./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB --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 46c0d9f9d80db77d4c60fa541a095100d438c0f00ce4cea8ddaeb964f10aa3ad --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:11:53,703 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:11:53,777 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:11:53,783 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:11:53,783 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:11:53,810 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:11:53,810 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:11:53,810 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:11:53,811 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:11:53,811 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:11:53,811 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:11:53,811 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:11:53,812 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:11:53,812 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:11:53,812 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:11:53,812 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:11:53,812 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:11:53,812 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:11:53,812 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:11:53,813 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:11:53,813 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:11:53,813 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:11:53,813 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:11:53,813 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:11:53,813 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:11:53,813 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:11:53,813 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:11:53,814 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:11:53,814 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:11:53,814 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:11:53,814 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:11:53,814 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:11:53,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:11:53,814 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:11:53,815 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:11:53,815 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:11:53,815 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:11:53,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:11:53,815 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:11:53,815 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:11:53,815 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:11:53,815 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:11:53,816 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:11:53,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:11:53,816 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:11:53,816 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:11:53,816 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:11:53,816 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:11:53,816 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 46c0d9f9d80db77d4c60fa541a095100d438c0f00ce4cea8ddaeb964f10aa3ad [2024-11-28 02:11:54,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:11:54,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:11:54,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:11:54,211 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:11:54,211 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:11:54,213 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c [2024-11-28 02:11:57,295 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/data/a1b645227/931b2978e16d495a8ae6bc371cb7040a/FLAG36d3651bb [2024-11-28 02:11:57,863 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:11:57,864 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c [2024-11-28 02:11:57,900 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/data/a1b645227/931b2978e16d495a8ae6bc371cb7040a/FLAG36d3651bb [2024-11-28 02:11:57,922 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/data/a1b645227/931b2978e16d495a8ae6bc371cb7040a [2024-11-28 02:11:57,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:11:57,929 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:11:57,931 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:11:57,931 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:11:57,937 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:11:57,939 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:11:57" (1/1) ... [2024-11-28 02:11:57,940 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57f0420a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:57, skipping insertion in model container [2024-11-28 02:11:57,941 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:11:57" (1/1) ... [2024-11-28 02:11:58,094 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:11:58,400 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c[8616,8629] [2024-11-28 02:11:58,470 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c[15552,15565] [2024-11-28 02:11:59,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:11:59,333 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:11:59,387 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c[8616,8629] [2024-11-28 02:11:59,411 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c[15552,15565] [2024-11-28 02:11:59,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:11:59,994 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:11:59,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:59 WrapperNode [2024-11-28 02:11:59,996 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:11:59,997 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:11:59,997 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:11:59,998 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:12:00,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:59" (1/1) ... [2024-11-28 02:12:00,083 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:59" (1/1) ... [2024-11-28 02:12:00,634 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5037 [2024-11-28 02:12:00,634 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:12:00,687 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:12:00,687 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:12:00,687 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:12:00,704 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:59" (1/1) ... [2024-11-28 02:12:00,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:59" (1/1) ... [2024-11-28 02:12:00,785 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:59" (1/1) ... [2024-11-28 02:12:01,070 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]. [2024-11-28 02:12:01,071 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:59" (1/1) ... [2024-11-28 02:12:01,071 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:59" (1/1) ... [2024-11-28 02:12:01,259 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:59" (1/1) ... [2024-11-28 02:12:01,271 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:59" (1/1) ... [2024-11-28 02:12:01,306 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:59" (1/1) ... [2024-11-28 02:12:01,364 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:59" (1/1) ... [2024-11-28 02:12:01,384 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:59" (1/1) ... [2024-11-28 02:12:01,431 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:12:01,433 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:12:01,433 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:12:01,433 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:12:01,436 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:59" (1/1) ... [2024-11-28 02:12:01,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:12:01,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:12:01,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:12:01,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:12:01,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:12:01,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:12:01,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:12:01,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:12:01,629 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:12:01,631 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:12:07,901 INFO L? ?]: Removed 737 outVars from TransFormulas that were not future-live. [2024-11-28 02:12:07,901 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:12:07,948 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:12:07,949 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 02:12:07,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:12:07 BoogieIcfgContainer [2024-11-28 02:12:07,953 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:12:07,956 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:12:07,956 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:12:07,964 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:12:07,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:11:57" (1/3) ... [2024-11-28 02:12:07,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76caa22e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:12:07, skipping insertion in model container [2024-11-28 02:12:07,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:11:59" (2/3) ... [2024-11-28 02:12:07,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76caa22e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:12:07, skipping insertion in model container [2024-11-28 02:12:07,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:12:07" (3/3) ... [2024-11-28 02:12:07,967 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c [2024-11-28 02:12:07,984 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:12:07,990 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c that has 1 procedures, 886 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-28 02:12:08,086 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:12:08,104 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;@42330499, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:12:08,104 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 02:12:08,115 INFO L276 IsEmpty]: Start isEmpty. Operand has 886 states, 883 states have (on average 1.9048697621744055) internal successors, (1682), 885 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:08,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 02:12:08,123 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:08,124 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:08,125 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:08,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:08,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1782369673, now seen corresponding path program 1 times [2024-11-28 02:12:08,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:08,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777004599] [2024-11-28 02:12:08,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:08,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:08,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:08,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:08,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777004599] [2024-11-28 02:12:08,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777004599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:08,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:08,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:12:08,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187903632] [2024-11-28 02:12:08,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:08,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:12:08,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:08,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:12:08,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:12:08,559 INFO L87 Difference]: Start difference. First operand has 886 states, 883 states have (on average 1.9048697621744055) internal successors, (1682), 885 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:08,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:08,664 INFO L93 Difference]: Finished difference Result 1743 states and 3310 transitions. [2024-11-28 02:12:08,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:12:08,670 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-28 02:12:08,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:08,683 INFO L225 Difference]: With dead ends: 1743 [2024-11-28 02:12:08,683 INFO L226 Difference]: Without dead ends: 820 [2024-11-28 02:12:08,690 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:12:08,693 INFO L435 NwaCegarLoop]: 1616 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:08,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1616 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:12:08,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2024-11-28 02:12:08,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 820. [2024-11-28 02:12:08,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 818 states have (on average 1.8936430317848412) internal successors, (1549), 819 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:08,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1549 transitions. [2024-11-28 02:12:08,794 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1549 transitions. Word has length 23 [2024-11-28 02:12:08,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:08,794 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1549 transitions. [2024-11-28 02:12:08,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:08,795 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1549 transitions. [2024-11-28 02:12:08,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 02:12:08,796 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:08,796 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:08,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:12:08,797 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:08,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:08,797 INFO L85 PathProgramCache]: Analyzing trace with hash 194021771, now seen corresponding path program 1 times [2024-11-28 02:12:08,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:08,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708539987] [2024-11-28 02:12:08,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:08,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:09,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:09,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:09,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708539987] [2024-11-28 02:12:09,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708539987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:09,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:09,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:12:09,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247831821] [2024-11-28 02:12:09,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:09,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:12:09,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:09,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:12:09,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:12:09,104 INFO L87 Difference]: Start difference. First operand 820 states and 1549 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:09,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:09,263 INFO L93 Difference]: Finished difference Result 898 states and 1669 transitions. [2024-11-28 02:12:09,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:12:09,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-28 02:12:09,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:09,270 INFO L225 Difference]: With dead ends: 898 [2024-11-28 02:12:09,270 INFO L226 Difference]: Without dead ends: 857 [2024-11-28 02:12:09,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:12:09,274 INFO L435 NwaCegarLoop]: 1545 mSDtfsCounter, 57 mSDsluCounter, 4606 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 6151 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:09,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 6151 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:12:09,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2024-11-28 02:12:09,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 820. [2024-11-28 02:12:09,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 818 states have (on average 1.8655256723716382) internal successors, (1526), 819 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:09,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1526 transitions. [2024-11-28 02:12:09,313 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1526 transitions. Word has length 23 [2024-11-28 02:12:09,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:09,313 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1526 transitions. [2024-11-28 02:12:09,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:09,314 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1526 transitions. [2024-11-28 02:12:09,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-28 02:12:09,316 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:09,316 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:09,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:12:09,317 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:09,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:09,321 INFO L85 PathProgramCache]: Analyzing trace with hash 651515760, now seen corresponding path program 1 times [2024-11-28 02:12:09,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:09,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309543039] [2024-11-28 02:12:09,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:09,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:09,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:09,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:09,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309543039] [2024-11-28 02:12:09,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309543039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:09,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:09,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:12:09,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930542386] [2024-11-28 02:12:09,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:09,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:12:09,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:09,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:12:09,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:12:09,661 INFO L87 Difference]: Start difference. First operand 820 states and 1526 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:09,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:09,956 INFO L93 Difference]: Finished difference Result 1116 states and 1990 transitions. [2024-11-28 02:12:09,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:12:09,957 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-28 02:12:09,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:09,962 INFO L225 Difference]: With dead ends: 1116 [2024-11-28 02:12:09,964 INFO L226 Difference]: Without dead ends: 1079 [2024-11-28 02:12:09,965 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:12:09,967 INFO L435 NwaCegarLoop]: 1522 mSDtfsCounter, 6223 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6223 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:09,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6223 Valid, 2326 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:12:09,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2024-11-28 02:12:09,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 855. [2024-11-28 02:12:10,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 853 states have (on average 1.8534583821805393) internal successors, (1581), 854 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:10,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1581 transitions. [2024-11-28 02:12:10,007 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1581 transitions. Word has length 45 [2024-11-28 02:12:10,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:10,008 INFO L471 AbstractCegarLoop]: Abstraction has 855 states and 1581 transitions. [2024-11-28 02:12:10,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:10,009 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1581 transitions. [2024-11-28 02:12:10,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 02:12:10,014 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:10,014 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:10,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:12:10,015 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:10,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:10,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1920688320, now seen corresponding path program 1 times [2024-11-28 02:12:10,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:10,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549225080] [2024-11-28 02:12:10,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:10,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:10,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:10,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:10,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549225080] [2024-11-28 02:12:10,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549225080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:10,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:10,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:12:10,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414456189] [2024-11-28 02:12:10,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:10,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:12:10,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:10,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:12:10,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:12:10,134 INFO L87 Difference]: Start difference. First operand 855 states and 1581 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:10,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:10,186 INFO L93 Difference]: Finished difference Result 988 states and 1788 transitions. [2024-11-28 02:12:10,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:12:10,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-28 02:12:10,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:10,192 INFO L225 Difference]: With dead ends: 988 [2024-11-28 02:12:10,192 INFO L226 Difference]: Without dead ends: 916 [2024-11-28 02:12:10,193 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:12:10,194 INFO L435 NwaCegarLoop]: 1524 mSDtfsCounter, 1474 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:10,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1577 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:12:10,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-11-28 02:12:10,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 914. [2024-11-28 02:12:10,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 912 states have (on average 1.832236842105263) internal successors, (1671), 913 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:10,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1671 transitions. [2024-11-28 02:12:10,234 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1671 transitions. Word has length 47 [2024-11-28 02:12:10,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:10,235 INFO L471 AbstractCegarLoop]: Abstraction has 914 states and 1671 transitions. [2024-11-28 02:12:10,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:10,235 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1671 transitions. [2024-11-28 02:12:10,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 02:12:10,238 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:10,240 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:10,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:12:10,240 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:10,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:10,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1987181832, now seen corresponding path program 1 times [2024-11-28 02:12:10,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:10,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981274934] [2024-11-28 02:12:10,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:10,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:10,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:10,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:10,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981274934] [2024-11-28 02:12:10,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981274934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:10,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:10,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:12:10,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620640388] [2024-11-28 02:12:10,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:10,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:12:10,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:10,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:12:10,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:12:10,603 INFO L87 Difference]: Start difference. First operand 914 states and 1671 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:10,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:10,784 INFO L93 Difference]: Finished difference Result 1047 states and 1875 transitions. [2024-11-28 02:12:10,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:12:10,785 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-28 02:12:10,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:10,791 INFO L225 Difference]: With dead ends: 1047 [2024-11-28 02:12:10,791 INFO L226 Difference]: Without dead ends: 916 [2024-11-28 02:12:10,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:12:10,794 INFO L435 NwaCegarLoop]: 1520 mSDtfsCounter, 5924 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5924 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:10,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5924 Valid, 1682 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:12:10,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-11-28 02:12:10,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 914. [2024-11-28 02:12:10,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 912 states have (on average 1.8300438596491229) internal successors, (1669), 913 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:10,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1669 transitions. [2024-11-28 02:12:10,825 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1669 transitions. Word has length 47 [2024-11-28 02:12:10,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:10,826 INFO L471 AbstractCegarLoop]: Abstraction has 914 states and 1669 transitions. [2024-11-28 02:12:10,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:10,826 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1669 transitions. [2024-11-28 02:12:10,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 02:12:10,827 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:10,827 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:10,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:12:10,827 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:10,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:10,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1058371496, now seen corresponding path program 1 times [2024-11-28 02:12:10,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:10,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447824826] [2024-11-28 02:12:10,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:10,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:11,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:11,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:11,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447824826] [2024-11-28 02:12:11,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447824826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:11,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:11,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:12:11,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290799642] [2024-11-28 02:12:11,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:11,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:12:11,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:11,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:12:11,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:12:11,135 INFO L87 Difference]: Start difference. First operand 914 states and 1669 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:11,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:11,194 INFO L93 Difference]: Finished difference Result 922 states and 1678 transitions. [2024-11-28 02:12:11,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:12:11,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-28 02:12:11,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:11,199 INFO L225 Difference]: With dead ends: 922 [2024-11-28 02:12:11,199 INFO L226 Difference]: Without dead ends: 920 [2024-11-28 02:12:11,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:12:11,200 INFO L435 NwaCegarLoop]: 1523 mSDtfsCounter, 0 mSDsluCounter, 4560 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6083 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:11,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6083 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:12:11,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2024-11-28 02:12:11,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 920. [2024-11-28 02:12:11,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 918 states have (on average 1.8235294117647058) internal successors, (1674), 919 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:11,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1674 transitions. [2024-11-28 02:12:11,230 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1674 transitions. Word has length 48 [2024-11-28 02:12:11,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:11,231 INFO L471 AbstractCegarLoop]: Abstraction has 920 states and 1674 transitions. [2024-11-28 02:12:11,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:11,231 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1674 transitions. [2024-11-28 02:12:11,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-28 02:12:11,233 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:11,233 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:11,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:12:11,233 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:11,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:11,234 INFO L85 PathProgramCache]: Analyzing trace with hash -912919064, now seen corresponding path program 1 times [2024-11-28 02:12:11,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:11,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870078915] [2024-11-28 02:12:11,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:11,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:11,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:11,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:11,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870078915] [2024-11-28 02:12:11,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870078915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:11,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:11,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:12:11,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854416209] [2024-11-28 02:12:11,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:11,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:12:11,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:11,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:12:11,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:12:11,335 INFO L87 Difference]: Start difference. First operand 920 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:11,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:11,377 INFO L93 Difference]: Finished difference Result 1071 states and 1900 transitions. [2024-11-28 02:12:11,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:12:11,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-28 02:12:11,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:11,382 INFO L225 Difference]: With dead ends: 1071 [2024-11-28 02:12:11,383 INFO L226 Difference]: Without dead ends: 993 [2024-11-28 02:12:11,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:12:11,385 INFO L435 NwaCegarLoop]: 1568 mSDtfsCounter, 1486 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:11,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1627 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:12:11,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2024-11-28 02:12:11,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 991. [2024-11-28 02:12:11,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 989 states have (on average 1.7977755308392316) internal successors, (1778), 990 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:11,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1778 transitions. [2024-11-28 02:12:11,416 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1778 transitions. Word has length 49 [2024-11-28 02:12:11,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:11,416 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 1778 transitions. [2024-11-28 02:12:11,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:11,416 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1778 transitions. [2024-11-28 02:12:11,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-28 02:12:11,417 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:11,417 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:11,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:12:11,418 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:11,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:11,418 INFO L85 PathProgramCache]: Analyzing trace with hash 325342952, now seen corresponding path program 1 times [2024-11-28 02:12:11,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:11,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141975324] [2024-11-28 02:12:11,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:11,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:11,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:11,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:11,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141975324] [2024-11-28 02:12:11,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141975324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:11,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:11,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:12:11,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057343922] [2024-11-28 02:12:11,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:11,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:12:11,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:11,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:12:11,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:12:11,523 INFO L87 Difference]: Start difference. First operand 991 states and 1778 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:11,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:11,561 INFO L93 Difference]: Finished difference Result 1377 states and 2350 transitions. [2024-11-28 02:12:11,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:12:11,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-28 02:12:11,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:11,567 INFO L225 Difference]: With dead ends: 1377 [2024-11-28 02:12:11,567 INFO L226 Difference]: Without dead ends: 1172 [2024-11-28 02:12:11,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:12:11,569 INFO L435 NwaCegarLoop]: 1570 mSDtfsCounter, 1484 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:11,569 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1633 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:12:11,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2024-11-28 02:12:11,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1170. [2024-11-28 02:12:11,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1168 states have (on average 1.7431506849315068) internal successors, (2036), 1169 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:11,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 2036 transitions. [2024-11-28 02:12:11,606 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 2036 transitions. Word has length 49 [2024-11-28 02:12:11,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:11,607 INFO L471 AbstractCegarLoop]: Abstraction has 1170 states and 2036 transitions. [2024-11-28 02:12:11,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:11,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 2036 transitions. [2024-11-28 02:12:11,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-28 02:12:11,607 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:11,607 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:11,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:12:11,608 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:11,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:11,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1890125848, now seen corresponding path program 1 times [2024-11-28 02:12:11,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:11,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289216114] [2024-11-28 02:12:11,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:11,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:11,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:11,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:11,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289216114] [2024-11-28 02:12:11,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289216114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:11,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:11,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:12:11,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227163029] [2024-11-28 02:12:11,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:11,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:12:11,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:11,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:12:11,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:12:11,692 INFO L87 Difference]: Start difference. First operand 1170 states and 2036 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:11,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:11,745 INFO L93 Difference]: Finished difference Result 1890 states and 3082 transitions. [2024-11-28 02:12:11,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:12:11,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-28 02:12:11,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:11,752 INFO L225 Difference]: With dead ends: 1890 [2024-11-28 02:12:11,753 INFO L226 Difference]: Without dead ends: 1506 [2024-11-28 02:12:11,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:12:11,756 INFO L435 NwaCegarLoop]: 1568 mSDtfsCounter, 1482 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:11,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1635 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:12:11,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2024-11-28 02:12:11,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1504. [2024-11-28 02:12:11,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1502 states have (on average 1.66711051930759) internal successors, (2504), 1503 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:11,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 2504 transitions. [2024-11-28 02:12:11,802 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 2504 transitions. Word has length 49 [2024-11-28 02:12:11,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:11,802 INFO L471 AbstractCegarLoop]: Abstraction has 1504 states and 2504 transitions. [2024-11-28 02:12:11,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:11,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 2504 transitions. [2024-11-28 02:12:11,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-28 02:12:11,804 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:11,804 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:11,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:12:11,804 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:11,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:11,805 INFO L85 PathProgramCache]: Analyzing trace with hash -109192984, now seen corresponding path program 1 times [2024-11-28 02:12:11,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:11,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034177038] [2024-11-28 02:12:11,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:11,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:11,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:11,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:11,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034177038] [2024-11-28 02:12:11,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034177038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:11,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:11,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:12:11,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766086753] [2024-11-28 02:12:11,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:11,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:12:11,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:11,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:12:11,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:12:11,877 INFO L87 Difference]: Start difference. First operand 1504 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:11,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:11,935 INFO L93 Difference]: Finished difference Result 2844 states and 4402 transitions. [2024-11-28 02:12:11,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:12:11,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-28 02:12:11,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:11,944 INFO L225 Difference]: With dead ends: 2844 [2024-11-28 02:12:11,944 INFO L226 Difference]: Without dead ends: 2126 [2024-11-28 02:12:11,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:12:11,947 INFO L435 NwaCegarLoop]: 1566 mSDtfsCounter, 1480 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:11,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1637 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:12:11,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2024-11-28 02:12:12,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 2124. [2024-11-28 02:12:12,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2124 states, 2122 states have (on average 1.5758718190386427) internal successors, (3344), 2123 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:12,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 3344 transitions. [2024-11-28 02:12:12,022 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 3344 transitions. Word has length 49 [2024-11-28 02:12:12,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:12,022 INFO L471 AbstractCegarLoop]: Abstraction has 2124 states and 3344 transitions. [2024-11-28 02:12:12,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:12,022 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 3344 transitions. [2024-11-28 02:12:12,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-28 02:12:12,023 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:12,023 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:12,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:12:12,024 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:12,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:12,024 INFO L85 PathProgramCache]: Analyzing trace with hash 207374565, now seen corresponding path program 1 times [2024-11-28 02:12:12,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:12,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746372940] [2024-11-28 02:12:12,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:12,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:12,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:12,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:12,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746372940] [2024-11-28 02:12:12,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746372940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:12,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:12,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:12:12,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51607803] [2024-11-28 02:12:12,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:12,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:12:12,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:12,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:12:12,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:12:12,282 INFO L87 Difference]: Start difference. First operand 2124 states and 3344 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:20,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:20,473 INFO L93 Difference]: Finished difference Result 4379 states and 7653 transitions. [2024-11-28 02:12:20,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:12:20,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-28 02:12:20,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:20,487 INFO L225 Difference]: With dead ends: 4379 [2024-11-28 02:12:20,487 INFO L226 Difference]: Without dead ends: 3626 [2024-11-28 02:12:20,489 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:12:20,489 INFO L435 NwaCegarLoop]: 762 mSDtfsCounter, 2367 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2367 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:20,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2367 Valid, 780 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2024-11-28 02:12:20,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3626 states. [2024-11-28 02:12:20,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3626 to 3626. [2024-11-28 02:12:20,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3624 states have (on average 1.5060706401766004) internal successors, (5458), 3625 states have internal predecessors, (5458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:20,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 5458 transitions. [2024-11-28 02:12:20,586 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 5458 transitions. Word has length 60 [2024-11-28 02:12:20,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:20,586 INFO L471 AbstractCegarLoop]: Abstraction has 3626 states and 5458 transitions. [2024-11-28 02:12:20,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:20,587 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 5458 transitions. [2024-11-28 02:12:20,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 02:12:20,588 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:20,588 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:12:20,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:12:20,589 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:20,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:20,589 INFO L85 PathProgramCache]: Analyzing trace with hash -280922677, now seen corresponding path program 1 times [2024-11-28 02:12:20,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:20,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236424584] [2024-11-28 02:12:20,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:20,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:20,755 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:12:20,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:20,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236424584] [2024-11-28 02:12:20,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236424584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:20,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:20,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:12:20,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542961878] [2024-11-28 02:12:20,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:20,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:12:20,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:20,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:12:20,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:12:20,758 INFO L87 Difference]: Start difference. First operand 3626 states and 5458 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:20,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:20,984 INFO L93 Difference]: Finished difference Result 8900 states and 12831 transitions. [2024-11-28 02:12:20,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:12:20,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-28 02:12:20,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:21,012 INFO L225 Difference]: With dead ends: 8900 [2024-11-28 02:12:21,016 INFO L226 Difference]: Without dead ends: 7938 [2024-11-28 02:12:21,019 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:12:21,020 INFO L435 NwaCegarLoop]: 1579 mSDtfsCounter, 4652 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4652 SdHoareTripleChecker+Valid, 3381 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:21,020 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4652 Valid, 3381 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:12:21,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7938 states. [2024-11-28 02:12:21,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7938 to 4778. [2024-11-28 02:12:21,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4778 states, 4776 states have (on average 1.4761306532663316) internal successors, (7050), 4777 states have internal predecessors, (7050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:21,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4778 states to 4778 states and 7050 transitions. [2024-11-28 02:12:21,345 INFO L78 Accepts]: Start accepts. Automaton has 4778 states and 7050 transitions. Word has length 67 [2024-11-28 02:12:21,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:21,345 INFO L471 AbstractCegarLoop]: Abstraction has 4778 states and 7050 transitions. [2024-11-28 02:12:21,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:21,345 INFO L276 IsEmpty]: Start isEmpty. Operand 4778 states and 7050 transitions. [2024-11-28 02:12:21,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 02:12:21,347 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:21,347 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:12:21,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:12:21,350 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:21,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:21,351 INFO L85 PathProgramCache]: Analyzing trace with hash 957339339, now seen corresponding path program 1 times [2024-11-28 02:12:21,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:21,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155193402] [2024-11-28 02:12:21,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:21,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:21,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:21,653 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:12:21,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:21,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155193402] [2024-11-28 02:12:21,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155193402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:21,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:21,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:12:21,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510077202] [2024-11-28 02:12:21,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:21,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:12:21,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:21,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:12:21,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:12:21,657 INFO L87 Difference]: Start difference. First operand 4778 states and 7050 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:21,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:21,925 INFO L93 Difference]: Finished difference Result 10236 states and 14687 transitions. [2024-11-28 02:12:21,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:12:21,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-28 02:12:21,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:21,966 INFO L225 Difference]: With dead ends: 10236 [2024-11-28 02:12:21,966 INFO L226 Difference]: Without dead ends: 8898 [2024-11-28 02:12:21,970 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:12:21,971 INFO L435 NwaCegarLoop]: 1578 mSDtfsCounter, 4652 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4652 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:21,972 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4652 Valid, 3373 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:12:21,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8898 states. [2024-11-28 02:12:22,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8898 to 6594. [2024-11-28 02:12:22,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6594 states, 6592 states have (on average 1.4493325242718447) internal successors, (9554), 6593 states have internal predecessors, (9554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:22,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6594 states to 6594 states and 9554 transitions. [2024-11-28 02:12:22,307 INFO L78 Accepts]: Start accepts. Automaton has 6594 states and 9554 transitions. Word has length 67 [2024-11-28 02:12:22,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:22,311 INFO L471 AbstractCegarLoop]: Abstraction has 6594 states and 9554 transitions. [2024-11-28 02:12:22,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:22,312 INFO L276 IsEmpty]: Start isEmpty. Operand 6594 states and 9554 transitions. [2024-11-28 02:12:22,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 02:12:22,314 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:22,314 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:12:22,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:12:22,318 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:22,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:22,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1258129461, now seen corresponding path program 1 times [2024-11-28 02:12:22,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:22,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83630197] [2024-11-28 02:12:22,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:22,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:22,520 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 02:12:22,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:22,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83630197] [2024-11-28 02:12:22,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83630197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:22,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:22,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:12:22,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699401370] [2024-11-28 02:12:22,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:22,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:12:22,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:22,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:12:22,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:12:22,524 INFO L87 Difference]: Start difference. First operand 6594 states and 9554 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:22,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:22,837 INFO L93 Difference]: Finished difference Result 11572 states and 16535 transitions. [2024-11-28 02:12:22,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:12:22,838 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-28 02:12:22,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:22,865 INFO L225 Difference]: With dead ends: 11572 [2024-11-28 02:12:22,865 INFO L226 Difference]: Without dead ends: 10234 [2024-11-28 02:12:22,870 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:12:22,870 INFO L435 NwaCegarLoop]: 1576 mSDtfsCounter, 4677 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4677 SdHoareTripleChecker+Valid, 3343 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:22,871 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4677 Valid, 3343 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:12:22,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10234 states. [2024-11-28 02:12:23,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10234 to 7930. [2024-11-28 02:12:23,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7930 states, 7928 states have (on average 1.438193743693239) internal successors, (11402), 7929 states have internal predecessors, (11402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:23,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7930 states to 7930 states and 11402 transitions. [2024-11-28 02:12:23,200 INFO L78 Accepts]: Start accepts. Automaton has 7930 states and 11402 transitions. Word has length 67 [2024-11-28 02:12:23,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:23,200 INFO L471 AbstractCegarLoop]: Abstraction has 7930 states and 11402 transitions. [2024-11-28 02:12:23,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:23,200 INFO L276 IsEmpty]: Start isEmpty. Operand 7930 states and 11402 transitions. [2024-11-28 02:12:23,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 02:12:23,202 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:23,202 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:12:23,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:12:23,202 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:23,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:23,204 INFO L85 PathProgramCache]: Analyzing trace with hash 522803403, now seen corresponding path program 1 times [2024-11-28 02:12:23,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:23,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907182623] [2024-11-28 02:12:23,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:23,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:23,356 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 02:12:23,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:23,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907182623] [2024-11-28 02:12:23,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907182623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:23,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:23,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:12:23,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911301383] [2024-11-28 02:12:23,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:23,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:12:23,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:23,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:12:23,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:12:23,359 INFO L87 Difference]: Start difference. First operand 7930 states and 11402 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:23,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:23,676 INFO L93 Difference]: Finished difference Result 12908 states and 18383 transitions. [2024-11-28 02:12:23,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:12:23,677 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-28 02:12:23,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:23,703 INFO L225 Difference]: With dead ends: 12908 [2024-11-28 02:12:23,703 INFO L226 Difference]: Without dead ends: 11570 [2024-11-28 02:12:23,708 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:12:23,709 INFO L435 NwaCegarLoop]: 1575 mSDtfsCounter, 4666 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4666 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:23,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4666 Valid, 3368 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:12:23,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11570 states. [2024-11-28 02:12:24,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11570 to 9266. [2024-11-28 02:12:24,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9266 states, 9264 states have (on average 1.4302677029360966) internal successors, (13250), 9265 states have internal predecessors, (13250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:24,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9266 states to 9266 states and 13250 transitions. [2024-11-28 02:12:24,239 INFO L78 Accepts]: Start accepts. Automaton has 9266 states and 13250 transitions. Word has length 67 [2024-11-28 02:12:24,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:24,239 INFO L471 AbstractCegarLoop]: Abstraction has 9266 states and 13250 transitions. [2024-11-28 02:12:24,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:24,240 INFO L276 IsEmpty]: Start isEmpty. Operand 9266 states and 13250 transitions. [2024-11-28 02:12:24,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 02:12:24,242 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:24,242 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:12:24,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:12:24,247 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:24,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:24,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1681723190, now seen corresponding path program 1 times [2024-11-28 02:12:24,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:24,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708734607] [2024-11-28 02:12:24,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:24,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:24,479 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:24,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:24,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708734607] [2024-11-28 02:12:24,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708734607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:24,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:24,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:12:24,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474675439] [2024-11-28 02:12:24,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:24,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:12:24,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:24,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:12:24,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:12:24,481 INFO L87 Difference]: Start difference. First operand 9266 states and 13250 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:24,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:24,718 INFO L93 Difference]: Finished difference Result 16246 states and 22916 transitions. [2024-11-28 02:12:24,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:12:24,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-28 02:12:24,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:24,738 INFO L225 Difference]: With dead ends: 16246 [2024-11-28 02:12:24,738 INFO L226 Difference]: Without dead ends: 9268 [2024-11-28 02:12:24,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:12:24,747 INFO L435 NwaCegarLoop]: 1553 mSDtfsCounter, 37 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:24,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3067 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:12:24,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9268 states. [2024-11-28 02:12:25,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9268 to 9266. [2024-11-28 02:12:25,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9266 states, 9264 states have (on average 1.4168825561312608) internal successors, (13126), 9265 states have internal predecessors, (13126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:25,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9266 states to 9266 states and 13126 transitions. [2024-11-28 02:12:25,061 INFO L78 Accepts]: Start accepts. Automaton has 9266 states and 13126 transitions. Word has length 68 [2024-11-28 02:12:25,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:25,062 INFO L471 AbstractCegarLoop]: Abstraction has 9266 states and 13126 transitions. [2024-11-28 02:12:25,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:25,062 INFO L276 IsEmpty]: Start isEmpty. Operand 9266 states and 13126 transitions. [2024-11-28 02:12:25,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 02:12:25,063 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:25,063 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:12:25,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 02:12:25,064 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:25,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:25,065 INFO L85 PathProgramCache]: Analyzing trace with hash -469102173, now seen corresponding path program 1 times [2024-11-28 02:12:25,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:25,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511357646] [2024-11-28 02:12:25,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:25,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:25,201 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:25,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:25,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511357646] [2024-11-28 02:12:25,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511357646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:25,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:25,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:12:25,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232277612] [2024-11-28 02:12:25,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:25,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:12:25,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:25,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:12:25,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:12:25,204 INFO L87 Difference]: Start difference. First operand 9266 states and 13126 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:25,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:25,298 INFO L93 Difference]: Finished difference Result 11928 states and 16799 transitions. [2024-11-28 02:12:25,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:12:25,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-28 02:12:25,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:25,310 INFO L225 Difference]: With dead ends: 11928 [2024-11-28 02:12:25,310 INFO L226 Difference]: Without dead ends: 4950 [2024-11-28 02:12:25,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:12:25,318 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 31 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:25,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3064 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:12:25,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4950 states. [2024-11-28 02:12:25,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4950 to 4941. [2024-11-28 02:12:25,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4941 states, 4939 states have (on average 1.4587973273942094) internal successors, (7205), 4940 states have internal predecessors, (7205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4941 states to 4941 states and 7205 transitions. [2024-11-28 02:12:25,441 INFO L78 Accepts]: Start accepts. Automaton has 4941 states and 7205 transitions. Word has length 69 [2024-11-28 02:12:25,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:25,441 INFO L471 AbstractCegarLoop]: Abstraction has 4941 states and 7205 transitions. [2024-11-28 02:12:25,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:25,441 INFO L276 IsEmpty]: Start isEmpty. Operand 4941 states and 7205 transitions. [2024-11-28 02:12:25,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-28 02:12:25,442 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:25,442 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:12:25,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 02:12:25,443 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:25,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:25,443 INFO L85 PathProgramCache]: Analyzing trace with hash 422947784, now seen corresponding path program 1 times [2024-11-28 02:12:25,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:25,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128725575] [2024-11-28 02:12:25,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:25,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:25,579 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:25,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:25,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128725575] [2024-11-28 02:12:25,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128725575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:25,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:25,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:12:25,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964195985] [2024-11-28 02:12:25,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:25,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:12:25,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:25,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:12:25,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:12:25,582 INFO L87 Difference]: Start difference. First operand 4941 states and 7205 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:25,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:25,649 INFO L93 Difference]: Finished difference Result 6265 states and 9011 transitions. [2024-11-28 02:12:25,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:12:25,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-28 02:12:25,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:25,658 INFO L225 Difference]: With dead ends: 6265 [2024-11-28 02:12:25,659 INFO L226 Difference]: Without dead ends: 3623 [2024-11-28 02:12:25,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:12:25,663 INFO L435 NwaCegarLoop]: 1545 mSDtfsCounter, 33 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:25,663 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3043 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:12:25,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2024-11-28 02:12:25,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3621. [2024-11-28 02:12:25,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3621 states, 3619 states have (on average 1.486322188449848) internal successors, (5379), 3620 states have internal predecessors, (5379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:25,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 5379 transitions. [2024-11-28 02:12:25,796 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 5379 transitions. Word has length 70 [2024-11-28 02:12:25,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:25,797 INFO L471 AbstractCegarLoop]: Abstraction has 3621 states and 5379 transitions. [2024-11-28 02:12:25,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:25,797 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 5379 transitions. [2024-11-28 02:12:25,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 02:12:25,798 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:25,799 INFO L218 NwaCegarLoop]: trace histogram [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, 1] [2024-11-28 02:12:25,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 02:12:25,799 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:25,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:25,800 INFO L85 PathProgramCache]: Analyzing trace with hash 975382234, now seen corresponding path program 1 times [2024-11-28 02:12:25,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:25,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970566358] [2024-11-28 02:12:25,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:25,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:25,930 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:25,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:25,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970566358] [2024-11-28 02:12:25,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970566358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:25,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:25,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:12:25,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564959070] [2024-11-28 02:12:25,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:25,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:12:25,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:25,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:12:25,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:12:25,932 INFO L87 Difference]: Start difference. First operand 3621 states and 5379 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:25,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:25,979 INFO L93 Difference]: Finished difference Result 4285 states and 6272 transitions. [2024-11-28 02:12:25,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:12:25,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-28 02:12:25,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:25,987 INFO L225 Difference]: With dead ends: 4285 [2024-11-28 02:12:25,988 INFO L226 Difference]: Without dead ends: 2963 [2024-11-28 02:12:25,990 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:12:25,991 INFO L435 NwaCegarLoop]: 1538 mSDtfsCounter, 30 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:25,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3028 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:12:25,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2024-11-28 02:12:26,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 2961. [2024-11-28 02:12:26,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2961 states, 2959 states have (on average 1.513011152416357) internal successors, (4477), 2960 states have internal predecessors, (4477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:26,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2961 states to 2961 states and 4477 transitions. [2024-11-28 02:12:26,050 INFO L78 Accepts]: Start accepts. Automaton has 2961 states and 4477 transitions. Word has length 72 [2024-11-28 02:12:26,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:26,050 INFO L471 AbstractCegarLoop]: Abstraction has 2961 states and 4477 transitions. [2024-11-28 02:12:26,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:26,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2961 states and 4477 transitions. [2024-11-28 02:12:26,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 02:12:26,052 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:26,052 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2024-11-28 02:12:26,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 02:12:26,052 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:26,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:26,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1652203628, now seen corresponding path program 1 times [2024-11-28 02:12:26,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:26,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447764029] [2024-11-28 02:12:26,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:26,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:28,269 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:28,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:28,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447764029] [2024-11-28 02:12:28,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447764029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:12:28,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69504116] [2024-11-28 02:12:28,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:28,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:12:28,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:12:28,275 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:12:28,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:12:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:28,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 02:12:28,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:12:28,846 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:28,847 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:12:29,621 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:29,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69504116] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:12:29,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:12:29,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 6] total 22 [2024-11-28 02:12:29,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523825772] [2024-11-28 02:12:29,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:12:29,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 02:12:29,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:29,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 02:12:29,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2024-11-28 02:12:29,624 INFO L87 Difference]: Start difference. First operand 2961 states and 4477 transitions. Second operand has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:36,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:36,606 INFO L93 Difference]: Finished difference Result 8877 states and 12153 transitions. [2024-11-28 02:12:36,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-28 02:12:36,607 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-28 02:12:36,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:36,623 INFO L225 Difference]: With dead ends: 8877 [2024-11-28 02:12:36,624 INFO L226 Difference]: Without dead ends: 8141 [2024-11-28 02:12:36,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4084 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1738, Invalid=9392, Unknown=0, NotChecked=0, Total=11130 [2024-11-28 02:12:36,629 INFO L435 NwaCegarLoop]: 1515 mSDtfsCounter, 16760 mSDsluCounter, 7984 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16760 SdHoareTripleChecker+Valid, 9499 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:36,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16760 Valid, 9499 Invalid, 1813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 02:12:36,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8141 states. [2024-11-28 02:12:36,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8141 to 7403. [2024-11-28 02:12:36,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7403 states, 7401 states have (on average 1.3719767598973112) internal successors, (10154), 7402 states have internal predecessors, (10154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:36,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7403 states to 7403 states and 10154 transitions. [2024-11-28 02:12:36,845 INFO L78 Accepts]: Start accepts. Automaton has 7403 states and 10154 transitions. Word has length 74 [2024-11-28 02:12:36,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:36,845 INFO L471 AbstractCegarLoop]: Abstraction has 7403 states and 10154 transitions. [2024-11-28 02:12:36,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:36,846 INFO L276 IsEmpty]: Start isEmpty. Operand 7403 states and 10154 transitions. [2024-11-28 02:12:36,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 02:12:36,848 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:36,848 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2024-11-28 02:12:36,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:12:37,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-28 02:12:37,049 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:37,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:37,050 INFO L85 PathProgramCache]: Analyzing trace with hash 619603757, now seen corresponding path program 1 times [2024-11-28 02:12:37,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:37,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045983673] [2024-11-28 02:12:37,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:37,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:39,022 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:39,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:39,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045983673] [2024-11-28 02:12:39,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045983673] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:12:39,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57720990] [2024-11-28 02:12:39,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:39,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:12:39,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:12:39,027 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:12:39,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:12:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:39,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 02:12:39,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:12:39,635 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:39,635 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:12:40,700 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:40,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57720990] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:12:40,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:12:40,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2024-11-28 02:12:40,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247332683] [2024-11-28 02:12:40,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:12:40,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 02:12:40,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:40,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 02:12:40,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2024-11-28 02:12:40,703 INFO L87 Difference]: Start difference. First operand 7403 states and 10154 transitions. Second operand has 29 states, 29 states have (on average 6.655172413793103) internal successors, (193), 28 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:42,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:42,431 INFO L93 Difference]: Finished difference Result 27503 states and 36118 transitions. [2024-11-28 02:12:42,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-28 02:12:42,432 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.655172413793103) internal successors, (193), 28 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-28 02:12:42,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:42,459 INFO L225 Difference]: With dead ends: 27503 [2024-11-28 02:12:42,459 INFO L226 Difference]: Without dead ends: 22465 [2024-11-28 02:12:42,467 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=615, Invalid=2465, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 02:12:42,468 INFO L435 NwaCegarLoop]: 1501 mSDtfsCounter, 15879 mSDsluCounter, 6528 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15879 SdHoareTripleChecker+Valid, 8029 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:42,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15879 Valid, 8029 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:12:42,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22465 states. [2024-11-28 02:12:43,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22465 to 22453. [2024-11-28 02:12:43,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22453 states, 22451 states have (on average 1.3079595563671997) internal successors, (29365), 22452 states have internal predecessors, (29365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:43,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22453 states to 22453 states and 29365 transitions. [2024-11-28 02:12:43,292 INFO L78 Accepts]: Start accepts. Automaton has 22453 states and 29365 transitions. Word has length 75 [2024-11-28 02:12:43,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:43,293 INFO L471 AbstractCegarLoop]: Abstraction has 22453 states and 29365 transitions. [2024-11-28 02:12:43,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.655172413793103) internal successors, (193), 28 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:43,293 INFO L276 IsEmpty]: Start isEmpty. Operand 22453 states and 29365 transitions. [2024-11-28 02:12:43,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 02:12:43,295 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:43,295 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2024-11-28 02:12:43,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:12:43,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 02:12:43,499 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:43,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:43,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2069741267, now seen corresponding path program 1 times [2024-11-28 02:12:43,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:43,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672526332] [2024-11-28 02:12:43,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:43,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:45,760 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:45,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:45,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672526332] [2024-11-28 02:12:45,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672526332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:12:45,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463505636] [2024-11-28 02:12:45,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:45,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:12:45,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:12:45,763 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:12:45,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:12:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:45,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:12:45,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:12:46,363 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:46,363 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:12:47,195 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:47,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463505636] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:12:47,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:12:47,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-11-28 02:12:47,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210964393] [2024-11-28 02:12:47,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:12:47,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 02:12:47,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:47,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 02:12:47,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2024-11-28 02:12:47,198 INFO L87 Difference]: Start difference. First operand 22453 states and 29365 transitions. Second operand has 28 states, 28 states have (on average 7.035714285714286) internal successors, (197), 27 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:51,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:51,668 INFO L93 Difference]: Finished difference Result 71869 states and 93705 transitions. [2024-11-28 02:12:51,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-28 02:12:51,669 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.035714285714286) internal successors, (197), 27 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-28 02:12:51,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:51,736 INFO L225 Difference]: With dead ends: 71869 [2024-11-28 02:12:51,736 INFO L226 Difference]: Without dead ends: 52533 [2024-11-28 02:12:51,755 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1064 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=845, Invalid=3577, Unknown=0, NotChecked=0, Total=4422 [2024-11-28 02:12:51,757 INFO L435 NwaCegarLoop]: 1500 mSDtfsCounter, 18899 mSDsluCounter, 9351 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18899 SdHoareTripleChecker+Valid, 10851 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:51,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18899 Valid, 10851 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:12:51,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52533 states. [2024-11-28 02:12:53,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52533 to 44769. [2024-11-28 02:12:53,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44769 states, 44767 states have (on average 1.276185583130431) internal successors, (57131), 44768 states have internal predecessors, (57131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:53,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44769 states to 44769 states and 57131 transitions. [2024-11-28 02:12:53,491 INFO L78 Accepts]: Start accepts. Automaton has 44769 states and 57131 transitions. Word has length 75 [2024-11-28 02:12:53,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:53,492 INFO L471 AbstractCegarLoop]: Abstraction has 44769 states and 57131 transitions. [2024-11-28 02:12:53,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.035714285714286) internal successors, (197), 27 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:12:53,492 INFO L276 IsEmpty]: Start isEmpty. Operand 44769 states and 57131 transitions. [2024-11-28 02:12:53,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 02:12:53,494 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:53,494 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:53,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:12:53,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 02:12:53,695 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:53,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:53,695 INFO L85 PathProgramCache]: Analyzing trace with hash -2128735329, now seen corresponding path program 1 times [2024-11-28 02:12:53,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:53,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615960529] [2024-11-28 02:12:53,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:53,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:54,188 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:54,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:54,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615960529] [2024-11-28 02:12:54,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615960529] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:12:54,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507895768] [2024-11-28 02:12:54,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:54,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:12:54,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:12:54,191 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:12:54,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:12:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:54,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 02:12:54,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:12:55,876 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:55,876 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:12:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:57,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507895768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:12:57,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:12:57,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 12] total 32 [2024-11-28 02:12:57,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578675337] [2024-11-28 02:12:57,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:12:57,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 02:12:57,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:57,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 02:12:57,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2024-11-28 02:12:57,372 INFO L87 Difference]: Start difference. First operand 44769 states and 57131 transitions. Second operand has 32 states, 32 states have (on average 6.40625) internal successors, (205), 32 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:13:05,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:05,761 INFO L93 Difference]: Finished difference Result 125257 states and 159191 transitions. [2024-11-28 02:13:05,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-28 02:13:05,761 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.40625) internal successors, (205), 32 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-28 02:13:05,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:05,855 INFO L225 Difference]: With dead ends: 125257 [2024-11-28 02:13:05,855 INFO L226 Difference]: Without dead ends: 83331 [2024-11-28 02:13:05,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2038 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1461, Invalid=5849, Unknown=0, NotChecked=0, Total=7310 [2024-11-28 02:13:05,889 INFO L435 NwaCegarLoop]: 1511 mSDtfsCounter, 22693 mSDsluCounter, 9679 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22693 SdHoareTripleChecker+Valid, 11190 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:05,889 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22693 Valid, 11190 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:13:05,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83331 states. [2024-11-28 02:13:07,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83331 to 47785. [2024-11-28 02:13:07,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47785 states, 47783 states have (on average 1.2608040516501684) internal successors, (60245), 47784 states have internal predecessors, (60245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:13:07,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47785 states to 47785 states and 60245 transitions. [2024-11-28 02:13:07,709 INFO L78 Accepts]: Start accepts. Automaton has 47785 states and 60245 transitions. Word has length 75 [2024-11-28 02:13:07,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:07,709 INFO L471 AbstractCegarLoop]: Abstraction has 47785 states and 60245 transitions. [2024-11-28 02:13:07,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.40625) internal successors, (205), 32 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:13:07,709 INFO L276 IsEmpty]: Start isEmpty. Operand 47785 states and 60245 transitions. [2024-11-28 02:13:07,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 02:13:07,712 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:07,712 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:07,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:13:07,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:13:07,916 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:07,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:07,916 INFO L85 PathProgramCache]: Analyzing trace with hash -830754321, now seen corresponding path program 1 times [2024-11-28 02:13:07,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:07,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863849473] [2024-11-28 02:13:07,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:07,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:08,770 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:08,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:08,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863849473] [2024-11-28 02:13:08,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863849473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:13:08,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282116004] [2024-11-28 02:13:08,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:08,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:13:08,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:13:08,773 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:13:08,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:13:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:08,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 02:13:08,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:13:12,301 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:12,301 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:13:15,628 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:15,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282116004] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:13:15,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:13:15,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 27, 24] total 57 [2024-11-28 02:13:15,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627133175] [2024-11-28 02:13:15,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:13:15,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-28 02:13:15,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:15,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-28 02:13:15,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=538, Invalid=2654, Unknown=0, NotChecked=0, Total=3192 [2024-11-28 02:13:15,631 INFO L87 Difference]: Start difference. First operand 47785 states and 60245 transitions. Second operand has 57 states, 57 states have (on average 3.456140350877193) internal successors, (197), 57 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:13:34,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:34,969 INFO L93 Difference]: Finished difference Result 121107 states and 151415 transitions. [2024-11-28 02:13:34,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-11-28 02:13:34,970 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.456140350877193) internal successors, (197), 57 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-28 02:13:34,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:35,086 INFO L225 Difference]: With dead ends: 121107 [2024-11-28 02:13:35,086 INFO L226 Difference]: Without dead ends: 103433 [2024-11-28 02:13:35,112 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8702 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=4487, Invalid=18465, Unknown=0, NotChecked=0, Total=22952 [2024-11-28 02:13:35,113 INFO L435 NwaCegarLoop]: 1520 mSDtfsCounter, 25856 mSDsluCounter, 22497 mSDsCounter, 0 mSdLazyCounter, 3361 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25856 SdHoareTripleChecker+Valid, 24017 SdHoareTripleChecker+Invalid, 3441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:35,113 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25856 Valid, 24017 Invalid, 3441 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 3361 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-28 02:13:35,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103433 states. [2024-11-28 02:13:38,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103433 to 56263. [2024-11-28 02:13:38,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56263 states, 56261 states have (on average 1.2618865644051829) internal successors, (70995), 56262 states have internal predecessors, (70995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:13:38,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56263 states to 56263 states and 70995 transitions. [2024-11-28 02:13:38,469 INFO L78 Accepts]: Start accepts. Automaton has 56263 states and 70995 transitions. Word has length 77 [2024-11-28 02:13:38,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:38,470 INFO L471 AbstractCegarLoop]: Abstraction has 56263 states and 70995 transitions. [2024-11-28 02:13:38,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.456140350877193) internal successors, (197), 57 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:13:38,470 INFO L276 IsEmpty]: Start isEmpty. Operand 56263 states and 70995 transitions. [2024-11-28 02:13:38,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 02:13:38,471 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:38,472 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:38,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:13:38,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:13:38,676 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:38,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:38,676 INFO L85 PathProgramCache]: Analyzing trace with hash -747594897, now seen corresponding path program 1 times [2024-11-28 02:13:38,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:38,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325136427] [2024-11-28 02:13:38,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:38,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:39,721 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:39,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:39,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325136427] [2024-11-28 02:13:39,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325136427] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:13:39,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465510944] [2024-11-28 02:13:39,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:39,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:13:39,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:13:39,724 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:13:39,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:13:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:39,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 02:13:39,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:13:40,635 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:40,635 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:13:42,377 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:42,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465510944] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:13:42,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:13:42,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-28 02:13:42,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679961233] [2024-11-28 02:13:42,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:13:42,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-28 02:13:42,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:42,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-28 02:13:42,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=775, Unknown=0, NotChecked=0, Total=870 [2024-11-28 02:13:42,380 INFO L87 Difference]: Start difference. First operand 56263 states and 70995 transitions. Second operand has 30 states, 30 states have (on average 6.633333333333334) internal successors, (199), 30 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:13:50,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:50,124 INFO L93 Difference]: Finished difference Result 114967 states and 143295 transitions. [2024-11-28 02:13:50,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-28 02:13:50,125 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.633333333333334) internal successors, (199), 30 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-28 02:13:50,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:50,200 INFO L225 Difference]: With dead ends: 114967 [2024-11-28 02:13:50,201 INFO L226 Difference]: Without dead ends: 83803 [2024-11-28 02:13:50,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1026, Invalid=3666, Unknown=0, NotChecked=0, Total=4692 [2024-11-28 02:13:50,225 INFO L435 NwaCegarLoop]: 1512 mSDtfsCounter, 9980 mSDsluCounter, 25852 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9980 SdHoareTripleChecker+Valid, 27364 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:50,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9980 Valid, 27364 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:13:50,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83803 states. [2024-11-28 02:13:54,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83803 to 74418. [2024-11-28 02:13:54,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74418 states, 74416 states have (on average 1.245444528058482) internal successors, (92681), 74417 states have internal predecessors, (92681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:13:54,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74418 states to 74418 states and 92681 transitions. [2024-11-28 02:13:54,527 INFO L78 Accepts]: Start accepts. Automaton has 74418 states and 92681 transitions. Word has length 77 [2024-11-28 02:13:54,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:54,527 INFO L471 AbstractCegarLoop]: Abstraction has 74418 states and 92681 transitions. [2024-11-28 02:13:54,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.633333333333334) internal successors, (199), 30 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:13:54,527 INFO L276 IsEmpty]: Start isEmpty. Operand 74418 states and 92681 transitions. [2024-11-28 02:13:54,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-28 02:13:54,529 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:54,529 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:54,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:13:54,749 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:54,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:54,749 INFO L85 PathProgramCache]: Analyzing trace with hash 400854277, now seen corresponding path program 1 times [2024-11-28 02:13:54,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:54,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310643715] [2024-11-28 02:13:54,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:54,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:54,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:13:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:55,776 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:55,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:55,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310643715] [2024-11-28 02:13:55,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310643715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:13:55,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021097684] [2024-11-28 02:13:55,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:55,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:13:55,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:13:55,779 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:13:55,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:13:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:55,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 02:13:55,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:13:57,484 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:57,484 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:13:58,527 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:58,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021097684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:13:58,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:13:58,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2024-11-28 02:13:58,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909733718] [2024-11-28 02:13:58,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:13:58,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-28 02:13:58,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:58,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-28 02:13:58,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 02:13:58,529 INFO L87 Difference]: Start difference. First operand 74418 states and 92681 transitions. Second operand has 33 states, 33 states have (on average 5.787878787878788) internal successors, (191), 33 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:14:05,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:05,510 INFO L93 Difference]: Finished difference Result 158477 states and 197426 transitions. [2024-11-28 02:14:05,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 02:14:05,510 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.787878787878788) internal successors, (191), 33 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-28 02:14:05,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:05,642 INFO L225 Difference]: With dead ends: 158477 [2024-11-28 02:14:05,642 INFO L226 Difference]: Without dead ends: 129845 [2024-11-28 02:14:05,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=575, Invalid=2077, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 02:14:05,666 INFO L435 NwaCegarLoop]: 1516 mSDtfsCounter, 11856 mSDsluCounter, 16637 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11856 SdHoareTripleChecker+Valid, 18153 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:05,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11856 Valid, 18153 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:14:05,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129845 states. [2024-11-28 02:14:09,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129845 to 66042. [2024-11-28 02:14:09,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66042 states, 66040 states have (on average 1.2475923682616596) internal successors, (82391), 66041 states have internal predecessors, (82391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:14:09,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66042 states to 66042 states and 82391 transitions. [2024-11-28 02:14:09,666 INFO L78 Accepts]: Start accepts. Automaton has 66042 states and 82391 transitions. Word has length 79 [2024-11-28 02:14:09,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:09,666 INFO L471 AbstractCegarLoop]: Abstraction has 66042 states and 82391 transitions. [2024-11-28 02:14:09,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.787878787878788) internal successors, (191), 33 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:14:09,666 INFO L276 IsEmpty]: Start isEmpty. Operand 66042 states and 82391 transitions. [2024-11-28 02:14:09,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-28 02:14:09,673 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:09,673 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-28 02:14:09,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:14:09,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 02:14:09,878 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:09,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:09,878 INFO L85 PathProgramCache]: Analyzing trace with hash -214204917, now seen corresponding path program 1 times [2024-11-28 02:14:09,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:09,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463690759] [2024-11-28 02:14:09,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:09,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:11,177 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 47 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:14:11,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:11,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463690759] [2024-11-28 02:14:11,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463690759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:14:11,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444833821] [2024-11-28 02:14:11,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:11,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:11,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:14:11,180 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:14:11,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_580894e7-ea00-4c6c-be2d-bf50f823c288/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:14:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:11,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-28 02:14:11,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:14:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 39 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:14:23,283 INFO L312 TraceCheckSpWp]: Computing backward predicates...