,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559833454] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:44,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:44,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 21:56:44,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961864283] [2024-10-31 21:56:44,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:44,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:56:44,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:44,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:56:44,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:56:44,163 INFO L87 Difference]: Start difference. First operand 239 states and 336 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 21:56:44,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:44,508 INFO L93 Difference]: Finished difference Result 505 states and 722 transitions. [2024-10-31 21:56:44,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:56:44,509 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2024-10-31 21:56:44,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:44,514 INFO L225 Difference]: With dead ends: 505 [2024-10-31 21:56:44,517 INFO L226 Difference]: Without dead ends: 277 [2024-10-31 21:56:44,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:56:44,519 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 55 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:44,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 714 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 21:56:44,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-10-31 21:56:44,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 245. [2024-10-31 21:56:44,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 203 states have (on average 1.4137931034482758) internal successors, (287), 207 states have internal predecessors, (287), 29 states have call successors, (29), 13 states have call predecessors, (29), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-10-31 21:56:44,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 342 transitions. [2024-10-31 21:56:44,566 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 342 transitions. Word has length 59 [2024-10-31 21:56:44,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:44,568 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 342 transitions. [2024-10-31 21:56:44,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 21:56:44,569 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 342 transitions. [2024-10-31 21:56:44,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-31 21:56:44,572 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:44,573 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:44,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 21:56:44,573 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:44,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:44,574 INFO L85 PathProgramCache]: Analyzing trace with hash 724705788, now seen corresponding path program 1 times [2024-10-31 21:56:44,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:44,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272670920] [2024-10-31 21:56:44,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:44,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:44,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:56:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:44,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-31 21:56:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:44,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 21:56:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:44,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-31 21:56:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:44,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-31 21:56:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:44,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:44,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272670920] [2024-10-31 21:56:44,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272670920] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:44,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:44,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 21:56:44,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236199100] [2024-10-31 21:56:44,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:44,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:56:44,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:44,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:56:44,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:56:44,849 INFO L87 Difference]: Start difference. First operand 245 states and 342 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 21:56:45,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:45,750 INFO L93 Difference]: Finished difference Result 1013 states and 1453 transitions. [2024-10-31 21:56:45,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:56:45,751 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2024-10-31 21:56:45,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:45,758 INFO L225 Difference]: With dead ends: 1013 [2024-10-31 21:56:45,758 INFO L226 Difference]: Without dead ends: 779 [2024-10-31 21:56:45,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:56:45,762 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 762 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:45,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 964 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-31 21:56:45,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2024-10-31 21:56:45,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 459. [2024-10-31 21:56:45,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 383 states have (on average 1.4046997389033942) internal successors, (538), 389 states have internal predecessors, (538), 51 states have call successors, (51), 25 states have call predecessors, (51), 24 states have return successors, (51), 45 states have call predecessors, (51), 48 states have call successors, (51) [2024-10-31 21:56:45,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 640 transitions. [2024-10-31 21:56:45,858 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 640 transitions. Word has length 59 [2024-10-31 21:56:45,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:45,859 INFO L471 AbstractCegarLoop]: Abstraction has 459 states and 640 transitions. [2024-10-31 21:56:45,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 21:56:45,860 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 640 transitions. [2024-10-31 21:56:45,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-31 21:56:45,862 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:45,862 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:45,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 21:56:45,863 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:45,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:45,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1658073077, now seen corresponding path program 1 times [2024-10-31 21:56:45,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:45,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844247027] [2024-10-31 21:56:45,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:45,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:45,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:56:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:45,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-31 21:56:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:45,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 21:56:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:45,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 21:56:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:45,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-31 21:56:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:45,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:45,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:45,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844247027] [2024-10-31 21:56:45,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844247027] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:45,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:45,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 21:56:45,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066442472] [2024-10-31 21:56:45,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:45,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:56:45,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:45,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:56:45,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:56:45,995 INFO L87 Difference]: Start difference. First operand 459 states and 640 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 21:56:46,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:46,304 INFO L93 Difference]: Finished difference Result 984 states and 1398 transitions. [2024-10-31 21:56:46,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:56:46,305 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2024-10-31 21:56:46,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:46,311 INFO L225 Difference]: With dead ends: 984 [2024-10-31 21:56:46,312 INFO L226 Difference]: Without dead ends: 536 [2024-10-31 21:56:46,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:56:46,316 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 55 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:46,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 715 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 21:56:46,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2024-10-31 21:56:46,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 471. [2024-10-31 21:56:46,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 395 states have (on average 1.3924050632911393) internal successors, (550), 401 states have internal predecessors, (550), 51 states have call successors, (51), 25 states have call predecessors, (51), 24 states have return successors, (51), 45 states have call predecessors, (51), 48 states have call successors, (51) [2024-10-31 21:56:46,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 652 transitions. [2024-10-31 21:56:46,383 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 652 transitions. Word has length 60 [2024-10-31 21:56:46,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:46,383 INFO L471 AbstractCegarLoop]: Abstraction has 471 states and 652 transitions. [2024-10-31 21:56:46,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 21:56:46,385 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 652 transitions. [2024-10-31 21:56:46,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-31 21:56:46,386 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:46,387 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:46,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 21:56:46,388 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:46,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:46,389 INFO L85 PathProgramCache]: Analyzing trace with hash -713666185, now seen corresponding path program 1 times [2024-10-31 21:56:46,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:46,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897296200] [2024-10-31 21:56:46,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:46,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:46,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:56:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:46,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-31 21:56:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:46,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 21:56:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:46,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 21:56:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:46,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-31 21:56:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:46,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:46,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:46,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897296200] [2024-10-31 21:56:46,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897296200] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:46,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:46,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 21:56:46,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105329772] [2024-10-31 21:56:46,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:46,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:56:46,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:46,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:56:46,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:56:46,525 INFO L87 Difference]: Start difference. First operand 471 states and 652 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-31 21:56:46,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:46,953 INFO L93 Difference]: Finished difference Result 1476 states and 2054 transitions. [2024-10-31 21:56:46,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 21:56:46,954 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 60 [2024-10-31 21:56:46,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:46,964 INFO L225 Difference]: With dead ends: 1476 [2024-10-31 21:56:46,965 INFO L226 Difference]: Without dead ends: 1017 [2024-10-31 21:56:46,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:56:46,968 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 248 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:46,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 773 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 21:56:46,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2024-10-31 21:56:47,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 879. [2024-10-31 21:56:47,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 739 states have (on average 1.3843031123139378) internal successors, (1023), 753 states have internal predecessors, (1023), 91 states have call successors, (91), 49 states have call predecessors, (91), 48 states have return successors, (93), 77 states have call predecessors, (93), 88 states have call successors, (93) [2024-10-31 21:56:47,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1207 transitions. [2024-10-31 21:56:47,069 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1207 transitions. Word has length 60 [2024-10-31 21:56:47,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:47,069 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1207 transitions. [2024-10-31 21:56:47,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-10-31 21:56:47,070 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1207 transitions. [2024-10-31 21:56:47,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-31 21:56:47,071 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:47,071 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:47,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 21:56:47,072 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:47,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:47,072 INFO L85 PathProgramCache]: Analyzing trace with hash 196410881, now seen corresponding path program 1 times [2024-10-31 21:56:47,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:47,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918272922] [2024-10-31 21:56:47,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:47,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:47,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:56:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:47,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-31 21:56:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:47,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 21:56:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:47,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 21:56:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:47,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-31 21:56:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:47,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-31 21:56:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:47,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:47,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:47,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918272922] [2024-10-31 21:56:47,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918272922] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:56:47,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100460727] [2024-10-31 21:56:47,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:47,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:47,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:47,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:56:47,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 21:56:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:47,341 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 21:56:47,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:56:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:47,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:56:47,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:47,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100460727] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-31 21:56:47,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-31 21:56:47,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 6] total 8 [2024-10-31 21:56:47,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327763548] [2024-10-31 21:56:47,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:47,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:56:47,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:47,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:56:47,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-31 21:56:47,653 INFO L87 Difference]: Start difference. First operand 879 states and 1207 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-31 21:56:48,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:48,010 INFO L93 Difference]: Finished difference Result 2425 states and 3348 transitions. [2024-10-31 21:56:48,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:56:48,011 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 71 [2024-10-31 21:56:48,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:48,020 INFO L225 Difference]: With dead ends: 2425 [2024-10-31 21:56:48,020 INFO L226 Difference]: Without dead ends: 1657 [2024-10-31 21:56:48,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-31 21:56:48,024 INFO L432 NwaCegarLoop]: 319 mSDtfsCounter, 289 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:48,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 1264 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 21:56:48,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2024-10-31 21:56:48,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1642. [2024-10-31 21:56:48,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1386 states have (on average 1.3816738816738816) internal successors, (1915), 1409 states have internal predecessors, (1915), 165 states have call successors, (165), 91 states have call predecessors, (165), 90 states have return successors, (172), 142 states have call predecessors, (172), 162 states have call successors, (172) [2024-10-31 21:56:48,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2252 transitions. [2024-10-31 21:56:48,261 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2252 transitions. Word has length 71 [2024-10-31 21:56:48,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:48,262 INFO L471 AbstractCegarLoop]: Abstraction has 1642 states and 2252 transitions. [2024-10-31 21:56:48,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-31 21:56:48,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2252 transitions. [2024-10-31 21:56:48,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-31 21:56:48,264 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:48,264 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:48,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 21:56:48,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-31 21:56:48,468 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:48,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:48,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1792983441, now seen corresponding path program 1 times [2024-10-31 21:56:48,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:48,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777989656] [2024-10-31 21:56:48,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:48,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:48,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:56:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:48,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-31 21:56:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:48,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 21:56:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:48,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 21:56:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:48,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-31 21:56:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:48,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-31 21:56:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:48,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:48,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:48,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777989656] [2024-10-31 21:56:48,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777989656] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:48,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:48,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 21:56:48,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674935257] [2024-10-31 21:56:48,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:48,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:56:48,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:48,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:56:48,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:56:48,616 INFO L87 Difference]: Start difference. First operand 1642 states and 2252 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-31 21:56:49,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:49,663 INFO L93 Difference]: Finished difference Result 5206 states and 7235 transitions. [2024-10-31 21:56:49,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 21:56:49,664 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 73 [2024-10-31 21:56:49,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:49,685 INFO L225 Difference]: With dead ends: 5206 [2024-10-31 21:56:49,687 INFO L226 Difference]: Without dead ends: 3576 [2024-10-31 21:56:49,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-10-31 21:56:49,696 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 427 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:49,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 565 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-31 21:56:49,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3576 states. [2024-10-31 21:56:50,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3576 to 3256. [2024-10-31 21:56:50,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3256 states, 2779 states have (on average 1.3609211946743434) internal successors, (3782), 2820 states have internal predecessors, (3782), 292 states have call successors, (292), 170 states have call predecessors, (292), 184 states have return successors, (401), 267 states have call predecessors, (401), 289 states have call successors, (401) [2024-10-31 21:56:50,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3256 states to 3256 states and 4475 transitions. [2024-10-31 21:56:50,033 INFO L78 Accepts]: Start accepts. Automaton has 3256 states and 4475 transitions. Word has length 73 [2024-10-31 21:56:50,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:50,034 INFO L471 AbstractCegarLoop]: Abstraction has 3256 states and 4475 transitions. [2024-10-31 21:56:50,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-31 21:56:50,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3256 states and 4475 transitions. [2024-10-31 21:56:50,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-31 21:56:50,036 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:50,036 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:50,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 21:56:50,037 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:50,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:50,037 INFO L85 PathProgramCache]: Analyzing trace with hash 815804017, now seen corresponding path program 1 times [2024-10-31 21:56:50,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:50,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831319234] [2024-10-31 21:56:50,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:50,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:50,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:56:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:50,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-31 21:56:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:50,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 21:56:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:50,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 21:56:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:50,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-31 21:56:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:50,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-31 21:56:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:50,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:50,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:50,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831319234] [2024-10-31 21:56:50,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831319234] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:50,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:50,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:56:50,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131785126] [2024-10-31 21:56:50,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:50,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:56:50,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:50,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:56:50,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:56:50,103 INFO L87 Difference]: Start difference. First operand 3256 states and 4475 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-31 21:56:50,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:50,739 INFO L93 Difference]: Finished difference Result 6861 states and 9459 transitions. [2024-10-31 21:56:50,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:56:50,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 73 [2024-10-31 21:56:50,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:50,763 INFO L225 Difference]: With dead ends: 6861 [2024-10-31 21:56:50,763 INFO L226 Difference]: Without dead ends: 3616 [2024-10-31 21:56:50,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-31 21:56:50,774 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 306 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:50,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 290 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 21:56:50,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3616 states. [2024-10-31 21:56:51,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3616 to 3251. [2024-10-31 21:56:51,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3251 states, 2777 states have (on average 1.3604609290601368) internal successors, (3778), 2817 states have internal predecessors, (3778), 289 states have call successors, (289), 170 states have call predecessors, (289), 184 states have return successors, (397), 264 states have call predecessors, (397), 286 states have call successors, (397) [2024-10-31 21:56:51,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3251 states to 3251 states and 4464 transitions. [2024-10-31 21:56:51,096 INFO L78 Accepts]: Start accepts. Automaton has 3251 states and 4464 transitions. Word has length 73 [2024-10-31 21:56:51,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:51,097 INFO L471 AbstractCegarLoop]: Abstraction has 3251 states and 4464 transitions. [2024-10-31 21:56:51,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-31 21:56:51,097 INFO L276 IsEmpty]: Start isEmpty. Operand 3251 states and 4464 transitions. [2024-10-31 21:56:51,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-31 21:56:51,099 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:51,099 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:51,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 21:56:51,099 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:51,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:51,100 INFO L85 PathProgramCache]: Analyzing trace with hash 2040025620, now seen corresponding path program 1 times [2024-10-31 21:56:51,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:51,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941696112] [2024-10-31 21:56:51,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:51,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:51,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:56:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:51,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-31 21:56:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:51,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 21:56:51,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:51,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 21:56:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:51,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-31 21:56:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:51,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-31 21:56:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:51,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:51,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:51,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941696112] [2024-10-31 21:56:51,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941696112] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:51,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:51,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:56:51,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247566873] [2024-10-31 21:56:51,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:51,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:56:51,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:51,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:56:51,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:56:51,190 INFO L87 Difference]: Start difference. First operand 3251 states and 4464 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-31 21:56:52,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:52,139 INFO L93 Difference]: Finished difference Result 9419 states and 13042 transitions. [2024-10-31 21:56:52,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 21:56:52,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 74 [2024-10-31 21:56:52,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:52,178 INFO L225 Difference]: With dead ends: 9419 [2024-10-31 21:56:52,179 INFO L226 Difference]: Without dead ends: 6179 [2024-10-31 21:56:52,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:56:52,193 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 377 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:52,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 455 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-31 21:56:52,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6179 states. [2024-10-31 21:56:52,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6179 to 5119. [2024-10-31 21:56:52,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5119 states, 4336 states have (on average 1.3279520295202951) internal successors, (5758), 4400 states have internal predecessors, (5758), 475 states have call successors, (475), 283 states have call predecessors, (475), 307 states have return successors, (665), 436 states have call predecessors, (665), 472 states have call successors, (665) [2024-10-31 21:56:52,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 6898 transitions. [2024-10-31 21:56:52,823 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 6898 transitions. Word has length 74 [2024-10-31 21:56:52,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:52,824 INFO L471 AbstractCegarLoop]: Abstraction has 5119 states and 6898 transitions. [2024-10-31 21:56:52,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-31 21:56:52,825 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 6898 transitions. [2024-10-31 21:56:52,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-31 21:56:52,827 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:52,827 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:52,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 21:56:52,827 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:52,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:52,828 INFO L85 PathProgramCache]: Analyzing trace with hash 71967124, now seen corresponding path program 1 times [2024-10-31 21:56:52,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:52,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895578441] [2024-10-31 21:56:52,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:52,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:52,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:56:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:52,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-31 21:56:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:52,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 21:56:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:53,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 21:56:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:53,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-31 21:56:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:53,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-31 21:56:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:53,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:53,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:53,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895578441] [2024-10-31 21:56:53,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895578441] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:53,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:53,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 21:56:53,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948898879] [2024-10-31 21:56:53,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:53,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 21:56:53,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:53,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 21:56:53,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:56:53,050 INFO L87 Difference]: Start difference. First operand 5119 states and 6898 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-31 21:56:54,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:54,388 INFO L93 Difference]: Finished difference Result 10616 states and 14315 transitions. [2024-10-31 21:56:54,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 21:56:54,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 75 [2024-10-31 21:56:54,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:54,423 INFO L225 Difference]: With dead ends: 10616 [2024-10-31 21:56:54,424 INFO L226 Difference]: Without dead ends: 5685 [2024-10-31 21:56:54,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-10-31 21:56:54,442 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 623 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:54,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 814 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-31 21:56:54,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5685 states. [2024-10-31 21:56:54,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5685 to 5113. [2024-10-31 21:56:54,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 4330 states have (on average 1.325635103926097) internal successors, (5740), 4394 states have internal predecessors, (5740), 475 states have call successors, (475), 283 states have call predecessors, (475), 307 states have return successors, (665), 436 states have call predecessors, (665), 472 states have call successors, (665) [2024-10-31 21:56:54,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 6880 transitions. [2024-10-31 21:56:54,955 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 6880 transitions. Word has length 75 [2024-10-31 21:56:54,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:54,956 INFO L471 AbstractCegarLoop]: Abstraction has 5113 states and 6880 transitions. [2024-10-31 21:56:54,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-31 21:56:54,956 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 6880 transitions. [2024-10-31 21:56:54,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-31 21:56:54,958 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:54,958 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:54,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 21:56:54,959 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:54,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:54,960 INFO L85 PathProgramCache]: Analyzing trace with hash -494723516, now seen corresponding path program 1 times [2024-10-31 21:56:54,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:54,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884980713] [2024-10-31 21:56:54,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:54,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:55,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:56:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:55,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-31 21:56:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:55,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 21:56:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:55,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 21:56:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:55,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-31 21:56:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:55,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-31 21:56:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:55,069 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-31 21:56:55,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:55,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884980713] [2024-10-31 21:56:55,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884980713] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:56:55,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282716720] [2024-10-31 21:56:55,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:55,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:56:55,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:55,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:56:55,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 21:56:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:55,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 21:56:55,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:56:55,256 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:55,256 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 21:56:55,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282716720] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:55,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 21:56:55,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-31 21:56:55,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353274049] [2024-10-31 21:56:55,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:55,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 21:56:55,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:55,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 21:56:55,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:56:55,258 INFO L87 Difference]: Start difference. First operand 5113 states and 6880 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-31 21:56:56,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:56,132 INFO L93 Difference]: Finished difference Result 13830 states and 18772 transitions. [2024-10-31 21:56:56,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 21:56:56,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 79 [2024-10-31 21:56:56,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:56,202 INFO L225 Difference]: With dead ends: 13830 [2024-10-31 21:56:56,206 INFO L226 Difference]: Without dead ends: 8729 [2024-10-31 21:56:56,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:56:56,230 INFO L432 NwaCegarLoop]: 311 mSDtfsCounter, 130 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:56,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 481 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 21:56:56,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8729 states. [2024-10-31 21:56:57,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8729 to 8726. [2024-10-31 21:56:57,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8726 states, 7346 states have (on average 1.3114620201470188) internal successors, (9634), 7457 states have internal predecessors, (9634), 837 states have call successors, (837), 499 states have call predecessors, (837), 542 states have return successors, (1286), 771 states have call predecessors, (1286), 834 states have call successors, (1286) [2024-10-31 21:56:57,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8726 states to 8726 states and 11757 transitions. [2024-10-31 21:56:57,092 INFO L78 Accepts]: Start accepts. Automaton has 8726 states and 11757 transitions. Word has length 79 [2024-10-31 21:56:57,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:57,093 INFO L471 AbstractCegarLoop]: Abstraction has 8726 states and 11757 transitions. [2024-10-31 21:56:57,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-31 21:56:57,094 INFO L276 IsEmpty]: Start isEmpty. Operand 8726 states and 11757 transitions. [2024-10-31 21:56:57,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-31 21:56:57,128 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:57,129 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:56:57,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 21:56:57,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3479804-6dab-4efb-a1e0-5720392db852/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-31 21:56:57,333 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:57,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:57,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1645371471, now seen corresponding path program 1 times [2024-10-31 21:56:57,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:57,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120966373] [2024-10-31 21:56:57,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:57,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:57,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:56:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:57,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-31 21:56:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:57,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 21:56:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:57,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 21:56:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:57,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-31 21:56:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:57,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-31 21:56:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:57,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-31 21:56:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:57,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 21:56:57,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:57,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120966373] [2024-10-31 21:56:57,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120966373] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:57,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:57,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 21:56:57,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445995083] [2024-10-31 21:56:57,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:57,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 21:56:57,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:57,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 21:56:57,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:56:57,536 INFO L87 Difference]: Start difference. First operand 8726 states and 11757 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-31 21:57:00,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:57:00,071 INFO L93 Difference]: Finished difference Result 23071 states and 31268 transitions. [2024-10-31 21:57:00,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-31 21:57:00,072 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 84 [2024-10-31 21:57:00,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:57:00,161 INFO L225 Difference]: With dead ends: 23071 [2024-10-31 21:57:00,162 INFO L226 Difference]: Without dead ends: 15836 [2024-10-31 21:57:00,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-10-31 21:57:00,194 INFO L432 NwaCegarLoop]: 303 mSDtfsCounter, 806 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-31 21:57:00,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 1063 Invalid, 904 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [83 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-31 21:57:00,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15836 states. [2024-10-31 21:57:01,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15836 to 13506. [2024-10-31 21:57:01,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13506 states, 11461 states have (on average 1.3210016577960038) internal successors, (15140), 11643 states have internal predecessors, (15140), 1213 states have call successors, (1213), 725 states have call predecessors, (1213), 831 states have return successors, (2045), 1139 states have call predecessors, (2045), 1210 states have call successors, (2045) [2024-10-31 21:57:01,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13506 states to 13506 states and 18398 transitions. [2024-10-31 21:57:01,850 INFO L78 Accepts]: Start accepts. Automaton has 13506 states and 18398 transitions. Word has length 84 [2024-10-31 21:57:01,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:57:01,850 INFO L471 AbstractCegarLoop]: Abstraction has 13506 states and 18398 transitions. [2024-10-31 21:57:01,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-31 21:57:01,851 INFO L276 IsEmpty]: Start isEmpty. Operand 13506 states and 18398 transitions. [2024-10-31 21:57:01,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-10-31 21:57:01,856 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:57:01,856 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:57:01,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-31 21:57:01,856 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:57:01,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:57:01,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1168082145, now seen corresponding path program 1 times [2024-10-31 21:57:01,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:57:01,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542011371] [2024-10-31 21:57:01,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:57:01,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:57:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:01,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:57:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:02,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-31 21:57:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:02,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 21:57:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:02,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 21:57:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:02,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-31 21:57:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:02,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-31 21:57:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:02,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-31 21:57:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:57:02,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 21:57:02,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:57:02,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542011371] [2024-10-31 21:57:02,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542011371] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:57:02,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:57:02,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 21:57:02,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838996885] [2024-10-31 21:57:02,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:57:02,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 21:57:02,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:57:02,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 21:57:02,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-31 21:57:02,056 INFO L87 Difference]: Start difference. First operand 13506 states and 18398 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-10-31 21:57:05,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:57:05,048 INFO L93 Difference]: Finished difference Result 36656 states and 50063 transitions. [2024-10-31 21:57:05,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-31 21:57:05,049 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 87 [2024-10-31 21:57:05,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:57:05,157 INFO L225 Difference]: With dead ends: 36656 [2024-10-31 21:57:05,158 INFO L226 Difference]: Without dead ends: 24641 [2024-10-31 21:57:05,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-10-31 21:57:05,199 INFO L432 NwaCegarLoop]: 302 mSDtfsCounter, 906 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-31 21:57:05,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 1424 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-31 21:57:05,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24641 states.