./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label39.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/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_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label39.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/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_84b0d7a5-3498-4127-b9c7-01c0446730df/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 458d694afbb3bfd6aed28352ce176f8d7e28b3da8c081e4ca83ee27f62e7ab73 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:29:49,471 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:29:49,529 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:29:49,533 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:29:49,533 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:29:49,554 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:29:49,555 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:29:49,555 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:29:49,556 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:29:49,556 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:29:49,557 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:29:49,557 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:29:49,558 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:29:49,558 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:29:49,559 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:29:49,560 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:29:49,560 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:29:49,561 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:29:49,561 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:29:49,562 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:29:49,562 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:29:49,564 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:29:49,564 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:29:49,565 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:29:49,565 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:29:49,566 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:29:49,566 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:29:49,567 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:29:49,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:29:49,567 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:29:49,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:29:49,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:29:49,568 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:29:49,569 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:29:49,569 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:29:49,569 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:29:49,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:29:49,569 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:29:49,569 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:29:49,570 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:29:49,570 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:29:49,570 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:29:49,570 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_84b0d7a5-3498-4127-b9c7-01c0446730df/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 458d694afbb3bfd6aed28352ce176f8d7e28b3da8c081e4ca83ee27f62e7ab73 [2023-11-29 06:29:49,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:29:49,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:29:49,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:29:49,816 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:29:49,817 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:29:49,818 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/eca-rers2012/Problem13_label39.c [2023-11-29 06:29:52,611 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:29:53,050 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:29:53,050 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/sv-benchmarks/c/eca-rers2012/Problem13_label39.c [2023-11-29 06:29:53,084 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/data/e053ab163/8c4612be1836453a8892dccbd9150aa9/FLAG5efa92e0f [2023-11-29 06:29:53,098 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/data/e053ab163/8c4612be1836453a8892dccbd9150aa9 [2023-11-29 06:29:53,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:29:53,103 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:29:53,104 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:29:53,105 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:29:53,111 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:29:53,112 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:29:53" (1/1) ... [2023-11-29 06:29:53,113 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e3c20d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:53, skipping insertion in model container [2023-11-29 06:29:53,113 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:29:53" (1/1) ... [2023-11-29 06:29:53,266 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:29:53,563 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_84b0d7a5-3498-4127-b9c7-01c0446730df/sv-benchmarks/c/eca-rers2012/Problem13_label39.c[7279,7292] [2023-11-29 06:29:54,697 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:29:54,711 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:29:54,763 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_84b0d7a5-3498-4127-b9c7-01c0446730df/sv-benchmarks/c/eca-rers2012/Problem13_label39.c[7279,7292] [2023-11-29 06:29:55,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:29:55,447 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:29:55,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:55 WrapperNode [2023-11-29 06:29:55,448 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:29:55,449 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:29:55,449 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:29:55,449 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:29:55,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:55" (1/1) ... [2023-11-29 06:29:55,520 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:55" (1/1) ... [2023-11-29 06:29:56,012 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5584 [2023-11-29 06:29:56,013 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:29:56,013 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:29:56,014 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:29:56,014 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:29:56,028 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:55" (1/1) ... [2023-11-29 06:29:56,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:55" (1/1) ... [2023-11-29 06:29:56,115 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:55" (1/1) ... [2023-11-29 06:29:56,327 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 06:29:56,328 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:55" (1/1) ... [2023-11-29 06:29:56,328 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:55" (1/1) ... [2023-11-29 06:29:56,474 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:55" (1/1) ... [2023-11-29 06:29:56,507 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:55" (1/1) ... [2023-11-29 06:29:56,535 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:55" (1/1) ... [2023-11-29 06:29:56,552 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:55" (1/1) ... [2023-11-29 06:29:56,600 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:29:56,601 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:29:56,601 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:29:56,602 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:29:56,602 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:55" (1/1) ... [2023-11-29 06:29:56,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:29:56,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:29:56,631 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:29:56,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:29:56,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:29:56,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:29:56,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:29:56,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:29:56,736 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:29:56,739 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:30:02,849 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:30:02,914 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:30:02,914 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 06:30:02,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:30:02 BoogieIcfgContainer [2023-11-29 06:30:02,915 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:30:02,918 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:30:02,918 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:30:02,920 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:30:02,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:29:53" (1/3) ... [2023-11-29 06:30:02,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b6951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:30:02, skipping insertion in model container [2023-11-29 06:30:02,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:29:55" (2/3) ... [2023-11-29 06:30:02,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b6951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:30:02, skipping insertion in model container [2023-11-29 06:30:02,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:30:02" (3/3) ... [2023-11-29 06:30:02,923 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label39.c [2023-11-29 06:30:02,938 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:30:02,938 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 06:30:03,004 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:30:03,010 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;@3fac04fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:30:03,011 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 06:30:03,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 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 06:30:03,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 06:30:03,026 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:30:03,027 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] [2023-11-29 06:30:03,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:30:03,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:30:03,033 INFO L85 PathProgramCache]: Analyzing trace with hash 806659176, now seen corresponding path program 1 times [2023-11-29 06:30:03,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:30:03,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066402671] [2023-11-29 06:30:03,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:30:03,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:30:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:03,191 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 06:30:03,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:30:03,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066402671] [2023-11-29 06:30:03,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066402671] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:30:03,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:30:03,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:30:03,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714271402] [2023-11-29 06:30:03,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:30:03,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 06:30:03,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:30:03,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 06:30:03,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:30:03,228 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:30:03,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:30:03,330 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-11-29 06:30:03,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:30:03,332 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-29 06:30:03,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:30:03,354 INFO L225 Difference]: With dead ends: 2071 [2023-11-29 06:30:03,354 INFO L226 Difference]: Without dead ends: 1034 [2023-11-29 06:30:03,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:30:03,365 INFO L413 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:30:03,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:30:03,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-11-29 06:30:03,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-11-29 06:30:03,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 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 06:30:03,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-11-29 06:30:03,460 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 50 [2023-11-29 06:30:03,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:30:03,460 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-11-29 06:30:03,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:30:03,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-11-29 06:30:03,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 06:30:03,462 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:30:03,462 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] [2023-11-29 06:30:03,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:30:03,463 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:30:03,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:30:03,463 INFO L85 PathProgramCache]: Analyzing trace with hash 762753816, now seen corresponding path program 1 times [2023-11-29 06:30:03,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:30:03,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607733291] [2023-11-29 06:30:03,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:30:03,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:30:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:03,640 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 06:30:03,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:30:03,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607733291] [2023-11-29 06:30:03,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607733291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:30:03,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:30:03,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:30:03,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335231530] [2023-11-29 06:30:03,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:30:03,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:30:03,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:30:03,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:30:03,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:30:03,645 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:30:08,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:30:08,553 INFO L93 Difference]: Finished difference Result 3015 states and 5510 transitions. [2023-11-29 06:30:08,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:30:08,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-29 06:30:08,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:30:08,564 INFO L225 Difference]: With dead ends: 3015 [2023-11-29 06:30:08,564 INFO L226 Difference]: Without dead ends: 1982 [2023-11-29 06:30:08,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 06:30:08,567 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 1004 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2956 mSolverCounterSat, 929 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 3885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 929 IncrementalHoareTripleChecker+Valid, 2956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:30:08,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 317 Invalid, 3885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [929 Valid, 2956 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-29 06:30:08,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2023-11-29 06:30:08,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1929. [2023-11-29 06:30:08,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1928 states have (on average 1.7977178423236515) internal successors, (3466), 1928 states have internal predecessors, (3466), 0 states have call successors, (0), 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 06:30:08,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 3466 transitions. [2023-11-29 06:30:08,614 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 3466 transitions. Word has length 50 [2023-11-29 06:30:08,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:30:08,614 INFO L495 AbstractCegarLoop]: Abstraction has 1929 states and 3466 transitions. [2023-11-29 06:30:08,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:30:08,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 3466 transitions. [2023-11-29 06:30:08,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 06:30:08,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:30:08,619 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:30:08,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:30:08,620 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:30:08,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:30:08,620 INFO L85 PathProgramCache]: Analyzing trace with hash 2077161059, now seen corresponding path program 1 times [2023-11-29 06:30:08,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:30:08,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995876154] [2023-11-29 06:30:08,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:30:08,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:30:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:08,881 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:30:08,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:30:08,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995876154] [2023-11-29 06:30:08,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995876154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:30:08,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:30:08,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:30:08,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292021550] [2023-11-29 06:30:08,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:30:08,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:30:08,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:30:08,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:30:08,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:30:08,885 INFO L87 Difference]: Start difference. First operand 1929 states and 3466 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:30:12,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:30:12,471 INFO L93 Difference]: Finished difference Result 5455 states and 9916 transitions. [2023-11-29 06:30:12,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:30:12,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-11-29 06:30:12,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:30:12,492 INFO L225 Difference]: With dead ends: 5455 [2023-11-29 06:30:12,492 INFO L226 Difference]: Without dead ends: 3527 [2023-11-29 06:30:12,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 06:30:12,497 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 3188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:30:12,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1005 Invalid, 3188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 06:30:12,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2023-11-29 06:30:12,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 3525. [2023-11-29 06:30:12,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3525 states, 3524 states have (on average 1.5672531214528944) internal successors, (5523), 3524 states have internal predecessors, (5523), 0 states have call successors, (0), 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 06:30:12,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 5523 transitions. [2023-11-29 06:30:12,564 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 5523 transitions. Word has length 115 [2023-11-29 06:30:12,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:30:12,564 INFO L495 AbstractCegarLoop]: Abstraction has 3525 states and 5523 transitions. [2023-11-29 06:30:12,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:30:12,565 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 5523 transitions. [2023-11-29 06:30:12,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 06:30:12,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:30:12,569 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:30:12,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:30:12,569 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:30:12,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:30:12,570 INFO L85 PathProgramCache]: Analyzing trace with hash -763472718, now seen corresponding path program 1 times [2023-11-29 06:30:12,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:30:12,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679166925] [2023-11-29 06:30:12,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:30:12,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:30:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:30:12,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:30:12,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679166925] [2023-11-29 06:30:12,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679166925] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:30:12,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:30:12,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:30:12,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104884381] [2023-11-29 06:30:12,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:30:12,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:30:12,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:30:12,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:30:12,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:30:12,723 INFO L87 Difference]: Start difference. First operand 3525 states and 5523 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 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 06:30:16,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:30:16,396 INFO L93 Difference]: Finished difference Result 10233 states and 16097 transitions. [2023-11-29 06:30:16,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:30:16,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2023-11-29 06:30:16,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:30:16,423 INFO L225 Difference]: With dead ends: 10233 [2023-11-29 06:30:16,423 INFO L226 Difference]: Without dead ends: 6709 [2023-11-29 06:30:16,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 06:30:16,428 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 973 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2536 mSolverCounterSat, 774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 774 IncrementalHoareTripleChecker+Valid, 2536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:30:16,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 850 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [774 Valid, 2536 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 06:30:16,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6709 states. [2023-11-29 06:30:16,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6709 to 6699. [2023-11-29 06:30:16,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6699 states, 6698 states have (on average 1.4131083905643476) internal successors, (9465), 6698 states have internal predecessors, (9465), 0 states have call successors, (0), 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 06:30:16,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6699 states to 6699 states and 9465 transitions. [2023-11-29 06:30:16,587 INFO L78 Accepts]: Start accepts. Automaton has 6699 states and 9465 transitions. Word has length 121 [2023-11-29 06:30:16,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:30:16,587 INFO L495 AbstractCegarLoop]: Abstraction has 6699 states and 9465 transitions. [2023-11-29 06:30:16,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 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 06:30:16,588 INFO L276 IsEmpty]: Start isEmpty. Operand 6699 states and 9465 transitions. [2023-11-29 06:30:16,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-29 06:30:16,591 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:30:16,591 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:30:16,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 06:30:16,591 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:30:16,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:30:16,592 INFO L85 PathProgramCache]: Analyzing trace with hash 315948093, now seen corresponding path program 1 times [2023-11-29 06:30:16,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:30:16,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192163839] [2023-11-29 06:30:16,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:30:16,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:30:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:16,760 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:30:16,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:30:16,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192163839] [2023-11-29 06:30:16,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192163839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:30:16,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:30:16,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:30:16,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776952965] [2023-11-29 06:30:16,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:30:16,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:30:16,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:30:16,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:30:16,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:30:16,763 INFO L87 Difference]: Start difference. First operand 6699 states and 9465 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 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 06:30:21,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:30:21,229 INFO L93 Difference]: Finished difference Result 17442 states and 24478 transitions. [2023-11-29 06:30:21,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:30:21,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 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 151 [2023-11-29 06:30:21,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:30:21,269 INFO L225 Difference]: With dead ends: 17442 [2023-11-29 06:30:21,269 INFO L226 Difference]: Without dead ends: 10744 [2023-11-29 06:30:21,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 06:30:21,280 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3292 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 3742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:30:21,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 963 Invalid, 3742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3292 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-29 06:30:21,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10744 states. [2023-11-29 06:30:21,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10744 to 10668. [2023-11-29 06:30:21,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10668 states, 10667 states have (on average 1.3563326146057935) internal successors, (14468), 10667 states have internal predecessors, (14468), 0 states have call successors, (0), 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 06:30:21,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 14468 transitions. [2023-11-29 06:30:21,499 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 14468 transitions. Word has length 151 [2023-11-29 06:30:21,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:30:21,500 INFO L495 AbstractCegarLoop]: Abstraction has 10668 states and 14468 transitions. [2023-11-29 06:30:21,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 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 06:30:21,500 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 14468 transitions. [2023-11-29 06:30:21,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 06:30:21,503 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:30:21,503 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:30:21,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 06:30:21,503 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:30:21,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:30:21,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1310825622, now seen corresponding path program 1 times [2023-11-29 06:30:21,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:30:21,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628843686] [2023-11-29 06:30:21,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:30:21,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:30:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:30:21,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:30:21,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628843686] [2023-11-29 06:30:21,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628843686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:30:21,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:30:21,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:30:21,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67366957] [2023-11-29 06:30:21,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:30:21,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:30:21,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:30:21,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:30:21,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:30:21,907 INFO L87 Difference]: Start difference. First operand 10668 states and 14468 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 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 06:30:25,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:30:25,157 INFO L93 Difference]: Finished difference Result 20548 states and 28118 transitions. [2023-11-29 06:30:25,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:30:25,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 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 06:30:25,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:30:25,182 INFO L225 Difference]: With dead ends: 20548 [2023-11-29 06:30:25,183 INFO L226 Difference]: Without dead ends: 10668 [2023-11-29 06:30:25,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 06:30:25,192 INFO L413 NwaCegarLoop]: 1081 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 2545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:30:25,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1210 Invalid, 2545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 06:30:25,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10668 states. [2023-11-29 06:30:25,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10668 to 10668. [2023-11-29 06:30:25,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10668 states, 10667 states have (on average 1.3539889378456924) internal successors, (14443), 10667 states have internal predecessors, (14443), 0 states have call successors, (0), 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 06:30:25,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 14443 transitions. [2023-11-29 06:30:25,320 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 14443 transitions. Word has length 161 [2023-11-29 06:30:25,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:30:25,321 INFO L495 AbstractCegarLoop]: Abstraction has 10668 states and 14443 transitions. [2023-11-29 06:30:25,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 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 06:30:25,321 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 14443 transitions. [2023-11-29 06:30:25,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-29 06:30:25,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:30:25,324 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:30:25,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 06:30:25,324 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:30:25,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:30:25,325 INFO L85 PathProgramCache]: Analyzing trace with hash -387923584, now seen corresponding path program 1 times [2023-11-29 06:30:25,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:30:25,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543470982] [2023-11-29 06:30:25,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:30:25,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:30:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:25,521 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:30:25,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:30:25,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543470982] [2023-11-29 06:30:25,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543470982] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:30:25,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022024037] [2023-11-29 06:30:25,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:30:25,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:30:25,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:30:25,526 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:30:25,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:30:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:25,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:30:25,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:30:25,990 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:30:25,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:30:27,130 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:30:27,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022024037] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:30:27,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:30:27,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-29 06:30:27,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847376141] [2023-11-29 06:30:27,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:30:27,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:30:27,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:30:27,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:30:27,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:30:27,134 INFO L87 Difference]: Start difference. First operand 10668 states and 14443 transitions. Second operand has 6 states, 6 states have (on average 58.166666666666664) internal successors, (349), 5 states have internal predecessors, (349), 0 states have call successors, (0), 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 06:30:41,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:30:41,748 INFO L93 Difference]: Finished difference Result 57153 states and 77637 transitions. [2023-11-29 06:30:41,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:30:41,748 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 58.166666666666664) internal successors, (349), 5 states have internal predecessors, (349), 0 states have call successors, (0), 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 175 [2023-11-29 06:30:41,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:30:41,816 INFO L225 Difference]: With dead ends: 57153 [2023-11-29 06:30:41,817 INFO L226 Difference]: Without dead ends: 47273 [2023-11-29 06:30:41,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:30:41,829 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 8681 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 8475 mSolverCounterSat, 4985 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8681 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 13460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4985 IncrementalHoareTripleChecker+Valid, 8475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:30:41,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8681 Valid, 945 Invalid, 13460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4985 Valid, 8475 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2023-11-29 06:30:41,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47273 states. [2023-11-29 06:30:42,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47273 to 24090. [2023-11-29 06:30:42,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24090 states, 24089 states have (on average 1.2878492257877039) internal successors, (31023), 24089 states have internal predecessors, (31023), 0 states have call successors, (0), 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 06:30:42,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24090 states to 24090 states and 31023 transitions. [2023-11-29 06:30:42,349 INFO L78 Accepts]: Start accepts. Automaton has 24090 states and 31023 transitions. Word has length 175 [2023-11-29 06:30:42,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:30:42,349 INFO L495 AbstractCegarLoop]: Abstraction has 24090 states and 31023 transitions. [2023-11-29 06:30:42,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.166666666666664) internal successors, (349), 5 states have internal predecessors, (349), 0 states have call successors, (0), 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 06:30:42,350 INFO L276 IsEmpty]: Start isEmpty. Operand 24090 states and 31023 transitions. [2023-11-29 06:30:42,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-11-29 06:30:42,352 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:30:42,353 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:30:42,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:30:42,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:30:42,554 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:30:42,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:30:42,554 INFO L85 PathProgramCache]: Analyzing trace with hash 567290175, now seen corresponding path program 1 times [2023-11-29 06:30:42,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:30:42,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583056461] [2023-11-29 06:30:42,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:30:42,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:30:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:42,746 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:30:42,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:30:42,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583056461] [2023-11-29 06:30:42,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583056461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:30:42,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:30:42,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:30:42,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15319243] [2023-11-29 06:30:42,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:30:42,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:30:42,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:30:42,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:30:42,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:30:42,749 INFO L87 Difference]: Start difference. First operand 24090 states and 31023 transitions. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 06:30:50,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:30:50,441 INFO L93 Difference]: Finished difference Result 66523 states and 87194 transitions. [2023-11-29 06:30:50,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:30:50,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 247 [2023-11-29 06:30:50,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:30:50,491 INFO L225 Difference]: With dead ends: 66523 [2023-11-29 06:30:50,491 INFO L226 Difference]: Without dead ends: 43221 [2023-11-29 06:30:50,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 06:30:50,509 INFO L413 NwaCegarLoop]: 1020 mSDtfsCounter, 1727 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 6225 mSolverCounterSat, 994 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 7219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 994 IncrementalHoareTripleChecker+Valid, 6225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:30:50,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1727 Valid, 1222 Invalid, 7219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [994 Valid, 6225 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-11-29 06:30:50,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43221 states. [2023-11-29 06:30:50,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43221 to 31195. [2023-11-29 06:30:50,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31195 states, 31194 states have (on average 1.263896903250625) internal successors, (39426), 31194 states have internal predecessors, (39426), 0 states have call successors, (0), 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 06:30:50,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31195 states to 31195 states and 39426 transitions. [2023-11-29 06:30:50,887 INFO L78 Accepts]: Start accepts. Automaton has 31195 states and 39426 transitions. Word has length 247 [2023-11-29 06:30:50,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:30:50,887 INFO L495 AbstractCegarLoop]: Abstraction has 31195 states and 39426 transitions. [2023-11-29 06:30:50,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 06:30:50,888 INFO L276 IsEmpty]: Start isEmpty. Operand 31195 states and 39426 transitions. [2023-11-29 06:30:50,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-11-29 06:30:50,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:30:50,891 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:30:50,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 06:30:50,892 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:30:50,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:30:50,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1382420755, now seen corresponding path program 1 times [2023-11-29 06:30:50,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:30:50,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134003728] [2023-11-29 06:30:50,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:30:50,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:30:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:51,150 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-29 06:30:51,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:30:51,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134003728] [2023-11-29 06:30:51,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134003728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:30:51,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:30:51,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:30:51,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704852772] [2023-11-29 06:30:51,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:30:51,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:30:51,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:30:51,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:30:51,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:30:51,153 INFO L87 Difference]: Start difference. First operand 31195 states and 39426 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 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 06:30:54,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:30:54,931 INFO L93 Difference]: Finished difference Result 55307 states and 71091 transitions. [2023-11-29 06:30:54,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:30:54,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 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 262 [2023-11-29 06:30:54,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:30:54,965 INFO L225 Difference]: With dead ends: 55307 [2023-11-29 06:30:54,965 INFO L226 Difference]: Without dead ends: 31209 [2023-11-29 06:30:54,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 06:30:54,979 INFO L413 NwaCegarLoop]: 1025 mSDtfsCounter, 730 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2712 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 2716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:30:54,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1209 Invalid, 2716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2712 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 06:30:55,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31209 states. [2023-11-29 06:30:55,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31209 to 31195. [2023-11-29 06:30:55,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31195 states, 31194 states have (on average 1.2626146053728282) internal successors, (39386), 31194 states have internal predecessors, (39386), 0 states have call successors, (0), 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 06:30:55,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31195 states to 31195 states and 39386 transitions. [2023-11-29 06:30:55,304 INFO L78 Accepts]: Start accepts. Automaton has 31195 states and 39386 transitions. Word has length 262 [2023-11-29 06:30:55,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:30:55,304 INFO L495 AbstractCegarLoop]: Abstraction has 31195 states and 39386 transitions. [2023-11-29 06:30:55,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 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 06:30:55,305 INFO L276 IsEmpty]: Start isEmpty. Operand 31195 states and 39386 transitions. [2023-11-29 06:30:55,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-11-29 06:30:55,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:30:55,307 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:30:55,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:30:55,307 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:30:55,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:30:55,308 INFO L85 PathProgramCache]: Analyzing trace with hash -985012649, now seen corresponding path program 1 times [2023-11-29 06:30:55,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:30:55,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981941120] [2023-11-29 06:30:55,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:30:55,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:30:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:55,534 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:30:55,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:30:55,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981941120] [2023-11-29 06:30:55,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981941120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:30:55,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:30:55,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:30:55,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041633632] [2023-11-29 06:30:55,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:30:55,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:30:55,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:30:55,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:30:55,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:30:55,536 INFO L87 Difference]: Start difference. First operand 31195 states and 39386 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 06:30:59,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:30:59,578 INFO L93 Difference]: Finished difference Result 88374 states and 112489 transitions. [2023-11-29 06:30:59,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:30:59,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 277 [2023-11-29 06:30:59,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:30:59,648 INFO L225 Difference]: With dead ends: 88374 [2023-11-29 06:30:59,648 INFO L226 Difference]: Without dead ends: 57967 [2023-11-29 06:30:59,669 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 06:30:59,670 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 788 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 850 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 3322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 850 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:30:59,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 1118 Invalid, 3322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [850 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-29 06:30:59,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57967 states. [2023-11-29 06:31:00,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57967 to 56378. [2023-11-29 06:31:00,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56378 states, 56377 states have (on average 1.2060414708125653) internal successors, (67993), 56377 states have internal predecessors, (67993), 0 states have call successors, (0), 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 06:31:00,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56378 states to 56378 states and 67993 transitions. [2023-11-29 06:31:00,443 INFO L78 Accepts]: Start accepts. Automaton has 56378 states and 67993 transitions. Word has length 277 [2023-11-29 06:31:00,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:31:00,443 INFO L495 AbstractCegarLoop]: Abstraction has 56378 states and 67993 transitions. [2023-11-29 06:31:00,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 06:31:00,444 INFO L276 IsEmpty]: Start isEmpty. Operand 56378 states and 67993 transitions. [2023-11-29 06:31:00,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2023-11-29 06:31:00,449 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:31:00,449 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:00,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 06:31:00,450 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:31:00,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:00,450 INFO L85 PathProgramCache]: Analyzing trace with hash 2055068500, now seen corresponding path program 1 times [2023-11-29 06:31:00,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:00,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157474681] [2023-11-29 06:31:00,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:00,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:00,739 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-29 06:31:00,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:00,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157474681] [2023-11-29 06:31:00,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157474681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:00,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:00,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:31:00,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035760759] [2023-11-29 06:31:00,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:00,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:31:00,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:00,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:31:00,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:31:00,742 INFO L87 Difference]: Start difference. First operand 56378 states and 67993 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 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 06:31:04,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:31:04,533 INFO L93 Difference]: Finished difference Result 113551 states and 136794 transitions. [2023-11-29 06:31:04,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:31:04,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 336 [2023-11-29 06:31:04,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:31:04,589 INFO L225 Difference]: With dead ends: 113551 [2023-11-29 06:31:04,589 INFO L226 Difference]: Without dead ends: 57961 [2023-11-29 06:31:04,613 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 06:31:04,614 INFO L413 NwaCegarLoop]: 1405 mSDtfsCounter, 944 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 2487 mSolverCounterSat, 624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 3111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 624 IncrementalHoareTripleChecker+Valid, 2487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:31:04,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 1498 Invalid, 3111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [624 Valid, 2487 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 06:31:04,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57961 states. [2023-11-29 06:31:05,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57961 to 56372. [2023-11-29 06:31:05,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56372 states, 56371 states have (on average 1.1599226552660056) internal successors, (65386), 56371 states have internal predecessors, (65386), 0 states have call successors, (0), 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 06:31:05,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56372 states to 56372 states and 65386 transitions. [2023-11-29 06:31:05,199 INFO L78 Accepts]: Start accepts. Automaton has 56372 states and 65386 transitions. Word has length 336 [2023-11-29 06:31:05,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:31:05,200 INFO L495 AbstractCegarLoop]: Abstraction has 56372 states and 65386 transitions. [2023-11-29 06:31:05,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 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 06:31:05,200 INFO L276 IsEmpty]: Start isEmpty. Operand 56372 states and 65386 transitions. [2023-11-29 06:31:05,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-11-29 06:31:05,203 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:31:05,204 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 06:31:05,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 06:31:05,204 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:31:05,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:05,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1597880938, now seen corresponding path program 1 times [2023-11-29 06:31:05,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:05,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805524566] [2023-11-29 06:31:05,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:05,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:05,636 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-11-29 06:31:05,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:05,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805524566] [2023-11-29 06:31:05,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805524566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:05,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:05,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:31:05,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607187279] [2023-11-29 06:31:05,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:05,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:31:05,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:05,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:31:05,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:31:05,639 INFO L87 Difference]: Start difference. First operand 56372 states and 65386 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 06:31:09,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:31:09,769 INFO L93 Difference]: Finished difference Result 111955 states and 129979 transitions. [2023-11-29 06:31:09,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:31:09,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 366 [2023-11-29 06:31:09,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:31:09,941 INFO L225 Difference]: With dead ends: 111955 [2023-11-29 06:31:09,941 INFO L226 Difference]: Without dead ends: 56371 [2023-11-29 06:31:09,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 06:31:09,955 INFO L413 NwaCegarLoop]: 1363 mSDtfsCounter, 1159 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 2917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:31:09,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1159 Valid, 1446 Invalid, 2917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-29 06:31:09,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56371 states. [2023-11-29 06:31:10,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56371 to 56369. [2023-11-29 06:31:10,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56369 states, 56368 states have (on average 1.1242548963951178) internal successors, (63372), 56368 states have internal predecessors, (63372), 0 states have call successors, (0), 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 06:31:10,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56369 states to 56369 states and 63372 transitions. [2023-11-29 06:31:10,683 INFO L78 Accepts]: Start accepts. Automaton has 56369 states and 63372 transitions. Word has length 366 [2023-11-29 06:31:10,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:31:10,684 INFO L495 AbstractCegarLoop]: Abstraction has 56369 states and 63372 transitions. [2023-11-29 06:31:10,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 06:31:10,684 INFO L276 IsEmpty]: Start isEmpty. Operand 56369 states and 63372 transitions. [2023-11-29 06:31:10,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2023-11-29 06:31:10,692 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:31:10,693 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-29 06:31:10,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 06:31:10,694 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:31:10,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:10,694 INFO L85 PathProgramCache]: Analyzing trace with hash 545788604, now seen corresponding path program 1 times [2023-11-29 06:31:10,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:10,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959130576] [2023-11-29 06:31:10,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:10,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:11,141 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2023-11-29 06:31:11,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:11,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959130576] [2023-11-29 06:31:11,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959130576] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:11,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:11,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:31:11,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903922011] [2023-11-29 06:31:11,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:11,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:31:11,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:11,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:31:11,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:31:11,144 INFO L87 Difference]: Start difference. First operand 56369 states and 63372 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 06:31:15,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:31:15,101 INFO L93 Difference]: Finished difference Result 134017 states and 150647 transitions. [2023-11-29 06:31:15,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:31:15,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 379 [2023-11-29 06:31:15,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:31:15,188 INFO L225 Difference]: With dead ends: 134017 [2023-11-29 06:31:15,188 INFO L226 Difference]: Without dead ends: 78436 [2023-11-29 06:31:15,216 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 06:31:15,217 INFO L413 NwaCegarLoop]: 1328 mSDtfsCounter, 1052 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 3186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:31:15,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 1379 Invalid, 3186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 06:31:15,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78436 states. [2023-11-29 06:31:16,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78436 to 76045. [2023-11-29 06:31:16,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76045 states, 76044 states have (on average 1.1164062910946295) internal successors, (84896), 76044 states have internal predecessors, (84896), 0 states have call successors, (0), 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 06:31:16,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76045 states to 76045 states and 84896 transitions. [2023-11-29 06:31:16,250 INFO L78 Accepts]: Start accepts. Automaton has 76045 states and 84896 transitions. Word has length 379 [2023-11-29 06:31:16,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:31:16,251 INFO L495 AbstractCegarLoop]: Abstraction has 76045 states and 84896 transitions. [2023-11-29 06:31:16,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 06:31:16,252 INFO L276 IsEmpty]: Start isEmpty. Operand 76045 states and 84896 transitions. [2023-11-29 06:31:16,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2023-11-29 06:31:16,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:31:16,261 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:16,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 06:31:16,261 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:31:16,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:16,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1039034816, now seen corresponding path program 1 times [2023-11-29 06:31:16,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:16,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632786617] [2023-11-29 06:31:16,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:16,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:16,661 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 575 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-11-29 06:31:16,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:16,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632786617] [2023-11-29 06:31:16,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632786617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:16,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:16,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:31:16,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563090223] [2023-11-29 06:31:16,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:16,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:31:16,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:16,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:31:16,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:31:16,664 INFO L87 Difference]: Start difference. First operand 76045 states and 84896 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 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 06:31:21,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:31:21,129 INFO L93 Difference]: Finished difference Result 174136 states and 195481 transitions. [2023-11-29 06:31:21,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:31:21,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 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 418 [2023-11-29 06:31:21,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:31:21,242 INFO L225 Difference]: With dead ends: 174136 [2023-11-29 06:31:21,242 INFO L226 Difference]: Without dead ends: 98879 [2023-11-29 06:31:21,275 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 06:31:21,275 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 948 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 795 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 3197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 795 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:31:21,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 846 Invalid, 3197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [795 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-29 06:31:21,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98879 states. [2023-11-29 06:31:22,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98879 to 97282. [2023-11-29 06:31:22,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97282 states, 97281 states have (on average 1.1086440312085608) internal successors, (107850), 97281 states have internal predecessors, (107850), 0 states have call successors, (0), 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 06:31:22,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97282 states to 97282 states and 107850 transitions. [2023-11-29 06:31:22,551 INFO L78 Accepts]: Start accepts. Automaton has 97282 states and 107850 transitions. Word has length 418 [2023-11-29 06:31:22,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:31:22,552 INFO L495 AbstractCegarLoop]: Abstraction has 97282 states and 107850 transitions. [2023-11-29 06:31:22,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 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 06:31:22,552 INFO L276 IsEmpty]: Start isEmpty. Operand 97282 states and 107850 transitions. [2023-11-29 06:31:22,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2023-11-29 06:31:22,561 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:31:22,561 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:31:22,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 06:31:22,562 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:31:22,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:22,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1468697412, now seen corresponding path program 1 times [2023-11-29 06:31:22,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:22,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952993492] [2023-11-29 06:31:22,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:22,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:23,684 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 256 proven. 50 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-29 06:31:23,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:23,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952993492] [2023-11-29 06:31:23,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952993492] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:31:23,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156157396] [2023-11-29 06:31:23,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:23,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:31:23,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:31:23,686 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:31:23,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:31:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:23,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:31:23,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:31:23,998 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 281 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-29 06:31:23,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:31:23,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156157396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:23,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:31:23,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-29 06:31:23,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116280074] [2023-11-29 06:31:23,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:24,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:31:24,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:24,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:31:24,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:31:24,002 INFO L87 Difference]: Start difference. First operand 97282 states and 107850 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 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 06:31:28,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:31:28,837 INFO L93 Difference]: Finished difference Result 267158 states and 296915 transitions. [2023-11-29 06:31:28,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:31:28,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 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 433 [2023-11-29 06:31:28,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:31:29,020 INFO L225 Difference]: With dead ends: 267158 [2023-11-29 06:31:29,020 INFO L226 Difference]: Without dead ends: 170664 [2023-11-29 06:31:29,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:31:29,056 INFO L413 NwaCegarLoop]: 812 mSDtfsCounter, 1068 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 2677 mSolverCounterSat, 536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 3213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 536 IncrementalHoareTripleChecker+Valid, 2677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:31:29,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1068 Valid, 1017 Invalid, 3213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [536 Valid, 2677 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-29 06:31:29,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170664 states. [2023-11-29 06:31:30,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170664 to 167477. [2023-11-29 06:31:30,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167477 states, 167476 states have (on average 1.0927535885738853) internal successors, (183010), 167476 states have internal predecessors, (183010), 0 states have call successors, (0), 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 06:31:31,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167477 states to 167477 states and 183010 transitions. [2023-11-29 06:31:31,351 INFO L78 Accepts]: Start accepts. Automaton has 167477 states and 183010 transitions. Word has length 433 [2023-11-29 06:31:31,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:31:31,351 INFO L495 AbstractCegarLoop]: Abstraction has 167477 states and 183010 transitions. [2023-11-29 06:31:31,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 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 06:31:31,352 INFO L276 IsEmpty]: Start isEmpty. Operand 167477 states and 183010 transitions. [2023-11-29 06:31:31,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2023-11-29 06:31:31,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:31:31,360 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 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] [2023-11-29 06:31:31,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:31:31,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 06:31:31,561 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:31:31,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:31,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1581760149, now seen corresponding path program 1 times [2023-11-29 06:31:31,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:31,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095444303] [2023-11-29 06:31:31,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:31,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:33,101 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 401 proven. 113 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-11-29 06:31:33,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:33,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095444303] [2023-11-29 06:31:33,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095444303] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:31:33,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963238722] [2023-11-29 06:31:33,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:33,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:31:33,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:31:33,102 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:31:33,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:31:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:33,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:31:33,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:31:33,948 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 401 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2023-11-29 06:31:33,948 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:31:33,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963238722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:33,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:31:33,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-11-29 06:31:33,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350248777] [2023-11-29 06:31:33,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:33,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:31:33,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:33,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:31:33,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:31:33,951 INFO L87 Difference]: Start difference. First operand 167477 states and 183010 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 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 06:31:38,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:31:38,519 INFO L93 Difference]: Finished difference Result 319225 states and 350132 transitions. [2023-11-29 06:31:38,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:31:38,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 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 444 [2023-11-29 06:31:38,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:31:38,738 INFO L225 Difference]: With dead ends: 319225 [2023-11-29 06:31:38,738 INFO L226 Difference]: Without dead ends: 173791 [2023-11-29 06:31:38,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:31:38,796 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 686 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 2616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:31:38,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 1158 Invalid, 2616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 2460 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 06:31:38,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173791 states. [2023-11-29 06:31:40,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173791 to 173772. [2023-11-29 06:31:40,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173772 states, 173771 states have (on average 1.0830518325842633) internal successors, (188203), 173771 states have internal predecessors, (188203), 0 states have call successors, (0), 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 06:31:40,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173772 states to 173772 states and 188203 transitions. [2023-11-29 06:31:40,931 INFO L78 Accepts]: Start accepts. Automaton has 173772 states and 188203 transitions. Word has length 444 [2023-11-29 06:31:40,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:31:40,932 INFO L495 AbstractCegarLoop]: Abstraction has 173772 states and 188203 transitions. [2023-11-29 06:31:40,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 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 06:31:40,932 INFO L276 IsEmpty]: Start isEmpty. Operand 173772 states and 188203 transitions. [2023-11-29 06:31:40,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2023-11-29 06:31:40,938 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:31:40,938 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:31:40,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:31:41,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 06:31:41,139 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:31:41,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:41,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1169525991, now seen corresponding path program 1 times [2023-11-29 06:31:41,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:41,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573584753] [2023-11-29 06:31:41,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:41,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:41,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 572 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2023-11-29 06:31:41,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:41,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573584753] [2023-11-29 06:31:41,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573584753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:41,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:41,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:31:41,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004206183] [2023-11-29 06:31:41,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:41,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:31:41,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:41,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:31:41,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:31:41,344 INFO L87 Difference]: Start difference. First operand 173772 states and 188203 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 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 06:31:45,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:31:45,965 INFO L93 Difference]: Finished difference Result 328456 states and 356250 transitions. [2023-11-29 06:31:45,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:31:45,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 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 480 [2023-11-29 06:31:45,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:31:46,146 INFO L225 Difference]: With dead ends: 328456 [2023-11-29 06:31:46,146 INFO L226 Difference]: Without dead ends: 153898 [2023-11-29 06:31:46,197 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 06:31:46,197 INFO L413 NwaCegarLoop]: 1454 mSDtfsCounter, 989 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:31:46,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 1583 Invalid, 2842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 2317 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-29 06:31:46,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153898 states. [2023-11-29 06:31:47,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153898 to 147588. [2023-11-29 06:31:47,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147588 states, 147587 states have (on average 1.0632711553185579) internal successors, (156925), 147587 states have internal predecessors, (156925), 0 states have call successors, (0), 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 06:31:48,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147588 states to 147588 states and 156925 transitions. [2023-11-29 06:31:48,199 INFO L78 Accepts]: Start accepts. Automaton has 147588 states and 156925 transitions. Word has length 480 [2023-11-29 06:31:48,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:31:48,200 INFO L495 AbstractCegarLoop]: Abstraction has 147588 states and 156925 transitions. [2023-11-29 06:31:48,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 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 06:31:48,200 INFO L276 IsEmpty]: Start isEmpty. Operand 147588 states and 156925 transitions. [2023-11-29 06:31:48,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-11-29 06:31:48,214 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:31:48,215 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:31:48,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 06:31:48,215 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:31:48,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:48,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1283620487, now seen corresponding path program 1 times [2023-11-29 06:31:48,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:48,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264898857] [2023-11-29 06:31:48,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:48,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:31:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:31:49,063 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-29 06:31:49,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:31:49,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264898857] [2023-11-29 06:31:49,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264898857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:31:49,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:31:49,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:31:49,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698486603] [2023-11-29 06:31:49,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:31:49,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:31:49,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:31:49,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:31:49,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:31:49,066 INFO L87 Difference]: Start difference. First operand 147588 states and 156925 transitions. Second operand has 4 states, 4 states have (on average 108.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 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 06:31:56,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:31:56,449 INFO L93 Difference]: Finished difference Result 351111 states and 375244 transitions. [2023-11-29 06:31:56,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:31:56,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 108.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 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 531 [2023-11-29 06:31:56,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:31:56,704 INFO L225 Difference]: With dead ends: 351111 [2023-11-29 06:31:56,704 INFO L226 Difference]: Without dead ends: 220057 [2023-11-29 06:31:56,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 06:31:56,756 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 1397 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 5055 mSolverCounterSat, 852 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 5907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 852 IncrementalHoareTripleChecker+Valid, 5055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:31:56,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1397 Valid, 728 Invalid, 5907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [852 Valid, 5055 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-11-29 06:31:56,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220057 states. [2023-11-29 06:31:59,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220057 to 217672. [2023-11-29 06:31:59,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217672 states, 217671 states have (on average 1.0643126553376425) internal successors, (231670), 217671 states have internal predecessors, (231670), 0 states have call successors, (0), 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 06:31:59,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217672 states to 217672 states and 231670 transitions. [2023-11-29 06:31:59,928 INFO L78 Accepts]: Start accepts. Automaton has 217672 states and 231670 transitions. Word has length 531 [2023-11-29 06:31:59,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:31:59,929 INFO L495 AbstractCegarLoop]: Abstraction has 217672 states and 231670 transitions. [2023-11-29 06:31:59,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 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 06:31:59,929 INFO L276 IsEmpty]: Start isEmpty. Operand 217672 states and 231670 transitions. [2023-11-29 06:31:59,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2023-11-29 06:31:59,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:31:59,942 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2023-11-29 06:31:59,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 06:31:59,943 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:31:59,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:31:59,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1008108374, now seen corresponding path program 1 times [2023-11-29 06:31:59,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:31:59,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808839087] [2023-11-29 06:31:59,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:31:59,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:32:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:00,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2023-11-29 06:32:00,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:32:00,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808839087] [2023-11-29 06:32:00,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808839087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:32:00,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:32:00,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:32:00,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870580107] [2023-11-29 06:32:00,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:32:00,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:32:00,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:32:00,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:32:00,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:32:00,320 INFO L87 Difference]: Start difference. First operand 217672 states and 231670 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:05,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:32:05,813 INFO L93 Difference]: Finished difference Result 455048 states and 484952 transitions. [2023-11-29 06:32:05,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:32:05,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 536 [2023-11-29 06:32:05,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:32:06,097 INFO L225 Difference]: With dead ends: 455048 [2023-11-29 06:32:06,097 INFO L226 Difference]: Without dead ends: 253910 [2023-11-29 06:32:06,389 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 06:32:06,390 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 826 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 2804 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 3116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 2804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:32:06,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1720 Invalid, 3116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 2804 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-29 06:32:06,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253910 states. [2023-11-29 06:32:09,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253910 to 243653. [2023-11-29 06:32:09,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243653 states, 243652 states have (on average 1.0631105018633134) internal successors, (259029), 243652 states have internal predecessors, (259029), 0 states have call successors, (0), 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 06:32:09,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243653 states to 243653 states and 259029 transitions. [2023-11-29 06:32:09,661 INFO L78 Accepts]: Start accepts. Automaton has 243653 states and 259029 transitions. Word has length 536 [2023-11-29 06:32:09,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:32:09,661 INFO L495 AbstractCegarLoop]: Abstraction has 243653 states and 259029 transitions. [2023-11-29 06:32:09,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:09,662 INFO L276 IsEmpty]: Start isEmpty. Operand 243653 states and 259029 transitions. [2023-11-29 06:32:09,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2023-11-29 06:32:09,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:32:09,675 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 06:32:09,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 06:32:09,676 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:32:09,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:32:09,676 INFO L85 PathProgramCache]: Analyzing trace with hash 476504916, now seen corresponding path program 1 times [2023-11-29 06:32:09,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:32:09,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565108004] [2023-11-29 06:32:09,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:32:09,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:32:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:10,297 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-11-29 06:32:10,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:32:10,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565108004] [2023-11-29 06:32:10,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565108004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:32:10,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:32:10,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:32:10,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830700776] [2023-11-29 06:32:10,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:32:10,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:32:10,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:32:10,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:32:10,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:32:10,300 INFO L87 Difference]: Start difference. First operand 243653 states and 259029 transitions. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 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 06:32:15,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:32:15,706 INFO L93 Difference]: Finished difference Result 528248 states and 562942 transitions. [2023-11-29 06:32:15,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:32:15,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 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 547 [2023-11-29 06:32:15,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:32:16,307 INFO L225 Difference]: With dead ends: 528248 [2023-11-29 06:32:16,307 INFO L226 Difference]: Without dead ends: 283020 [2023-11-29 06:32:16,374 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 06:32:16,375 INFO L413 NwaCegarLoop]: 1704 mSDtfsCounter, 677 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 2895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:32:16,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 1844 Invalid, 2895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 2460 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-29 06:32:16,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283020 states. [2023-11-29 06:32:19,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283020 to 280637. [2023-11-29 06:32:19,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280637 states, 280636 states have (on average 1.0555131914651008) internal successors, (296215), 280636 states have internal predecessors, (296215), 0 states have call successors, (0), 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 06:32:20,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280637 states to 280637 states and 296215 transitions. [2023-11-29 06:32:20,170 INFO L78 Accepts]: Start accepts. Automaton has 280637 states and 296215 transitions. Word has length 547 [2023-11-29 06:32:20,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:32:20,171 INFO L495 AbstractCegarLoop]: Abstraction has 280637 states and 296215 transitions. [2023-11-29 06:32:20,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 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 06:32:20,171 INFO L276 IsEmpty]: Start isEmpty. Operand 280637 states and 296215 transitions. [2023-11-29 06:32:20,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2023-11-29 06:32:20,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:32:20,204 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:32:20,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 06:32:20,205 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:32:20,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:32:20,205 INFO L85 PathProgramCache]: Analyzing trace with hash -87226171, now seen corresponding path program 1 times [2023-11-29 06:32:20,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:32:20,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595450735] [2023-11-29 06:32:20,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:32:20,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:32:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:21,118 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 497 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-29 06:32:21,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:32:21,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595450735] [2023-11-29 06:32:21,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595450735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:32:21,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:32:21,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:32:21,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428111374] [2023-11-29 06:32:21,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:32:21,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:32:21,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:32:21,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:32:21,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:32:21,121 INFO L87 Difference]: Start difference. First operand 280637 states and 296215 transitions. Second operand has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 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 06:32:27,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:32:27,068 INFO L93 Difference]: Finished difference Result 616413 states and 652106 transitions. [2023-11-29 06:32:27,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:32:27,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 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 710 [2023-11-29 06:32:27,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:32:27,510 INFO L225 Difference]: With dead ends: 616413 [2023-11-29 06:32:27,511 INFO L226 Difference]: Without dead ends: 355458 [2023-11-29 06:32:27,607 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 06:32:27,608 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 817 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 907 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 907 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:32:27,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 575 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [907 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-29 06:32:27,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355458 states. [2023-11-29 06:32:31,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355458 to 350728. [2023-11-29 06:32:31,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350728 states, 350727 states have (on average 1.050190033843987) internal successors, (368330), 350727 states have internal predecessors, (368330), 0 states have call successors, (0), 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 06:32:32,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350728 states to 350728 states and 368330 transitions. [2023-11-29 06:32:32,305 INFO L78 Accepts]: Start accepts. Automaton has 350728 states and 368330 transitions. Word has length 710 [2023-11-29 06:32:32,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:32:32,306 INFO L495 AbstractCegarLoop]: Abstraction has 350728 states and 368330 transitions. [2023-11-29 06:32:32,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 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 06:32:32,306 INFO L276 IsEmpty]: Start isEmpty. Operand 350728 states and 368330 transitions. [2023-11-29 06:32:32,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2023-11-29 06:32:32,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:32:32,355 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:32:32,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 06:32:32,355 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:32:32,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:32:32,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1658082634, now seen corresponding path program 1 times [2023-11-29 06:32:32,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:32:32,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301527628] [2023-11-29 06:32:32,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:32:32,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:32:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:33,653 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 643 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-11-29 06:32:33,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:32:33,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301527628] [2023-11-29 06:32:33,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301527628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:32:33,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:32:33,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:32:33,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290504376] [2023-11-29 06:32:33,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:32:33,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:32:33,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:32:33,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:32:33,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:32:33,657 INFO L87 Difference]: Start difference. First operand 350728 states and 368330 transitions. Second operand has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:43,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:32:43,531 INFO L93 Difference]: Finished difference Result 833157 states and 875850 transitions. [2023-11-29 06:32:43,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:32:43,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 807 [2023-11-29 06:32:43,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:32:44,586 INFO L225 Difference]: With dead ends: 833157 [2023-11-29 06:32:44,586 INFO L226 Difference]: Without dead ends: 483217 [2023-11-29 06:32:44,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:32:44,691 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 1732 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 6261 mSolverCounterSat, 1038 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 7299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1038 IncrementalHoareTripleChecker+Valid, 6261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:32:44,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1732 Valid, 848 Invalid, 7299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1038 Valid, 6261 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-11-29 06:32:45,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483217 states. [2023-11-29 06:32:49,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483217 to 396401. [2023-11-29 06:32:50,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396401 states, 396400 states have (on average 1.047353683148335) internal successors, (415171), 396400 states have internal predecessors, (415171), 0 states have call successors, (0), 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 06:32:50,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396401 states to 396401 states and 415171 transitions. [2023-11-29 06:32:50,695 INFO L78 Accepts]: Start accepts. Automaton has 396401 states and 415171 transitions. Word has length 807 [2023-11-29 06:32:50,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:32:50,696 INFO L495 AbstractCegarLoop]: Abstraction has 396401 states and 415171 transitions. [2023-11-29 06:32:50,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:32:50,696 INFO L276 IsEmpty]: Start isEmpty. Operand 396401 states and 415171 transitions. [2023-11-29 06:32:50,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 872 [2023-11-29 06:32:50,748 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:32:50,749 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:32:50,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 06:32:50,749 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:32:50,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:32:50,750 INFO L85 PathProgramCache]: Analyzing trace with hash -496186101, now seen corresponding path program 1 times [2023-11-29 06:32:50,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:32:50,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191058715] [2023-11-29 06:32:50,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:32:50,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:32:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:51,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2156 backedges. 1533 proven. 0 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2023-11-29 06:32:51,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:32:51,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191058715] [2023-11-29 06:32:51,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191058715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:32:51,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:32:51,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:32:51,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851272845] [2023-11-29 06:32:51,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:32:51,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:32:51,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:32:51,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:32:51,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:32:51,881 INFO L87 Difference]: Start difference. First operand 396401 states and 415171 transitions. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 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 06:32:57,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:32:57,336 INFO L93 Difference]: Finished difference Result 774720 states and 811916 transitions. [2023-11-29 06:32:57,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:32:57,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 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 871 [2023-11-29 06:32:57,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:32:57,858 INFO L225 Difference]: With dead ends: 774720 [2023-11-29 06:32:57,858 INFO L226 Difference]: Without dead ends: 396417 [2023-11-29 06:32:57,998 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 06:32:57,999 INFO L413 NwaCegarLoop]: 1681 mSDtfsCounter, 759 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2465 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 2636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 2465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:32:57,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 1819 Invalid, 2636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 2465 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-29 06:32:58,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396417 states. [2023-11-29 06:33:02,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396417 to 379866. [2023-11-29 06:33:03,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379866 states, 379865 states have (on average 1.0439814144498702) internal successors, (396572), 379865 states have internal predecessors, (396572), 0 states have call successors, (0), 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 06:33:03,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379866 states to 379866 states and 396572 transitions. [2023-11-29 06:33:03,441 INFO L78 Accepts]: Start accepts. Automaton has 379866 states and 396572 transitions. Word has length 871 [2023-11-29 06:33:03,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:33:03,442 INFO L495 AbstractCegarLoop]: Abstraction has 379866 states and 396572 transitions. [2023-11-29 06:33:03,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 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 06:33:03,442 INFO L276 IsEmpty]: Start isEmpty. Operand 379866 states and 396572 transitions. [2023-11-29 06:33:03,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 923 [2023-11-29 06:33:03,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:33:03,488 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:33:03,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 06:33:03,488 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:33:03,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:03,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1372193409, now seen corresponding path program 1 times [2023-11-29 06:33:03,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:03,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347832088] [2023-11-29 06:33:03,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:03,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:33:04,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 627 proven. 200 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-11-29 06:33:04,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:33:04,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347832088] [2023-11-29 06:33:04,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347832088] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:33:04,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713015200] [2023-11-29 06:33:04,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:04,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:33:04,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:33:04,768 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:33:04,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:33:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:33:05,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 1115 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:33:05,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:33:05,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 686 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2023-11-29 06:33:05,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:33:05,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713015200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:33:05,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:33:05,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-29 06:33:05,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557441356] [2023-11-29 06:33:05,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:33:05,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:33:05,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:33:05,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:33:05,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:33:05,401 INFO L87 Difference]: Start difference. First operand 379866 states and 396572 transitions. Second operand has 4 states, 4 states have (on average 157.0) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 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 06:33:14,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:33:14,046 INFO L93 Difference]: Finished difference Result 818940 states and 855044 transitions. [2023-11-29 06:33:14,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:33:14,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 157.0) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 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 922 [2023-11-29 06:33:14,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:33:14,941 INFO L225 Difference]: With dead ends: 818940 [2023-11-29 06:33:14,941 INFO L226 Difference]: Without dead ends: 442223 [2023-11-29 06:33:15,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 920 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:33:15,054 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 1668 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 5529 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1668 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 6201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 5529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:33:15,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1668 Valid, 772 Invalid, 6201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 5529 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-11-29 06:33:15,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442223 states. [2023-11-29 06:33:19,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442223 to 435004. [2023-11-29 06:33:19,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435004 states, 435003 states have (on average 1.0442042928439574) internal successors, (454232), 435003 states have internal predecessors, (454232), 0 states have call successors, (0), 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 06:33:20,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435004 states to 435004 states and 454232 transitions. [2023-11-29 06:33:20,445 INFO L78 Accepts]: Start accepts. Automaton has 435004 states and 454232 transitions. Word has length 922 [2023-11-29 06:33:20,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:33:20,446 INFO L495 AbstractCegarLoop]: Abstraction has 435004 states and 454232 transitions. [2023-11-29 06:33:20,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.0) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 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 06:33:20,446 INFO L276 IsEmpty]: Start isEmpty. Operand 435004 states and 454232 transitions. [2023-11-29 06:33:20,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 995 [2023-11-29 06:33:20,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:33:20,477 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:33:20,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:33:20,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84b0d7a5-3498-4127-b9c7-01c0446730df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 06:33:20,678 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:33:20,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:20,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1309575616, now seen corresponding path program 1 times [2023-11-29 06:33:20,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:20,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119676303] [2023-11-29 06:33:20,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:20,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:33:23,232 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 726 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:23,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:33:23,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119676303] [2023-11-29 06:33:23,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119676303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:33:23,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:33:23,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:33:23,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643301793] [2023-11-29 06:33:23,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:33:23,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:33:23,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:33:23,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:33:23,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:33:23,235 INFO L87 Difference]: Start difference. First operand 435004 states and 454232 transitions. Second operand has 4 states, 4 states have (on average 248.5) internal successors, (994), 4 states have internal predecessors, (994), 0 states have call successors, (0), 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 06:33:31,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:33:31,836 INFO L93 Difference]: Finished difference Result 943378 states and 986049 transitions. [2023-11-29 06:33:31,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:33:31,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 248.5) internal successors, (994), 4 states have internal predecessors, (994), 0 states have call successors, (0), 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 994 [2023-11-29 06:33:31,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:33:32,512 INFO L225 Difference]: With dead ends: 943378 [2023-11-29 06:33:32,512 INFO L226 Difference]: Without dead ends: 528841 [2023-11-29 06:33:32,685 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 06:33:32,686 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 1252 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 5127 mSolverCounterSat, 844 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 5971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 844 IncrementalHoareTripleChecker+Valid, 5127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:33:32,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 604 Invalid, 5971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [844 Valid, 5127 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-11-29 06:33:33,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528841 states. [2023-11-29 06:33:38,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528841 to 522398. [2023-11-29 06:33:38,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522398 states, 522397 states have (on average 1.0441369303422492) internal successors, (545454), 522397 states have internal predecessors, (545454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)