./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya --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 4a068220cd9a63125e810935e79eeb0e481ecd288491865590be5286d46acb22 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:23:13,451 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:23:13,519 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:23:13,524 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:23:13,524 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:23:13,546 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:23:13,547 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:23:13,548 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:23:13,548 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:23:13,549 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:23:13,549 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:23:13,550 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:23:13,551 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:23:13,551 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:23:13,552 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:23:13,552 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:23:13,553 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:23:13,553 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:23:13,554 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:23:13,554 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:23:13,555 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:23:13,556 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:23:13,556 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:23:13,557 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:23:13,557 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:23:13,557 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:23:13,558 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:23:13,558 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:23:13,559 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:23:13,559 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:23:13,559 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:23:13,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:23:13,560 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:23:13,560 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:23:13,561 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:23:13,561 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:23:13,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:23:13,561 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:23:13,561 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:23:13,561 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:23:13,562 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:23:13,562 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:23:13,562 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a068220cd9a63125e810935e79eeb0e481ecd288491865590be5286d46acb22 [2023-11-29 05:23:13,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:23:13,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:23:13,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:23:13,809 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:23:13,809 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:23:13,810 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-11-29 05:23:16,578 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:23:16,788 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:23:16,789 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-11-29 05:23:16,802 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/data/c9416396c/33e9be6ae8d5457fb28cfe536d7536de/FLAG4912f0be5 [2023-11-29 05:23:16,815 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/data/c9416396c/33e9be6ae8d5457fb28cfe536d7536de [2023-11-29 05:23:16,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:23:16,818 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:23:16,819 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:23:16,819 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:23:16,823 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:23:16,824 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:23:16" (1/1) ... [2023-11-29 05:23:16,825 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e26acf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:23:16, skipping insertion in model container [2023-11-29 05:23:16,825 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:23:16" (1/1) ... [2023-11-29 05:23:16,868 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:23:17,047 WARN L240 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_4ab41a7b-a133-469d-9148-727cb5912719/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7235,7248] [2023-11-29 05:23:17,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:23:17,100 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:23:17,144 WARN L240 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_4ab41a7b-a133-469d-9148-727cb5912719/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7235,7248] [2023-11-29 05:23:17,167 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:23:17,184 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:23:17,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:23:17 WrapperNode [2023-11-29 05:23:17,184 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:23:17,185 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:23:17,185 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:23:17,185 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:23:17,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:23:17" (1/1) ... [2023-11-29 05:23:17,203 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:23:17" (1/1) ... [2023-11-29 05:23:17,237 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 624 [2023-11-29 05:23:17,238 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:23:17,238 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:23:17,238 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:23:17,239 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:23:17,247 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:23:17" (1/1) ... [2023-11-29 05:23:17,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:23:17" (1/1) ... [2023-11-29 05:23:17,252 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:23:17" (1/1) ... [2023-11-29 05:23:17,271 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]. [2023-11-29 05:23:17,271 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:23:17" (1/1) ... [2023-11-29 05:23:17,272 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:23:17" (1/1) ... [2023-11-29 05:23:17,283 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:23:17" (1/1) ... [2023-11-29 05:23:17,288 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:23:17" (1/1) ... [2023-11-29 05:23:17,291 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:23:17" (1/1) ... [2023-11-29 05:23:17,294 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:23:17" (1/1) ... [2023-11-29 05:23:17,299 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:23:17,300 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:23:17,300 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:23:17,300 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:23:17,301 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:23:17" (1/1) ... [2023-11-29 05:23:17,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:23:17,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:23:17,329 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:23:17,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:23:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:23:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:23:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:23:17,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:23:17,493 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:23:17,495 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:23:17,997 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:23:18,040 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:23:18,041 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 05:23:18,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:23:18 BoogieIcfgContainer [2023-11-29 05:23:18,041 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:23:18,044 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:23:18,045 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:23:18,048 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:23:18,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:23:16" (1/3) ... [2023-11-29 05:23:18,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f3a46a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:23:18, skipping insertion in model container [2023-11-29 05:23:18,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:23:17" (2/3) ... [2023-11-29 05:23:18,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f3a46a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:23:18, skipping insertion in model container [2023-11-29 05:23:18,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:23:18" (3/3) ... [2023-11-29 05:23:18,051 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-11-29 05:23:18,069 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:23:18,069 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:23:18,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:23:18,125 INFO L357 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, mHoare=true, 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;@3f68e3f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:23:18,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 05:23:18,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 139 states, 131 states have (on average 1.786259541984733) internal successors, (234), 138 states have internal predecessors, (234), 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) [2023-11-29 05:23:18,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 05:23:18,139 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:18,139 INFO L195 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] [2023-11-29 05:23:18,140 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:18,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:18,144 INFO L85 PathProgramCache]: Analyzing trace with hash -257930743, now seen corresponding path program 1 times [2023-11-29 05:23:18,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:18,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687435239] [2023-11-29 05:23:18,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:18,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:18,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:18,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:18,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687435239] [2023-11-29 05:23:18,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687435239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:18,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:18,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:23:18,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186486923] [2023-11-29 05:23:18,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:18,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:23:18,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:18,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:23:18,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:23:18,556 INFO L87 Difference]: Start difference. First operand has 139 states, 131 states have (on average 1.786259541984733) internal successors, (234), 138 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-29 05:23:18,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:18,635 INFO L93 Difference]: Finished difference Result 300 states and 487 transitions. [2023-11-29 05:23:18,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:23:18,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2023-11-29 05:23:18,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:18,649 INFO L225 Difference]: With dead ends: 300 [2023-11-29 05:23:18,649 INFO L226 Difference]: Without dead ends: 199 [2023-11-29 05:23:18,652 INFO L412 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 [2023-11-29 05:23:18,656 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 130 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:18,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 404 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:18,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-29 05:23:18,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 197. [2023-11-29 05:23:18,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.530612244897959) internal successors, (300), 196 states have internal predecessors, (300), 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) [2023-11-29 05:23:18,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 300 transitions. [2023-11-29 05:23:18,706 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 300 transitions. Word has length 56 [2023-11-29 05:23:18,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:18,707 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 300 transitions. [2023-11-29 05:23:18,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-29 05:23:18,707 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 300 transitions. [2023-11-29 05:23:18,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 05:23:18,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:18,710 INFO L195 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] [2023-11-29 05:23:18,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:23:18,711 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:18,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:18,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1691975926, now seen corresponding path program 1 times [2023-11-29 05:23:18,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:18,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747212657] [2023-11-29 05:23:18,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:18,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:18,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:18,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:18,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747212657] [2023-11-29 05:23:18,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747212657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:18,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:18,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:23:18,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678841312] [2023-11-29 05:23:18,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:18,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:23:18,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:18,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:23:18,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:23:18,841 INFO L87 Difference]: Start difference. First operand 197 states and 300 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-11-29 05:23:18,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:18,872 INFO L93 Difference]: Finished difference Result 471 states and 732 transitions. [2023-11-29 05:23:18,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:23:18,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2023-11-29 05:23:18,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:18,876 INFO L225 Difference]: With dead ends: 471 [2023-11-29 05:23:18,876 INFO L226 Difference]: Without dead ends: 327 [2023-11-29 05:23:18,877 INFO L412 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 [2023-11-29 05:23:18,878 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 102 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:18,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 416 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:18,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-11-29 05:23:18,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 325. [2023-11-29 05:23:18,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 1.5432098765432098) internal successors, (500), 324 states have internal predecessors, (500), 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) [2023-11-29 05:23:18,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 500 transitions. [2023-11-29 05:23:18,904 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 500 transitions. Word has length 58 [2023-11-29 05:23:18,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:18,904 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 500 transitions. [2023-11-29 05:23:18,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-11-29 05:23:18,905 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 500 transitions. [2023-11-29 05:23:18,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-29 05:23:18,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:18,921 INFO L195 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] [2023-11-29 05:23:18,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:23:18,921 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:18,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:18,922 INFO L85 PathProgramCache]: Analyzing trace with hash -62203140, now seen corresponding path program 1 times [2023-11-29 05:23:18,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:18,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044349502] [2023-11-29 05:23:18,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:18,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:19,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:19,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:19,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044349502] [2023-11-29 05:23:19,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044349502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:19,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:19,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:23:19,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470536552] [2023-11-29 05:23:19,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:19,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:23:19,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:19,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:23:19,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:23:19,019 INFO L87 Difference]: Start difference. First operand 325 states and 500 transitions. Second operand has 3 states, 3 states have (on average 20.0) 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) [2023-11-29 05:23:19,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:19,041 INFO L93 Difference]: Finished difference Result 598 states and 932 transitions. [2023-11-29 05:23:19,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:23:19,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) 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 [2023-11-29 05:23:19,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:19,045 INFO L225 Difference]: With dead ends: 598 [2023-11-29 05:23:19,045 INFO L226 Difference]: Without dead ends: 454 [2023-11-29 05:23:19,046 INFO L412 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 [2023-11-29 05:23:19,047 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 103 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:19,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 418 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:19,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-11-29 05:23:19,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 452. [2023-11-29 05:23:19,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 451 states have (on average 1.5476718403547671) internal successors, (698), 451 states have internal predecessors, (698), 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) [2023-11-29 05:23:19,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 698 transitions. [2023-11-29 05:23:19,067 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 698 transitions. Word has length 60 [2023-11-29 05:23:19,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:19,067 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 698 transitions. [2023-11-29 05:23:19,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) 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) [2023-11-29 05:23:19,068 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 698 transitions. [2023-11-29 05:23:19,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-29 05:23:19,070 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:19,070 INFO L195 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] [2023-11-29 05:23:19,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:23:19,070 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:19,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:19,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1225726807, now seen corresponding path program 1 times [2023-11-29 05:23:19,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:19,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111262997] [2023-11-29 05:23:19,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:19,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:19,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:19,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:19,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111262997] [2023-11-29 05:23:19,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111262997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:19,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:19,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:23:19,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15175533] [2023-11-29 05:23:19,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:19,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:23:19,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:19,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:23:19,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:23:19,162 INFO L87 Difference]: Start difference. First operand 452 states and 698 transitions. Second operand has 3 states, 3 states have (on average 20.0) 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) [2023-11-29 05:23:19,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:19,187 INFO L93 Difference]: Finished difference Result 1162 states and 1802 transitions. [2023-11-29 05:23:19,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:23:19,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) 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 [2023-11-29 05:23:19,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:19,193 INFO L225 Difference]: With dead ends: 1162 [2023-11-29 05:23:19,193 INFO L226 Difference]: Without dead ends: 786 [2023-11-29 05:23:19,194 INFO L412 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 [2023-11-29 05:23:19,195 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 97 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:19,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 362 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:19,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2023-11-29 05:23:19,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 784. [2023-11-29 05:23:19,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.537675606641124) internal successors, (1204), 783 states have internal predecessors, (1204), 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) [2023-11-29 05:23:19,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1204 transitions. [2023-11-29 05:23:19,220 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1204 transitions. Word has length 60 [2023-11-29 05:23:19,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:19,220 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1204 transitions. [2023-11-29 05:23:19,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) 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) [2023-11-29 05:23:19,221 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1204 transitions. [2023-11-29 05:23:19,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 05:23:19,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:19,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:19,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 05:23:19,222 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:19,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:19,223 INFO L85 PathProgramCache]: Analyzing trace with hash -792993450, now seen corresponding path program 1 times [2023-11-29 05:23:19,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:19,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650608052] [2023-11-29 05:23:19,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:19,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:19,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:19,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:19,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650608052] [2023-11-29 05:23:19,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650608052] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:19,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:19,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:23:19,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609475836] [2023-11-29 05:23:19,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:19,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:23:19,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:19,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:23:19,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:23:19,344 INFO L87 Difference]: Start difference. First operand 784 states and 1204 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:19,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:19,502 INFO L93 Difference]: Finished difference Result 3532 states and 5522 transitions. [2023-11-29 05:23:19,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:23:19,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-11-29 05:23:19,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:19,519 INFO L225 Difference]: With dead ends: 3532 [2023-11-29 05:23:19,519 INFO L226 Difference]: Without dead ends: 2808 [2023-11-29 05:23:19,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:23:19,522 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 825 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:19,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 1222 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:23:19,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2808 states. [2023-11-29 05:23:19,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2808 to 1387. [2023-11-29 05:23:19,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1387 states, 1386 states have (on average 1.554834054834055) internal successors, (2155), 1386 states have internal predecessors, (2155), 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) [2023-11-29 05:23:19,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 2155 transitions. [2023-11-29 05:23:19,569 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 2155 transitions. Word has length 62 [2023-11-29 05:23:19,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:19,570 INFO L495 AbstractCegarLoop]: Abstraction has 1387 states and 2155 transitions. [2023-11-29 05:23:19,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:19,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 2155 transitions. [2023-11-29 05:23:19,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 05:23:19,571 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:19,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:19,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 05:23:19,571 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:19,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:19,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1124502626, now seen corresponding path program 1 times [2023-11-29 05:23:19,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:19,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787299595] [2023-11-29 05:23:19,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:19,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:19,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:19,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:19,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787299595] [2023-11-29 05:23:19,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787299595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:19,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:19,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:23:19,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904918459] [2023-11-29 05:23:19,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:19,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:23:19,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:19,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:23:19,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:23:19,675 INFO L87 Difference]: Start difference. First operand 1387 states and 2155 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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) [2023-11-29 05:23:19,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:19,758 INFO L93 Difference]: Finished difference Result 4066 states and 6377 transitions. [2023-11-29 05:23:19,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:23:19,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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 63 [2023-11-29 05:23:19,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:19,774 INFO L225 Difference]: With dead ends: 4066 [2023-11-29 05:23:19,774 INFO L226 Difference]: Without dead ends: 2757 [2023-11-29 05:23:19,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:23:19,777 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 355 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:19,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 594 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:19,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2023-11-29 05:23:19,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2055. [2023-11-29 05:23:19,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2055 states, 2054 states have (on average 1.5550146056475171) internal successors, (3194), 2054 states have internal predecessors, (3194), 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) [2023-11-29 05:23:19,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 3194 transitions. [2023-11-29 05:23:19,840 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 3194 transitions. Word has length 63 [2023-11-29 05:23:19,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:19,840 INFO L495 AbstractCegarLoop]: Abstraction has 2055 states and 3194 transitions. [2023-11-29 05:23:19,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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) [2023-11-29 05:23:19,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 3194 transitions. [2023-11-29 05:23:19,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 05:23:19,842 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:19,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:19,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 05:23:19,842 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:19,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:19,843 INFO L85 PathProgramCache]: Analyzing trace with hash -808788401, now seen corresponding path program 1 times [2023-11-29 05:23:19,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:19,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838574153] [2023-11-29 05:23:19,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:19,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:19,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:19,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:19,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838574153] [2023-11-29 05:23:19,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838574153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:19,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:19,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:23:19,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968194913] [2023-11-29 05:23:19,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:19,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:23:19,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:19,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:23:19,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:23:19,910 INFO L87 Difference]: Start difference. First operand 2055 states and 3194 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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) [2023-11-29 05:23:19,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:19,948 INFO L93 Difference]: Finished difference Result 3971 states and 6192 transitions. [2023-11-29 05:23:19,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:23:19,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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 63 [2023-11-29 05:23:19,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:19,963 INFO L225 Difference]: With dead ends: 3971 [2023-11-29 05:23:19,963 INFO L226 Difference]: Without dead ends: 2868 [2023-11-29 05:23:19,965 INFO L412 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 [2023-11-29 05:23:19,966 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 98 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:19,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 400 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:19,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2023-11-29 05:23:20,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 2866. [2023-11-29 05:23:20,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2865 states have (on average 1.543455497382199) internal successors, (4422), 2865 states have internal predecessors, (4422), 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) [2023-11-29 05:23:20,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 4422 transitions. [2023-11-29 05:23:20,038 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 4422 transitions. Word has length 63 [2023-11-29 05:23:20,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:20,039 INFO L495 AbstractCegarLoop]: Abstraction has 2866 states and 4422 transitions. [2023-11-29 05:23:20,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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) [2023-11-29 05:23:20,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 4422 transitions. [2023-11-29 05:23:20,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 05:23:20,040 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:20,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:20,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:23:20,041 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:20,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:20,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1440634225, now seen corresponding path program 1 times [2023-11-29 05:23:20,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:20,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107962414] [2023-11-29 05:23:20,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:20,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:20,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:20,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:20,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107962414] [2023-11-29 05:23:20,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107962414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:20,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:20,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:23:20,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217309842] [2023-11-29 05:23:20,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:20,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:23:20,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:20,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:23:20,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:23:20,099 INFO L87 Difference]: Start difference. First operand 2866 states and 4422 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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) [2023-11-29 05:23:20,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:20,148 INFO L93 Difference]: Finished difference Result 6148 states and 9504 transitions. [2023-11-29 05:23:20,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:23:20,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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 63 [2023-11-29 05:23:20,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:20,170 INFO L225 Difference]: With dead ends: 6148 [2023-11-29 05:23:20,170 INFO L226 Difference]: Without dead ends: 4132 [2023-11-29 05:23:20,173 INFO L412 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 [2023-11-29 05:23:20,174 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 108 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:20,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 445 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:20,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4132 states. [2023-11-29 05:23:20,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4132 to 4130. [2023-11-29 05:23:20,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4130 states, 4129 states have (on average 1.5277306853959796) internal successors, (6308), 4129 states have internal predecessors, (6308), 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) [2023-11-29 05:23:20,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 6308 transitions. [2023-11-29 05:23:20,273 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 6308 transitions. Word has length 63 [2023-11-29 05:23:20,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:20,273 INFO L495 AbstractCegarLoop]: Abstraction has 4130 states and 6308 transitions. [2023-11-29 05:23:20,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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) [2023-11-29 05:23:20,274 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 6308 transitions. [2023-11-29 05:23:20,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 05:23:20,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:20,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:20,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 05:23:20,275 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:20,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:20,275 INFO L85 PathProgramCache]: Analyzing trace with hash 434025879, now seen corresponding path program 1 times [2023-11-29 05:23:20,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:20,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095417048] [2023-11-29 05:23:20,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:20,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:20,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:20,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:20,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095417048] [2023-11-29 05:23:20,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095417048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:20,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:20,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:23:20,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352173921] [2023-11-29 05:23:20,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:20,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:23:20,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:20,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:23:20,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:23:20,550 INFO L87 Difference]: Start difference. First operand 4130 states and 6308 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-11-29 05:23:20,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:20,631 INFO L93 Difference]: Finished difference Result 6928 states and 10497 transitions. [2023-11-29 05:23:20,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:23:20,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 71 [2023-11-29 05:23:20,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:20,667 INFO L225 Difference]: With dead ends: 6928 [2023-11-29 05:23:20,668 INFO L226 Difference]: Without dead ends: 6926 [2023-11-29 05:23:20,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:23:20,671 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 226 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:20,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 912 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:20,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6926 states. [2023-11-29 05:23:20,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6926 to 4234. [2023-11-29 05:23:20,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4234 states, 4233 states have (on average 1.5083864871249704) internal successors, (6385), 4233 states have internal predecessors, (6385), 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) [2023-11-29 05:23:20,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4234 states to 4234 states and 6385 transitions. [2023-11-29 05:23:20,791 INFO L78 Accepts]: Start accepts. Automaton has 4234 states and 6385 transitions. Word has length 71 [2023-11-29 05:23:20,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:20,792 INFO L495 AbstractCegarLoop]: Abstraction has 4234 states and 6385 transitions. [2023-11-29 05:23:20,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-11-29 05:23:20,792 INFO L276 IsEmpty]: Start isEmpty. Operand 4234 states and 6385 transitions. [2023-11-29 05:23:20,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 05:23:20,794 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:20,794 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:20,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 05:23:20,794 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:20,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:20,795 INFO L85 PathProgramCache]: Analyzing trace with hash 575576521, now seen corresponding path program 1 times [2023-11-29 05:23:20,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:20,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852183768] [2023-11-29 05:23:20,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:20,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:20,967 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 05:23:20,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:20,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852183768] [2023-11-29 05:23:20,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852183768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:20,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:20,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:23:20,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380773042] [2023-11-29 05:23:20,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:20,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:23:20,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:20,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:23:20,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:23:20,970 INFO L87 Difference]: Start difference. First operand 4234 states and 6385 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2023-11-29 05:23:21,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:21,118 INFO L93 Difference]: Finished difference Result 12261 states and 18532 transitions. [2023-11-29 05:23:21,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:23:21,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 92 [2023-11-29 05:23:21,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:21,155 INFO L225 Difference]: With dead ends: 12261 [2023-11-29 05:23:21,155 INFO L226 Difference]: Without dead ends: 9443 [2023-11-29 05:23:21,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:23:21,162 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 448 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:21,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 844 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:21,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9443 states. [2023-11-29 05:23:21,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9443 to 6811. [2023-11-29 05:23:21,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6811 states, 6810 states have (on average 1.505726872246696) internal successors, (10254), 6810 states have internal predecessors, (10254), 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) [2023-11-29 05:23:21,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6811 states to 6811 states and 10254 transitions. [2023-11-29 05:23:21,348 INFO L78 Accepts]: Start accepts. Automaton has 6811 states and 10254 transitions. Word has length 92 [2023-11-29 05:23:21,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:21,348 INFO L495 AbstractCegarLoop]: Abstraction has 6811 states and 10254 transitions. [2023-11-29 05:23:21,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2023-11-29 05:23:21,349 INFO L276 IsEmpty]: Start isEmpty. Operand 6811 states and 10254 transitions. [2023-11-29 05:23:21,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 05:23:21,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:21,351 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:21,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 05:23:21,351 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:21,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:21,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1946475532, now seen corresponding path program 1 times [2023-11-29 05:23:21,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:21,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504779316] [2023-11-29 05:23:21,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:21,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:21,486 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:23:21,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:21,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504779316] [2023-11-29 05:23:21,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504779316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:21,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:21,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:23:21,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822961549] [2023-11-29 05:23:21,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:21,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:23:21,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:21,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:23:21,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:23:21,489 INFO L87 Difference]: Start difference. First operand 6811 states and 10254 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2023-11-29 05:23:21,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:21,635 INFO L93 Difference]: Finished difference Result 13808 states and 20860 transitions. [2023-11-29 05:23:21,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:23:21,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 92 [2023-11-29 05:23:21,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:21,657 INFO L225 Difference]: With dead ends: 13808 [2023-11-29 05:23:21,657 INFO L226 Difference]: Without dead ends: 10990 [2023-11-29 05:23:21,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:23:21,664 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 447 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:21,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 844 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:21,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10990 states. [2023-11-29 05:23:21,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10990 to 10215. [2023-11-29 05:23:21,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10215 states, 10214 states have (on average 1.5042099079694538) internal successors, (15364), 10214 states have internal predecessors, (15364), 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) [2023-11-29 05:23:21,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10215 states to 10215 states and 15364 transitions. [2023-11-29 05:23:21,875 INFO L78 Accepts]: Start accepts. Automaton has 10215 states and 15364 transitions. Word has length 92 [2023-11-29 05:23:21,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:21,875 INFO L495 AbstractCegarLoop]: Abstraction has 10215 states and 15364 transitions. [2023-11-29 05:23:21,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2023-11-29 05:23:21,876 INFO L276 IsEmpty]: Start isEmpty. Operand 10215 states and 15364 transitions. [2023-11-29 05:23:21,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-29 05:23:21,878 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:21,878 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:21,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 05:23:21,878 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:21,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:21,879 INFO L85 PathProgramCache]: Analyzing trace with hash 621891858, now seen corresponding path program 1 times [2023-11-29 05:23:21,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:21,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285389187] [2023-11-29 05:23:21,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:21,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:22,023 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:23:22,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:22,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285389187] [2023-11-29 05:23:22,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285389187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:22,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:22,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:23:22,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711906447] [2023-11-29 05:23:22,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:22,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:23:22,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:22,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:23:22,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:23:22,025 INFO L87 Difference]: Start difference. First operand 10215 states and 15364 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 05:23:22,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:22,168 INFO L93 Difference]: Finished difference Result 14313 states and 21642 transitions. [2023-11-29 05:23:22,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:23:22,168 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 92 [2023-11-29 05:23:22,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:22,191 INFO L225 Difference]: With dead ends: 14313 [2023-11-29 05:23:22,191 INFO L226 Difference]: Without dead ends: 12541 [2023-11-29 05:23:22,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:23:22,197 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 444 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:22,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 958 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:22,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12541 states. [2023-11-29 05:23:22,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12541 to 11775. [2023-11-29 05:23:22,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11775 states, 11774 states have (on average 1.50653983353151) internal successors, (17738), 11774 states have internal predecessors, (17738), 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) [2023-11-29 05:23:22,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11775 states to 11775 states and 17738 transitions. [2023-11-29 05:23:22,417 INFO L78 Accepts]: Start accepts. Automaton has 11775 states and 17738 transitions. Word has length 92 [2023-11-29 05:23:22,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:22,418 INFO L495 AbstractCegarLoop]: Abstraction has 11775 states and 17738 transitions. [2023-11-29 05:23:22,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 05:23:22,419 INFO L276 IsEmpty]: Start isEmpty. Operand 11775 states and 17738 transitions. [2023-11-29 05:23:22,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 05:23:22,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:22,421 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:22,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 05:23:22,421 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:22,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:22,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1332792260, now seen corresponding path program 1 times [2023-11-29 05:23:22,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:22,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168834374] [2023-11-29 05:23:22,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:22,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:22,565 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:22,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:22,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168834374] [2023-11-29 05:23:22,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168834374] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:22,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:22,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:23:22,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990746589] [2023-11-29 05:23:22,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:22,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:23:22,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:22,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:23:22,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:23:22,567 INFO L87 Difference]: Start difference. First operand 11775 states and 17738 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2023-11-29 05:23:22,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:22,713 INFO L93 Difference]: Finished difference Result 22117 states and 33402 transitions. [2023-11-29 05:23:22,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:23:22,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 93 [2023-11-29 05:23:22,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:22,731 INFO L225 Difference]: With dead ends: 22117 [2023-11-29 05:23:22,732 INFO L226 Difference]: Without dead ends: 10423 [2023-11-29 05:23:22,743 INFO L412 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 [2023-11-29 05:23:22,743 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 79 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:22,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 407 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:22,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10423 states. [2023-11-29 05:23:22,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10423 to 10415. [2023-11-29 05:23:22,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10415 states, 10414 states have (on average 1.5036489341271366) internal successors, (15659), 10414 states have internal predecessors, (15659), 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) [2023-11-29 05:23:22,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10415 states to 10415 states and 15659 transitions. [2023-11-29 05:23:22,898 INFO L78 Accepts]: Start accepts. Automaton has 10415 states and 15659 transitions. Word has length 93 [2023-11-29 05:23:22,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:22,898 INFO L495 AbstractCegarLoop]: Abstraction has 10415 states and 15659 transitions. [2023-11-29 05:23:22,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2023-11-29 05:23:22,898 INFO L276 IsEmpty]: Start isEmpty. Operand 10415 states and 15659 transitions. [2023-11-29 05:23:22,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 05:23:22,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:22,900 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:22,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 05:23:22,901 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:22,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:22,901 INFO L85 PathProgramCache]: Analyzing trace with hash -336919691, now seen corresponding path program 1 times [2023-11-29 05:23:22,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:22,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638744046] [2023-11-29 05:23:22,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:22,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:23,356 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:23:23,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:23,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638744046] [2023-11-29 05:23:23,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638744046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:23,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:23,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:23:23,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925257473] [2023-11-29 05:23:23,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:23,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:23:23,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:23,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:23:23,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:23:23,359 INFO L87 Difference]: Start difference. First operand 10415 states and 15659 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2023-11-29 05:23:23,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:23,565 INFO L93 Difference]: Finished difference Result 29522 states and 44374 transitions. [2023-11-29 05:23:23,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:23:23,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 93 [2023-11-29 05:23:23,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:23,603 INFO L225 Difference]: With dead ends: 29522 [2023-11-29 05:23:23,603 INFO L226 Difference]: Without dead ends: 21594 [2023-11-29 05:23:23,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:23:23,614 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 374 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:23,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 511 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:23,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21594 states. [2023-11-29 05:23:23,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21594 to 18257. [2023-11-29 05:23:23,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18257 states, 18256 states have (on average 1.4997261174408414) internal successors, (27379), 18256 states have internal predecessors, (27379), 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) [2023-11-29 05:23:23,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18257 states to 18257 states and 27379 transitions. [2023-11-29 05:23:23,858 INFO L78 Accepts]: Start accepts. Automaton has 18257 states and 27379 transitions. Word has length 93 [2023-11-29 05:23:23,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:23,858 INFO L495 AbstractCegarLoop]: Abstraction has 18257 states and 27379 transitions. [2023-11-29 05:23:23,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2023-11-29 05:23:23,858 INFO L276 IsEmpty]: Start isEmpty. Operand 18257 states and 27379 transitions. [2023-11-29 05:23:23,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 05:23:23,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:23,860 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:23,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 05:23:23,861 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:23,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:23,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1876289132, now seen corresponding path program 1 times [2023-11-29 05:23:23,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:23,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61212854] [2023-11-29 05:23:23,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:23,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:23,918 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:23:23,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:23,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61212854] [2023-11-29 05:23:23,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61212854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:23,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:23,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:23:23,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52712308] [2023-11-29 05:23:23,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:23,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:23:23,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:23,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:23:23,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:23:23,921 INFO L87 Difference]: Start difference. First operand 18257 states and 27379 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2023-11-29 05:23:24,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:24,019 INFO L93 Difference]: Finished difference Result 42099 states and 63245 transitions. [2023-11-29 05:23:24,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:23:24,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 93 [2023-11-29 05:23:24,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:24,059 INFO L225 Difference]: With dead ends: 42099 [2023-11-29 05:23:24,059 INFO L226 Difference]: Without dead ends: 30792 [2023-11-29 05:23:24,072 INFO L412 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 [2023-11-29 05:23:24,073 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 88 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:24,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 349 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:24,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30792 states. [2023-11-29 05:23:24,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30792 to 30702. [2023-11-29 05:23:24,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30702 states, 30701 states have (on average 1.4973453633432137) internal successors, (45970), 30701 states have internal predecessors, (45970), 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) [2023-11-29 05:23:24,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30702 states to 30702 states and 45970 transitions. [2023-11-29 05:23:24,512 INFO L78 Accepts]: Start accepts. Automaton has 30702 states and 45970 transitions. Word has length 93 [2023-11-29 05:23:24,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:24,513 INFO L495 AbstractCegarLoop]: Abstraction has 30702 states and 45970 transitions. [2023-11-29 05:23:24,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2023-11-29 05:23:24,513 INFO L276 IsEmpty]: Start isEmpty. Operand 30702 states and 45970 transitions. [2023-11-29 05:23:24,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 05:23:24,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:24,515 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:24,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 05:23:24,515 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:24,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:24,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1267915824, now seen corresponding path program 1 times [2023-11-29 05:23:24,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:24,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772287095] [2023-11-29 05:23:24,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:24,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:24,700 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:24,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:24,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772287095] [2023-11-29 05:23:24,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772287095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:24,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:24,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:23:24,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688279454] [2023-11-29 05:23:24,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:24,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:23:24,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:24,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:23:24,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:23:24,704 INFO L87 Difference]: Start difference. First operand 30702 states and 45970 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2023-11-29 05:23:24,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:24,850 INFO L93 Difference]: Finished difference Result 44091 states and 66062 transitions. [2023-11-29 05:23:24,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:23:24,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 93 [2023-11-29 05:23:24,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:24,872 INFO L225 Difference]: With dead ends: 44091 [2023-11-29 05:23:24,872 INFO L226 Difference]: Without dead ends: 13491 [2023-11-29 05:23:24,894 INFO L412 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 [2023-11-29 05:23:24,895 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 57 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:24,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 385 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:24,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13491 states. [2023-11-29 05:23:25,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13491 to 13373. [2023-11-29 05:23:25,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13373 states, 13372 states have (on average 1.4880346993718216) internal successors, (19898), 13372 states have internal predecessors, (19898), 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) [2023-11-29 05:23:25,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13373 states to 13373 states and 19898 transitions. [2023-11-29 05:23:25,079 INFO L78 Accepts]: Start accepts. Automaton has 13373 states and 19898 transitions. Word has length 93 [2023-11-29 05:23:25,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:25,079 INFO L495 AbstractCegarLoop]: Abstraction has 13373 states and 19898 transitions. [2023-11-29 05:23:25,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2023-11-29 05:23:25,079 INFO L276 IsEmpty]: Start isEmpty. Operand 13373 states and 19898 transitions. [2023-11-29 05:23:25,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 05:23:25,081 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:25,081 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:25,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 05:23:25,081 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:25,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:25,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1178389553, now seen corresponding path program 1 times [2023-11-29 05:23:25,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:25,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408089894] [2023-11-29 05:23:25,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:25,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:25,475 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:23:25,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:25,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408089894] [2023-11-29 05:23:25,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408089894] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:25,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:25,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:23:25,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816172822] [2023-11-29 05:23:25,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:25,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:23:25,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:25,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:23:25,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:23:25,477 INFO L87 Difference]: Start difference. First operand 13373 states and 19898 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2023-11-29 05:23:25,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:25,599 INFO L93 Difference]: Finished difference Result 37336 states and 55520 transitions. [2023-11-29 05:23:25,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:23:25,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 93 [2023-11-29 05:23:25,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:25,709 INFO L225 Difference]: With dead ends: 37336 [2023-11-29 05:23:25,709 INFO L226 Difference]: Without dead ends: 27384 [2023-11-29 05:23:25,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:23:25,715 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 357 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:25,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 537 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:25,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27384 states. [2023-11-29 05:23:25,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27384 to 23215. [2023-11-29 05:23:25,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23215 states, 23214 states have (on average 1.4839321099336606) internal successors, (34448), 23214 states have internal predecessors, (34448), 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) [2023-11-29 05:23:25,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23215 states to 23215 states and 34448 transitions. [2023-11-29 05:23:25,991 INFO L78 Accepts]: Start accepts. Automaton has 23215 states and 34448 transitions. Word has length 93 [2023-11-29 05:23:25,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:25,992 INFO L495 AbstractCegarLoop]: Abstraction has 23215 states and 34448 transitions. [2023-11-29 05:23:25,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2023-11-29 05:23:25,992 INFO L276 IsEmpty]: Start isEmpty. Operand 23215 states and 34448 transitions. [2023-11-29 05:23:25,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-29 05:23:25,993 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:25,993 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:25,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 05:23:25,993 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:25,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:25,994 INFO L85 PathProgramCache]: Analyzing trace with hash 562329573, now seen corresponding path program 1 times [2023-11-29 05:23:25,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:25,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421181192] [2023-11-29 05:23:25,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:25,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:26,168 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:23:26,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:26,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421181192] [2023-11-29 05:23:26,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421181192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:26,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:26,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:23:26,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551206392] [2023-11-29 05:23:26,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:26,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:23:26,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:26,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:23:26,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:23:26,170 INFO L87 Difference]: Start difference. First operand 23215 states and 34448 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2023-11-29 05:23:26,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:26,286 INFO L93 Difference]: Finished difference Result 38239 states and 56963 transitions. [2023-11-29 05:23:26,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:23:26,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 93 [2023-11-29 05:23:26,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:26,320 INFO L225 Difference]: With dead ends: 38239 [2023-11-29 05:23:26,321 INFO L226 Difference]: Without dead ends: 30649 [2023-11-29 05:23:26,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:23:26,332 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 201 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:26,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 620 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:26,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30649 states. [2023-11-29 05:23:26,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30649 to 27697. [2023-11-29 05:23:26,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27697 states, 27696 states have (on average 1.4826689774696706) internal successors, (41064), 27696 states have internal predecessors, (41064), 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) [2023-11-29 05:23:26,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27697 states to 27697 states and 41064 transitions. [2023-11-29 05:23:26,735 INFO L78 Accepts]: Start accepts. Automaton has 27697 states and 41064 transitions. Word has length 93 [2023-11-29 05:23:26,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:26,736 INFO L495 AbstractCegarLoop]: Abstraction has 27697 states and 41064 transitions. [2023-11-29 05:23:26,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2023-11-29 05:23:26,736 INFO L276 IsEmpty]: Start isEmpty. Operand 27697 states and 41064 transitions. [2023-11-29 05:23:26,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-29 05:23:26,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:26,738 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:26,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 05:23:26,738 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:26,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:26,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1284766273, now seen corresponding path program 1 times [2023-11-29 05:23:26,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:26,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43993489] [2023-11-29 05:23:26,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:26,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:26,820 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:26,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:26,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43993489] [2023-11-29 05:23:26,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43993489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:26,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:26,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:23:26,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915780061] [2023-11-29 05:23:26,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:26,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:23:26,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:26,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:23:26,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:23:26,823 INFO L87 Difference]: Start difference. First operand 27697 states and 41064 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2023-11-29 05:23:27,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:27,106 INFO L93 Difference]: Finished difference Result 81502 states and 120667 transitions. [2023-11-29 05:23:27,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:23:27,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 94 [2023-11-29 05:23:27,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:27,177 INFO L225 Difference]: With dead ends: 81502 [2023-11-29 05:23:27,177 INFO L226 Difference]: Without dead ends: 53888 [2023-11-29 05:23:27,203 INFO L412 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 [2023-11-29 05:23:27,204 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 145 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:27,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 472 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:27,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53888 states. [2023-11-29 05:23:27,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53888 to 53886. [2023-11-29 05:23:27,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53886 states, 53885 states have (on average 1.4682935881970864) internal successors, (79119), 53885 states have internal predecessors, (79119), 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) [2023-11-29 05:23:28,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53886 states to 53886 states and 79119 transitions. [2023-11-29 05:23:28,121 INFO L78 Accepts]: Start accepts. Automaton has 53886 states and 79119 transitions. Word has length 94 [2023-11-29 05:23:28,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:28,121 INFO L495 AbstractCegarLoop]: Abstraction has 53886 states and 79119 transitions. [2023-11-29 05:23:28,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2023-11-29 05:23:28,122 INFO L276 IsEmpty]: Start isEmpty. Operand 53886 states and 79119 transitions. [2023-11-29 05:23:28,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-29 05:23:28,123 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:28,123 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:28,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 05:23:28,124 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:28,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:28,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2101317173, now seen corresponding path program 1 times [2023-11-29 05:23:28,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:28,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160135331] [2023-11-29 05:23:28,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:28,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:28,187 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:23:28,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:28,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160135331] [2023-11-29 05:23:28,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160135331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:28,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:28,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:23:28,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705674290] [2023-11-29 05:23:28,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:28,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:23:28,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:28,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:23:28,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:23:28,189 INFO L87 Difference]: Start difference. First operand 53886 states and 79119 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2023-11-29 05:23:28,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:28,663 INFO L93 Difference]: Finished difference Result 158114 states and 231759 transitions. [2023-11-29 05:23:28,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:23:28,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 94 [2023-11-29 05:23:28,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:28,760 INFO L225 Difference]: With dead ends: 158114 [2023-11-29 05:23:28,760 INFO L226 Difference]: Without dead ends: 104356 [2023-11-29 05:23:28,781 INFO L412 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 [2023-11-29 05:23:28,781 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 127 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:28,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 439 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:28,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104356 states. [2023-11-29 05:23:29,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104356 to 104354. [2023-11-29 05:23:29,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104354 states, 104353 states have (on average 1.4519371747817504) internal successors, (151514), 104353 states have internal predecessors, (151514), 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) [2023-11-29 05:23:29,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104354 states to 104354 states and 151514 transitions. [2023-11-29 05:23:29,998 INFO L78 Accepts]: Start accepts. Automaton has 104354 states and 151514 transitions. Word has length 94 [2023-11-29 05:23:29,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:29,999 INFO L495 AbstractCegarLoop]: Abstraction has 104354 states and 151514 transitions. [2023-11-29 05:23:29,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2023-11-29 05:23:29,999 INFO L276 IsEmpty]: Start isEmpty. Operand 104354 states and 151514 transitions. [2023-11-29 05:23:30,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 05:23:30,001 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:30,001 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:30,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 05:23:30,002 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:30,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:30,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1310281361, now seen corresponding path program 1 times [2023-11-29 05:23:30,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:30,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575169510] [2023-11-29 05:23:30,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:30,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:30,313 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 05:23:30,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:30,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575169510] [2023-11-29 05:23:30,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575169510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:30,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:30,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:23:30,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884424880] [2023-11-29 05:23:30,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:30,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:23:30,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:30,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:23:30,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:23:30,317 INFO L87 Difference]: Start difference. First operand 104354 states and 151514 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2023-11-29 05:23:30,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:30,939 INFO L93 Difference]: Finished difference Result 165428 states and 241045 transitions. [2023-11-29 05:23:30,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:23:30,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 97 [2023-11-29 05:23:30,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:31,044 INFO L225 Difference]: With dead ends: 165428 [2023-11-29 05:23:31,045 INFO L226 Difference]: Without dead ends: 120342 [2023-11-29 05:23:31,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:23:31,065 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 192 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:31,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 674 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:31,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120342 states. [2023-11-29 05:23:32,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120342 to 118962. [2023-11-29 05:23:32,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118962 states, 118961 states have (on average 1.4497020031775119) internal successors, (172458), 118961 states have internal predecessors, (172458), 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) [2023-11-29 05:23:32,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118962 states to 118962 states and 172458 transitions. [2023-11-29 05:23:32,454 INFO L78 Accepts]: Start accepts. Automaton has 118962 states and 172458 transitions. Word has length 97 [2023-11-29 05:23:32,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:32,455 INFO L495 AbstractCegarLoop]: Abstraction has 118962 states and 172458 transitions. [2023-11-29 05:23:32,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2023-11-29 05:23:32,455 INFO L276 IsEmpty]: Start isEmpty. Operand 118962 states and 172458 transitions. [2023-11-29 05:23:32,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-29 05:23:32,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:32,463 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:32,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 05:23:32,463 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:32,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:32,464 INFO L85 PathProgramCache]: Analyzing trace with hash -178925965, now seen corresponding path program 1 times [2023-11-29 05:23:32,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:32,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60576791] [2023-11-29 05:23:32,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:32,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:32,515 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 05:23:32,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:32,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60576791] [2023-11-29 05:23:32,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60576791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:32,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:32,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:23:32,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065714218] [2023-11-29 05:23:32,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:32,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:23:32,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:32,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:23:32,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:23:32,517 INFO L87 Difference]: Start difference. First operand 118962 states and 172458 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2023-11-29 05:23:33,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:33,311 INFO L93 Difference]: Finished difference Result 248086 states and 359036 transitions. [2023-11-29 05:23:33,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:23:33,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 139 [2023-11-29 05:23:33,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:33,419 INFO L225 Difference]: With dead ends: 248086 [2023-11-29 05:23:33,419 INFO L226 Difference]: Without dead ends: 105754 [2023-11-29 05:23:33,477 INFO L412 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 [2023-11-29 05:23:33,478 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 69 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:33,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 438 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:33,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105754 states. [2023-11-29 05:23:34,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105754 to 91436. [2023-11-29 05:23:34,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91436 states, 91435 states have (on average 1.421381309126702) internal successors, (129964), 91435 states have internal predecessors, (129964), 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) [2023-11-29 05:23:34,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91436 states to 91436 states and 129964 transitions. [2023-11-29 05:23:34,886 INFO L78 Accepts]: Start accepts. Automaton has 91436 states and 129964 transitions. Word has length 139 [2023-11-29 05:23:34,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:34,886 INFO L495 AbstractCegarLoop]: Abstraction has 91436 states and 129964 transitions. [2023-11-29 05:23:34,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2023-11-29 05:23:34,886 INFO L276 IsEmpty]: Start isEmpty. Operand 91436 states and 129964 transitions. [2023-11-29 05:23:34,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-29 05:23:34,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:34,896 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:34,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 05:23:34,896 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:34,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:34,897 INFO L85 PathProgramCache]: Analyzing trace with hash -16044634, now seen corresponding path program 1 times [2023-11-29 05:23:34,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:34,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896565690] [2023-11-29 05:23:34,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:34,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:35,073 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 05:23:35,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:35,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896565690] [2023-11-29 05:23:35,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896565690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:35,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:35,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:23:35,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471085679] [2023-11-29 05:23:35,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:35,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:23:35,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:35,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:23:35,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:23:35,076 INFO L87 Difference]: Start difference. First operand 91436 states and 129964 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:35,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:35,685 INFO L93 Difference]: Finished difference Result 130357 states and 185235 transitions. [2023-11-29 05:23:35,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:23:35,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2023-11-29 05:23:35,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:35,727 INFO L225 Difference]: With dead ends: 130357 [2023-11-29 05:23:35,727 INFO L226 Difference]: Without dead ends: 39189 [2023-11-29 05:23:35,747 INFO L412 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 [2023-11-29 05:23:35,747 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 42 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:35,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 333 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:35,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39189 states. [2023-11-29 05:23:36,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39189 to 39034. [2023-11-29 05:23:36,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39034 states, 39033 states have (on average 1.4086542156636692) internal successors, (54984), 39033 states have internal predecessors, (54984), 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) [2023-11-29 05:23:36,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39034 states to 39034 states and 54984 transitions. [2023-11-29 05:23:36,107 INFO L78 Accepts]: Start accepts. Automaton has 39034 states and 54984 transitions. Word has length 145 [2023-11-29 05:23:36,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:36,108 INFO L495 AbstractCegarLoop]: Abstraction has 39034 states and 54984 transitions. [2023-11-29 05:23:36,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:36,108 INFO L276 IsEmpty]: Start isEmpty. Operand 39034 states and 54984 transitions. [2023-11-29 05:23:36,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-29 05:23:36,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:36,111 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:36,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 05:23:36,112 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:36,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:36,112 INFO L85 PathProgramCache]: Analyzing trace with hash 461261378, now seen corresponding path program 1 times [2023-11-29 05:23:36,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:36,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566927545] [2023-11-29 05:23:36,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:36,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:36,264 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 59 proven. 28 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:23:36,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:36,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566927545] [2023-11-29 05:23:36,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566927545] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:23:36,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914427052] [2023-11-29 05:23:36,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:36,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:36,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:23:36,268 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:23:36,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:23:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:36,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:23:36,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:23:36,796 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-29 05:23:36,797 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:23:36,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914427052] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:36,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:23:36,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 05:23:36,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910068938] [2023-11-29 05:23:36,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:36,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:23:36,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:36,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:23:36,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:23:36,799 INFO L87 Difference]: Start difference. First operand 39034 states and 54984 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 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) [2023-11-29 05:23:37,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:37,026 INFO L93 Difference]: Finished difference Result 114131 states and 160307 transitions. [2023-11-29 05:23:37,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:23:37,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 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 147 [2023-11-29 05:23:37,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:37,087 INFO L225 Difference]: With dead ends: 114131 [2023-11-29 05:23:37,087 INFO L226 Difference]: Without dead ends: 75111 [2023-11-29 05:23:37,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:23:37,113 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 382 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:37,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 432 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:37,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75111 states. [2023-11-29 05:23:37,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75111 to 75109. [2023-11-29 05:23:37,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75109 states, 75108 states have (on average 1.3889199552644191) internal successors, (104319), 75108 states have internal predecessors, (104319), 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) [2023-11-29 05:23:37,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75109 states to 75109 states and 104319 transitions. [2023-11-29 05:23:37,924 INFO L78 Accepts]: Start accepts. Automaton has 75109 states and 104319 transitions. Word has length 147 [2023-11-29 05:23:37,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:37,924 INFO L495 AbstractCegarLoop]: Abstraction has 75109 states and 104319 transitions. [2023-11-29 05:23:37,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 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) [2023-11-29 05:23:37,925 INFO L276 IsEmpty]: Start isEmpty. Operand 75109 states and 104319 transitions. [2023-11-29 05:23:37,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-29 05:23:37,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:37,930 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:37,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:23:38,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 05:23:38,131 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:38,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:38,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1150204543, now seen corresponding path program 1 times [2023-11-29 05:23:38,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:38,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770030984] [2023-11-29 05:23:38,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:38,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:38,190 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-29 05:23:38,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:38,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770030984] [2023-11-29 05:23:38,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770030984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:38,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:38,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:23:38,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21081781] [2023-11-29 05:23:38,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:38,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:23:38,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:38,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:23:38,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:23:38,193 INFO L87 Difference]: Start difference. First operand 75109 states and 104319 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2023-11-29 05:23:38,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:38,934 INFO L93 Difference]: Finished difference Result 224928 states and 312454 transitions. [2023-11-29 05:23:38,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:23:38,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 148 [2023-11-29 05:23:38,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:39,079 INFO L225 Difference]: With dead ends: 224928 [2023-11-29 05:23:39,079 INFO L226 Difference]: Without dead ends: 150076 [2023-11-29 05:23:39,115 INFO L412 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 [2023-11-29 05:23:39,116 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 167 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:39,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 456 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:39,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150076 states. [2023-11-29 05:23:40,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150076 to 75112. [2023-11-29 05:23:40,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75112 states, 75111 states have (on average 1.388917735085407) internal successors, (104323), 75111 states have internal predecessors, (104323), 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) [2023-11-29 05:23:40,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75112 states to 75112 states and 104323 transitions. [2023-11-29 05:23:40,501 INFO L78 Accepts]: Start accepts. Automaton has 75112 states and 104323 transitions. Word has length 148 [2023-11-29 05:23:40,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:40,501 INFO L495 AbstractCegarLoop]: Abstraction has 75112 states and 104323 transitions. [2023-11-29 05:23:40,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2023-11-29 05:23:40,501 INFO L276 IsEmpty]: Start isEmpty. Operand 75112 states and 104323 transitions. [2023-11-29 05:23:40,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-29 05:23:40,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:40,509 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:40,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 05:23:40,509 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:40,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:40,510 INFO L85 PathProgramCache]: Analyzing trace with hash 2092180547, now seen corresponding path program 1 times [2023-11-29 05:23:40,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:40,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273954325] [2023-11-29 05:23:40,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:40,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:40,709 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 62 proven. 25 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:23:40,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:40,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273954325] [2023-11-29 05:23:40,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273954325] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:23:40,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343028818] [2023-11-29 05:23:40,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:40,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:40,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:23:40,712 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:23:40,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:23:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:40,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:23:40,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:23:40,986 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-29 05:23:40,986 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:23:40,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343028818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:40,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:23:40,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 05:23:40,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549696132] [2023-11-29 05:23:40,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:40,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:23:40,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:40,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:23:40,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:23:40,989 INFO L87 Difference]: Start difference. First operand 75112 states and 104323 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 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) [2023-11-29 05:23:41,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:41,786 INFO L93 Difference]: Finished difference Result 221057 states and 306124 transitions. [2023-11-29 05:23:41,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:23:41,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 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 149 [2023-11-29 05:23:41,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:41,923 INFO L225 Difference]: With dead ends: 221057 [2023-11-29 05:23:41,924 INFO L226 Difference]: Without dead ends: 145951 [2023-11-29 05:23:41,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:23:41,966 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 389 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:41,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 448 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:42,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145951 states. [2023-11-29 05:23:43,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145951 to 145949. [2023-11-29 05:23:43,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145949 states, 145948 states have (on average 1.3710773700221996) internal successors, (200106), 145948 states have internal predecessors, (200106), 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) [2023-11-29 05:23:43,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145949 states to 145949 states and 200106 transitions. [2023-11-29 05:23:43,837 INFO L78 Accepts]: Start accepts. Automaton has 145949 states and 200106 transitions. Word has length 149 [2023-11-29 05:23:43,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:43,837 INFO L495 AbstractCegarLoop]: Abstraction has 145949 states and 200106 transitions. [2023-11-29 05:23:43,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 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) [2023-11-29 05:23:43,837 INFO L276 IsEmpty]: Start isEmpty. Operand 145949 states and 200106 transitions. [2023-11-29 05:23:43,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 05:23:43,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:43,854 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:43,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:23:44,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:44,054 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:44,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:44,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1411513344, now seen corresponding path program 1 times [2023-11-29 05:23:44,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:44,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103671832] [2023-11-29 05:23:44,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:44,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:44,128 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-29 05:23:44,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:44,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103671832] [2023-11-29 05:23:44,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103671832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:44,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:44,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:23:44,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322235654] [2023-11-29 05:23:44,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:44,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:23:44,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:44,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:23:44,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:23:44,131 INFO L87 Difference]: Start difference. First operand 145949 states and 200106 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2023-11-29 05:23:45,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:45,528 INFO L93 Difference]: Finished difference Result 437633 states and 600056 transitions. [2023-11-29 05:23:45,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:23:45,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 150 [2023-11-29 05:23:45,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:45,808 INFO L225 Difference]: With dead ends: 437633 [2023-11-29 05:23:45,808 INFO L226 Difference]: Without dead ends: 291888 [2023-11-29 05:23:45,868 INFO L412 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 [2023-11-29 05:23:45,868 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 181 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:45,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 476 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:46,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291888 states. [2023-11-29 05:23:47,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291888 to 145952. [2023-11-29 05:23:48,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145952 states, 145951 states have (on average 1.3710765941994232) internal successors, (200110), 145951 states have internal predecessors, (200110), 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) [2023-11-29 05:23:48,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145952 states to 145952 states and 200110 transitions. [2023-11-29 05:23:48,300 INFO L78 Accepts]: Start accepts. Automaton has 145952 states and 200110 transitions. Word has length 150 [2023-11-29 05:23:48,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:48,300 INFO L495 AbstractCegarLoop]: Abstraction has 145952 states and 200110 transitions. [2023-11-29 05:23:48,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2023-11-29 05:23:48,300 INFO L276 IsEmpty]: Start isEmpty. Operand 145952 states and 200110 transitions. [2023-11-29 05:23:48,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-29 05:23:48,310 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:48,310 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:48,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 05:23:48,310 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:48,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:48,311 INFO L85 PathProgramCache]: Analyzing trace with hash -261189308, now seen corresponding path program 1 times [2023-11-29 05:23:48,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:48,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733839778] [2023-11-29 05:23:48,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:48,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 62 proven. 25 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:23:48,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:48,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733839778] [2023-11-29 05:23:48,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733839778] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:23:48,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586279568] [2023-11-29 05:23:48,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:48,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:48,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:23:48,509 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:23:48,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:23:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:48,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:23:48,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:23:48,775 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-29 05:23:48,775 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:23:48,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586279568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:48,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:23:48,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 05:23:48,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865233350] [2023-11-29 05:23:48,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:48,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:23:48,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:48,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:23:48,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:23:48,778 INFO L87 Difference]: Start difference. First operand 145952 states and 200110 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 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) [2023-11-29 05:23:49,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:49,790 INFO L93 Difference]: Finished difference Result 292300 states and 400652 transitions. [2023-11-29 05:23:49,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:23:49,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 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 151 [2023-11-29 05:23:49,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:49,948 INFO L225 Difference]: With dead ends: 292300 [2023-11-29 05:23:49,948 INFO L226 Difference]: Without dead ends: 146392 [2023-11-29 05:23:50,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:23:50,025 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 367 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:50,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 418 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:50,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146392 states. [2023-11-29 05:23:51,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146392 to 146390. [2023-11-29 05:23:51,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146390 states, 146389 states have (on average 1.3561811338283614) internal successors, (198530), 146389 states have internal predecessors, (198530), 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) [2023-11-29 05:23:52,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146390 states to 146390 states and 198530 transitions. [2023-11-29 05:23:52,107 INFO L78 Accepts]: Start accepts. Automaton has 146390 states and 198530 transitions. Word has length 151 [2023-11-29 05:23:52,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:52,108 INFO L495 AbstractCegarLoop]: Abstraction has 146390 states and 198530 transitions. [2023-11-29 05:23:52,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 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) [2023-11-29 05:23:52,108 INFO L276 IsEmpty]: Start isEmpty. Operand 146390 states and 198530 transitions. [2023-11-29 05:23:52,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-29 05:23:52,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:52,119 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:52,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:23:52,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 05:23:52,320 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:52,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:52,320 INFO L85 PathProgramCache]: Analyzing trace with hash 2005452096, now seen corresponding path program 1 times [2023-11-29 05:23:52,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:52,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2685363] [2023-11-29 05:23:52,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:52,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:52,366 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-29 05:23:52,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:52,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2685363] [2023-11-29 05:23:52,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2685363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:52,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:23:52,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:23:52,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547894481] [2023-11-29 05:23:52,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:52,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:23:52,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:52,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:23:52,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:23:52,368 INFO L87 Difference]: Start difference. First operand 146390 states and 198530 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2023-11-29 05:23:53,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:53,567 INFO L93 Difference]: Finished difference Result 438062 states and 594245 transitions. [2023-11-29 05:23:53,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:23:53,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 152 [2023-11-29 05:23:53,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:53,842 INFO L225 Difference]: With dead ends: 438062 [2023-11-29 05:23:53,842 INFO L226 Difference]: Without dead ends: 292484 [2023-11-29 05:23:53,885 INFO L412 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 [2023-11-29 05:23:53,886 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 153 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:53,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 455 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:54,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292484 states. [2023-11-29 05:23:56,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292484 to 146402. [2023-11-29 05:23:56,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146402 states, 146401 states have (on average 1.3561519388528767) internal successors, (198542), 146401 states have internal predecessors, (198542), 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) [2023-11-29 05:23:56,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146402 states to 146402 states and 198542 transitions. [2023-11-29 05:23:56,506 INFO L78 Accepts]: Start accepts. Automaton has 146402 states and 198542 transitions. Word has length 152 [2023-11-29 05:23:56,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:56,506 INFO L495 AbstractCegarLoop]: Abstraction has 146402 states and 198542 transitions. [2023-11-29 05:23:56,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2023-11-29 05:23:56,506 INFO L276 IsEmpty]: Start isEmpty. Operand 146402 states and 198542 transitions. [2023-11-29 05:23:56,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-29 05:23:56,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:56,515 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:56,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 05:23:56,515 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:56,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:56,516 INFO L85 PathProgramCache]: Analyzing trace with hash -601410683, now seen corresponding path program 1 times [2023-11-29 05:23:56,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:56,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735625622] [2023-11-29 05:23:56,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:56,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:56,710 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 62 proven. 25 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:23:56,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:56,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735625622] [2023-11-29 05:23:56,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735625622] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:23:56,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461083765] [2023-11-29 05:23:56,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:56,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:56,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:23:56,712 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:23:56,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:23:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:56,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:23:56,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:23:56,908 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-29 05:23:56,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:23:56,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461083765] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:23:56,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:23:56,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 05:23:56,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058558263] [2023-11-29 05:23:56,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:23:56,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:23:56,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:23:56,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:23:56,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:23:56,910 INFO L87 Difference]: Start difference. First operand 146402 states and 198542 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:57,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:23:57,748 INFO L93 Difference]: Finished difference Result 292794 states and 397068 transitions. [2023-11-29 05:23:57,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:23:57,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2023-11-29 05:23:57,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:23:57,889 INFO L225 Difference]: With dead ends: 292794 [2023-11-29 05:23:57,890 INFO L226 Difference]: Without dead ends: 146399 [2023-11-29 05:23:57,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:23:57,940 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 65 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:23:57,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 603 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:23:58,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146399 states. [2023-11-29 05:23:59,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146399 to 146399. [2023-11-29 05:23:59,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146399 states, 146398 states have (on average 1.356131914370415) internal successors, (198535), 146398 states have internal predecessors, (198535), 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) [2023-11-29 05:23:59,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146399 states to 146399 states and 198535 transitions. [2023-11-29 05:23:59,507 INFO L78 Accepts]: Start accepts. Automaton has 146399 states and 198535 transitions. Word has length 153 [2023-11-29 05:23:59,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:23:59,507 INFO L495 AbstractCegarLoop]: Abstraction has 146399 states and 198535 transitions. [2023-11-29 05:23:59,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:23:59,507 INFO L276 IsEmpty]: Start isEmpty. Operand 146399 states and 198535 transitions. [2023-11-29 05:23:59,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-29 05:23:59,514 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:23:59,514 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:23:59,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:23:59,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:59,715 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:23:59,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:23:59,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1263544843, now seen corresponding path program 1 times [2023-11-29 05:23:59,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:23:59,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604714460] [2023-11-29 05:23:59,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:59,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:23:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:23:59,857 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 62 proven. 25 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:23:59,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:23:59,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604714460] [2023-11-29 05:23:59,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604714460] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:23:59,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815183516] [2023-11-29 05:23:59,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:23:59,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:23:59,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:23:59,858 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:23:59,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:24:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:00,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:24:00,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:24:00,094 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-29 05:24:00,094 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:24:00,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815183516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:24:00,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:24:00,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 05:24:00,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682621335] [2023-11-29 05:24:00,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:24:00,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:24:00,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:24:00,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:24:00,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:24:00,096 INFO L87 Difference]: Start difference. First operand 146399 states and 198535 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 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) [2023-11-29 05:24:01,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:24:01,348 INFO L93 Difference]: Finished difference Result 363266 states and 491367 transitions. [2023-11-29 05:24:01,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:24:01,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 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 153 [2023-11-29 05:24:01,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:24:01,570 INFO L225 Difference]: With dead ends: 363266 [2023-11-29 05:24:01,570 INFO L226 Difference]: Without dead ends: 217452 [2023-11-29 05:24:01,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:24:01,649 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 379 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:24:01,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 445 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:24:01,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217452 states. [2023-11-29 05:24:03,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217452 to 217450. [2023-11-29 05:24:03,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217450 states, 217449 states have (on average 1.3340921319481809) internal successors, (290097), 217449 states have internal predecessors, (290097), 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) [2023-11-29 05:24:04,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217450 states to 217450 states and 290097 transitions. [2023-11-29 05:24:04,253 INFO L78 Accepts]: Start accepts. Automaton has 217450 states and 290097 transitions. Word has length 153 [2023-11-29 05:24:04,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:24:04,253 INFO L495 AbstractCegarLoop]: Abstraction has 217450 states and 290097 transitions. [2023-11-29 05:24:04,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 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) [2023-11-29 05:24:04,253 INFO L276 IsEmpty]: Start isEmpty. Operand 217450 states and 290097 transitions. [2023-11-29 05:24:04,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 05:24:04,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:24:04,266 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:24:04,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 05:24:04,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-29 05:24:04,467 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:24:04,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:24:04,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1909309584, now seen corresponding path program 1 times [2023-11-29 05:24:04,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:24:04,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681259070] [2023-11-29 05:24:04,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:24:04,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:24:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:04,541 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-29 05:24:04,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:24:04,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681259070] [2023-11-29 05:24:04,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681259070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:24:04,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:24:04,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:24:04,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51624534] [2023-11-29 05:24:04,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:24:04,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:24:04,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:24:04,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:24:04,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:24:04,543 INFO L87 Difference]: Start difference. First operand 217450 states and 290097 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2023-11-29 05:24:06,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:24:06,027 INFO L93 Difference]: Finished difference Result 567452 states and 754584 transitions. [2023-11-29 05:24:06,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:24:06,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 161 [2023-11-29 05:24:06,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:24:06,912 INFO L225 Difference]: With dead ends: 567452 [2023-11-29 05:24:06,912 INFO L226 Difference]: Without dead ends: 351770 [2023-11-29 05:24:06,980 INFO L412 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 [2023-11-29 05:24:06,980 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 115 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:24:06,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 483 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:24:07,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351770 states. [2023-11-29 05:24:10,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351770 to 351768. [2023-11-29 05:24:10,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351768 states, 351767 states have (on average 1.308894808211117) internal successors, (460426), 351767 states have internal predecessors, (460426), 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) [2023-11-29 05:24:11,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351768 states to 351768 states and 460426 transitions. [2023-11-29 05:24:11,035 INFO L78 Accepts]: Start accepts. Automaton has 351768 states and 460426 transitions. Word has length 161 [2023-11-29 05:24:11,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:24:11,035 INFO L495 AbstractCegarLoop]: Abstraction has 351768 states and 460426 transitions. [2023-11-29 05:24:11,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2023-11-29 05:24:11,035 INFO L276 IsEmpty]: Start isEmpty. Operand 351768 states and 460426 transitions. [2023-11-29 05:24:11,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 05:24:11,053 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:24:11,054 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:24:11,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-29 05:24:11,054 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:24:11,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:24:11,054 INFO L85 PathProgramCache]: Analyzing trace with hash 95487837, now seen corresponding path program 1 times [2023-11-29 05:24:11,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:24:11,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744823370] [2023-11-29 05:24:11,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:24:11,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:24:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 60 proven. 31 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:24:11,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:24:11,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744823370] [2023-11-29 05:24:11,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744823370] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:24:11,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092872776] [2023-11-29 05:24:11,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:24:11,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:24:11,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:24:11,214 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:24:11,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:24:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:11,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:24:11,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:24:11,406 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-29 05:24:11,406 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:24:11,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092872776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:24:11,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:24:11,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-29 05:24:11,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624849197] [2023-11-29 05:24:11,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:24:11,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:24:11,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:24:11,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:24:11,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:24:11,408 INFO L87 Difference]: Start difference. First operand 351768 states and 460426 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2023-11-29 05:24:13,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:24:13,117 INFO L93 Difference]: Finished difference Result 566761 states and 741435 transitions. [2023-11-29 05:24:13,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:24:13,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 161 [2023-11-29 05:24:13,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:24:13,402 INFO L225 Difference]: With dead ends: 566761 [2023-11-29 05:24:13,402 INFO L226 Difference]: Without dead ends: 286683 [2023-11-29 05:24:13,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:24:13,505 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 53 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:24:13,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 589 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:24:13,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286683 states. [2023-11-29 05:24:16,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286683 to 286683. [2023-11-29 05:24:16,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286683 states, 286682 states have (on average 1.3070161363461954) internal successors, (374698), 286682 states have internal predecessors, (374698), 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) [2023-11-29 05:24:16,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286683 states to 286683 states and 374698 transitions. [2023-11-29 05:24:16,785 INFO L78 Accepts]: Start accepts. Automaton has 286683 states and 374698 transitions. Word has length 161 [2023-11-29 05:24:16,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:24:16,785 INFO L495 AbstractCegarLoop]: Abstraction has 286683 states and 374698 transitions. [2023-11-29 05:24:16,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2023-11-29 05:24:16,786 INFO L276 IsEmpty]: Start isEmpty. Operand 286683 states and 374698 transitions. [2023-11-29 05:24:16,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-11-29 05:24:16,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:24:16,800 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:24:16,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 05:24:17,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:24:17,001 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:24:17,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:24:17,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1949999978, now seen corresponding path program 1 times [2023-11-29 05:24:17,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:24:17,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719062098] [2023-11-29 05:24:17,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:24:17,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:24:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:17,105 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-29 05:24:17,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:24:17,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719062098] [2023-11-29 05:24:17,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719062098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:24:17,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:24:17,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:24:17,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603726698] [2023-11-29 05:24:17,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:24:17,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:24:17,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:24:17,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:24:17,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:24:17,108 INFO L87 Difference]: Start difference. First operand 286683 states and 374698 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 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) [2023-11-29 05:24:18,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:24:18,804 INFO L93 Difference]: Finished difference Result 571696 states and 747439 transitions. [2023-11-29 05:24:18,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:24:18,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 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 164 [2023-11-29 05:24:18,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:24:19,126 INFO L225 Difference]: With dead ends: 571696 [2023-11-29 05:24:19,126 INFO L226 Difference]: Without dead ends: 286683 [2023-11-29 05:24:19,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:24:19,244 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 396 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:24:19,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 238 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:24:19,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286683 states. [2023-11-29 05:24:22,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286683 to 286683. [2023-11-29 05:24:22,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286683 states, 286682 states have (on average 1.2879915725437943) internal successors, (369244), 286682 states have internal predecessors, (369244), 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) [2023-11-29 05:24:22,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286683 states to 286683 states and 369244 transitions. [2023-11-29 05:24:22,610 INFO L78 Accepts]: Start accepts. Automaton has 286683 states and 369244 transitions. Word has length 164 [2023-11-29 05:24:22,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:24:22,610 INFO L495 AbstractCegarLoop]: Abstraction has 286683 states and 369244 transitions. [2023-11-29 05:24:22,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 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) [2023-11-29 05:24:22,610 INFO L276 IsEmpty]: Start isEmpty. Operand 286683 states and 369244 transitions. [2023-11-29 05:24:22,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-11-29 05:24:22,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:24:22,624 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:24:22,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-29 05:24:22,624 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:24:22,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:24:22,625 INFO L85 PathProgramCache]: Analyzing trace with hash -914886449, now seen corresponding path program 1 times [2023-11-29 05:24:22,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:24:22,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245234739] [2023-11-29 05:24:22,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:24:22,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:24:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:22,830 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 61 proven. 31 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 05:24:22,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:24:22,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245234739] [2023-11-29 05:24:22,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245234739] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:24:22,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265937256] [2023-11-29 05:24:22,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:24:22,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:24:22,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:24:22,832 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:24:22,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:24:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:22,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:24:23,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:24:23,091 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-29 05:24:23,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:24:23,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265937256] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:24:23,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:24:23,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 05:24:23,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717997243] [2023-11-29 05:24:23,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:24:23,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:24:23,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:24:23,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:24:23,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:24:23,093 INFO L87 Difference]: Start difference. First operand 286683 states and 369244 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 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) [2023-11-29 05:24:24,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:24:24,349 INFO L93 Difference]: Finished difference Result 374389 states and 480794 transitions. [2023-11-29 05:24:24,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:24:24,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 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 164 [2023-11-29 05:24:24,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:24:24,595 INFO L225 Difference]: With dead ends: 374389 [2023-11-29 05:24:24,595 INFO L226 Difference]: Without dead ends: 239350 [2023-11-29 05:24:24,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:24:24,663 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 361 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:24:24,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 423 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:24:24,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239350 states. [2023-11-29 05:24:26,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239350 to 239348. [2023-11-29 05:24:26,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239348 states, 239347 states have (on average 1.2749063075785365) internal successors, (305145), 239347 states have internal predecessors, (305145), 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) [2023-11-29 05:24:27,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239348 states to 239348 states and 305145 transitions. [2023-11-29 05:24:27,285 INFO L78 Accepts]: Start accepts. Automaton has 239348 states and 305145 transitions. Word has length 164 [2023-11-29 05:24:27,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:24:27,285 INFO L495 AbstractCegarLoop]: Abstraction has 239348 states and 305145 transitions. [2023-11-29 05:24:27,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 3 states have internal predecessors, (116), 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) [2023-11-29 05:24:27,285 INFO L276 IsEmpty]: Start isEmpty. Operand 239348 states and 305145 transitions. [2023-11-29 05:24:27,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-29 05:24:27,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:24:27,298 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:24:27,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:24:27,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:24:27,499 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:24:27,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:24:27,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1242088500, now seen corresponding path program 1 times [2023-11-29 05:24:27,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:24:27,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609796029] [2023-11-29 05:24:27,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:24:27,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:24:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:27,588 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-29 05:24:27,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:24:27,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609796029] [2023-11-29 05:24:27,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609796029] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:24:27,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:24:27,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:24:27,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791665004] [2023-11-29 05:24:27,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:24:27,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:24:27,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:24:27,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:24:27,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:24:27,590 INFO L87 Difference]: Start difference. First operand 239348 states and 305145 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 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) [2023-11-29 05:24:28,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:24:28,987 INFO L93 Difference]: Finished difference Result 476969 states and 608358 transitions. [2023-11-29 05:24:28,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:24:28,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 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 166 [2023-11-29 05:24:28,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:24:29,225 INFO L225 Difference]: With dead ends: 476969 [2023-11-29 05:24:29,225 INFO L226 Difference]: Without dead ends: 239348 [2023-11-29 05:24:29,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:24:29,316 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 398 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:24:29,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 236 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:24:29,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239348 states. [2023-11-29 05:24:31,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239348 to 239348. [2023-11-29 05:24:31,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239348 states, 239347 states have (on average 1.2571204151294981) internal successors, (300888), 239347 states have internal predecessors, (300888), 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) [2023-11-29 05:24:32,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239348 states to 239348 states and 300888 transitions. [2023-11-29 05:24:32,084 INFO L78 Accepts]: Start accepts. Automaton has 239348 states and 300888 transitions. Word has length 166 [2023-11-29 05:24:32,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:24:32,085 INFO L495 AbstractCegarLoop]: Abstraction has 239348 states and 300888 transitions. [2023-11-29 05:24:32,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 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) [2023-11-29 05:24:32,085 INFO L276 IsEmpty]: Start isEmpty. Operand 239348 states and 300888 transitions. [2023-11-29 05:24:32,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-29 05:24:32,098 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:24:32,098 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:24:32,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-29 05:24:32,098 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:24:32,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:24:32,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1953664450, now seen corresponding path program 1 times [2023-11-29 05:24:32,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:24:32,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322778859] [2023-11-29 05:24:32,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:24:32,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:24:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:33,075 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 35 proven. 61 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 05:24:33,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:24:33,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322778859] [2023-11-29 05:24:33,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322778859] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:24:33,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475960921] [2023-11-29 05:24:33,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:24:33,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:24:33,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:24:33,077 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:24:33,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab41a7b-a133-469d-9148-727cb5912719/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:24:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:24:33,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:24:33,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:24:33,418 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 05:24:33,418 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:24:33,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475960921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:24:33,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:24:33,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2023-11-29 05:24:33,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830140882] [2023-11-29 05:24:33,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:24:33,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:24:33,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:24:33,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:24:33,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:24:33,421 INFO L87 Difference]: Start difference. First operand 239348 states and 300888 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-11-29 05:24:35,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:24:35,323 INFO L93 Difference]: Finished difference Result 816956 states and 1032687 transitions. [2023-11-29 05:24:35,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:24:35,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 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 166 [2023-11-29 05:24:35,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:24:36,060 INFO L225 Difference]: With dead ends: 816956 [2023-11-29 05:24:36,060 INFO L226 Difference]: Without dead ends: 669578 [2023-11-29 05:24:36,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:24:36,190 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 255 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:24:36,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 775 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:24:36,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669578 states. [2023-11-29 05:24:40,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669578 to 407342. [2023-11-29 05:24:41,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407342 states, 407341 states have (on average 1.2623133934467683) internal successors, (514192), 407341 states have internal predecessors, (514192), 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)