./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label51.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label51.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --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 92aa4dc056ccedcde60ae7f447376d93fb9f66f20db418d40e67517b8efc809e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:40:22,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:40:22,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:40:23,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:40:23,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:40:23,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:40:23,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:40:23,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:40:23,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:40:23,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:40:23,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:40:23,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:40:23,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:40:23,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:40:23,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:40:23,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:40:23,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:40:23,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:40:23,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:40:23,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:40:23,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:40:23,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:40:23,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:40:23,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:40:23,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:40:23,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:40:23,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:40:23,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:40:23,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:40:23,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:40:23,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:40:23,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:40:23,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:40:23,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:40:23,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:40:23,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:40:23,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:40:23,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:40:23,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:40:23,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:40:23,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:40:23,070 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:40:23,105 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:40:23,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:40:23,105 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:40:23,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:40:23,106 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:40:23,106 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:40:23,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:40:23,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:40:23,107 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:40:23,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:40:23,108 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:40:23,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:40:23,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:40:23,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:40:23,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:40:23,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:40:23,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:40:23,109 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:40:23,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:40:23,109 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:40:23,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:40:23,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:40:23,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:40:23,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:40:23,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:40:23,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:40:23,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:40:23,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:40:23,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:40:23,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:40:23,112 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:40:23,112 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:40:23,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:40:23,112 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92aa4dc056ccedcde60ae7f447376d93fb9f66f20db418d40e67517b8efc809e [2022-11-16 12:40:23,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:40:23,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:40:23,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:40:23,475 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:40:23,476 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:40:23,477 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/eca-rers2012/Problem17_label51.c [2022-11-16 12:40:23,563 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/data/79456f130/3ff5661727884fe385908e9af5f78b7c/FLAG2738fd349 [2022-11-16 12:40:24,336 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:40:24,337 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/sv-benchmarks/c/eca-rers2012/Problem17_label51.c [2022-11-16 12:40:24,362 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/data/79456f130/3ff5661727884fe385908e9af5f78b7c/FLAG2738fd349 [2022-11-16 12:40:24,461 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/data/79456f130/3ff5661727884fe385908e9af5f78b7c [2022-11-16 12:40:24,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:40:24,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:40:24,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:40:24,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:40:24,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:40:24,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:40:24" (1/1) ... [2022-11-16 12:40:24,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36bdcdc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:24, skipping insertion in model container [2022-11-16 12:40:24,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:40:24" (1/1) ... [2022-11-16 12:40:24,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:40:24,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:40:24,875 WARN L229 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_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/sv-benchmarks/c/eca-rers2012/Problem17_label51.c[5625,5638] [2022-11-16 12:40:25,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:40:25,696 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:40:25,718 WARN L229 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_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/sv-benchmarks/c/eca-rers2012/Problem17_label51.c[5625,5638] [2022-11-16 12:40:26,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:40:26,149 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:40:26,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:26 WrapperNode [2022-11-16 12:40:26,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:40:26,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:40:26,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:40:26,151 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:40:26,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:26" (1/1) ... [2022-11-16 12:40:26,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:26" (1/1) ... [2022-11-16 12:40:26,543 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-11-16 12:40:26,544 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:40:26,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:40:26,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:40:26,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:40:26,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:26" (1/1) ... [2022-11-16 12:40:26,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:26" (1/1) ... [2022-11-16 12:40:26,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:26" (1/1) ... [2022-11-16 12:40:26,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:26" (1/1) ... [2022-11-16 12:40:26,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:26" (1/1) ... [2022-11-16 12:40:26,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:26" (1/1) ... [2022-11-16 12:40:26,901 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:26" (1/1) ... [2022-11-16 12:40:26,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:26" (1/1) ... [2022-11-16 12:40:26,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:40:26,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:40:26,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:40:26,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:40:26,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:26" (1/1) ... [2022-11-16 12:40:26,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:40:26,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:40:27,010 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:40:27,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:40:27,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:40:27,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:40:27,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:40:27,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:40:27,223 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:40:27,240 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:40:31,842 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:40:31,854 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:40:31,854 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:40:31,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:40:31 BoogieIcfgContainer [2022-11-16 12:40:31,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:40:31,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:40:31,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:40:31,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:40:31,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:40:24" (1/3) ... [2022-11-16 12:40:31,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1c81fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:40:31, skipping insertion in model container [2022-11-16 12:40:31,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:40:26" (2/3) ... [2022-11-16 12:40:31,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1c81fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:40:31, skipping insertion in model container [2022-11-16 12:40:31,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:40:31" (3/3) ... [2022-11-16 12:40:31,866 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label51.c [2022-11-16 12:40:31,885 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:40:31,886 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:40:31,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:40:32,006 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=LoopsAndPotentialCycles, 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;@10307f61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:40:32,007 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:40:32,016 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:32,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-16 12:40:32,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:32,025 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] [2022-11-16 12:40:32,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:32,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:32,034 INFO L85 PathProgramCache]: Analyzing trace with hash 2088660649, now seen corresponding path program 1 times [2022-11-16 12:40:32,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:32,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769831638] [2022-11-16 12:40:32,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:32,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:32,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:32,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:32,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769831638] [2022-11-16 12:40:32,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769831638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:32,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:32,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:40:32,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590036321] [2022-11-16 12:40:32,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:32,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:40:32,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:32,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:40:32,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:32,455 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:36,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:36,525 INFO L93 Difference]: Finished difference Result 1680 states and 3074 transitions. [2022-11-16 12:40:36,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:40:36,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-11-16 12:40:36,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:36,546 INFO L225 Difference]: With dead ends: 1680 [2022-11-16 12:40:36,546 INFO L226 Difference]: Without dead ends: 1011 [2022-11-16 12:40:36,552 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 [2022-11-16 12:40:36,555 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 544 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:36,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 220 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-16 12:40:36,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2022-11-16 12:40:36,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 996. [2022-11-16 12:40:36,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 995 states have (on average 1.735678391959799) internal successors, (1727), 995 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:36,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1727 transitions. [2022-11-16 12:40:36,677 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1727 transitions. Word has length 37 [2022-11-16 12:40:36,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:36,678 INFO L495 AbstractCegarLoop]: Abstraction has 996 states and 1727 transitions. [2022-11-16 12:40:36,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:36,679 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1727 transitions. [2022-11-16 12:40:36,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 12:40:36,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:36,683 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:36,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:40:36,684 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:36,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:36,685 INFO L85 PathProgramCache]: Analyzing trace with hash 52735373, now seen corresponding path program 1 times [2022-11-16 12:40:36,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:36,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687862731] [2022-11-16 12:40:36,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:36,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:36,977 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:36,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:36,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687862731] [2022-11-16 12:40:36,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687862731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:36,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:36,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:40:36,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900920690] [2022-11-16 12:40:36,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:36,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:40:36,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:36,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:40:36,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:36,984 INFO L87 Difference]: Start difference. First operand 996 states and 1727 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:40,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:40,344 INFO L93 Difference]: Finished difference Result 2873 states and 5026 transitions. [2022-11-16 12:40:40,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:40:40,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-11-16 12:40:40,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:40,354 INFO L225 Difference]: With dead ends: 2873 [2022-11-16 12:40:40,354 INFO L226 Difference]: Without dead ends: 1879 [2022-11-16 12:40:40,365 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 [2022-11-16 12:40:40,367 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 409 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 1676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:40,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 521 Invalid, 1676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-16 12:40:40,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2022-11-16 12:40:40,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1870. [2022-11-16 12:40:40,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1869 states have (on average 1.4724451578384163) internal successors, (2752), 1869 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:40,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 2752 transitions. [2022-11-16 12:40:40,423 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 2752 transitions. Word has length 102 [2022-11-16 12:40:40,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:40,426 INFO L495 AbstractCegarLoop]: Abstraction has 1870 states and 2752 transitions. [2022-11-16 12:40:40,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:40,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 2752 transitions. [2022-11-16 12:40:40,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-16 12:40:40,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:40,436 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:40,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:40:40,439 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:40,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:40,449 INFO L85 PathProgramCache]: Analyzing trace with hash 834662076, now seen corresponding path program 1 times [2022-11-16 12:40:40,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:40,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655729943] [2022-11-16 12:40:40,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:40,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:40,839 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:40,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:40,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655729943] [2022-11-16 12:40:40,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655729943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:40,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:40,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:40:40,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766335601] [2022-11-16 12:40:40,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:40,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:40:40,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:40,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:40:40,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:40,842 INFO L87 Difference]: Start difference. First operand 1870 states and 2752 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:44,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:44,259 INFO L93 Difference]: Finished difference Result 5454 states and 8042 transitions. [2022-11-16 12:40:44,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:40:44,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2022-11-16 12:40:44,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:44,276 INFO L225 Difference]: With dead ends: 5454 [2022-11-16 12:40:44,276 INFO L226 Difference]: Without dead ends: 3586 [2022-11-16 12:40:44,281 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 [2022-11-16 12:40:44,288 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 457 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:44,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 914 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-16 12:40:44,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3586 states. [2022-11-16 12:40:44,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3586 to 3583. [2022-11-16 12:40:44,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3582 states have (on average 1.3358458961474038) internal successors, (4785), 3582 states have internal predecessors, (4785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:44,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 4785 transitions. [2022-11-16 12:40:44,379 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 4785 transitions. Word has length 107 [2022-11-16 12:40:44,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:44,380 INFO L495 AbstractCegarLoop]: Abstraction has 3583 states and 4785 transitions. [2022-11-16 12:40:44,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:44,381 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 4785 transitions. [2022-11-16 12:40:44,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-16 12:40:44,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:44,392 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:44,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:40:44,393 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:44,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:44,394 INFO L85 PathProgramCache]: Analyzing trace with hash -923975225, now seen corresponding path program 1 times [2022-11-16 12:40:44,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:44,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804211397] [2022-11-16 12:40:44,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:44,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:44,753 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:44,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:44,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804211397] [2022-11-16 12:40:44,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804211397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:44,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:44,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:40:44,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714319242] [2022-11-16 12:40:44,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:44,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:40:44,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:44,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:40:44,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:44,758 INFO L87 Difference]: Start difference. First operand 3583 states and 4785 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:47,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:47,540 INFO L93 Difference]: Finished difference Result 10571 states and 14111 transitions. [2022-11-16 12:40:47,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:40:47,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-11-16 12:40:47,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:47,560 INFO L225 Difference]: With dead ends: 10571 [2022-11-16 12:40:47,560 INFO L226 Difference]: Without dead ends: 5286 [2022-11-16 12:40:47,565 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 [2022-11-16 12:40:47,566 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:47,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-16 12:40:47,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5286 states. [2022-11-16 12:40:47,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5286 to 4431. [2022-11-16 12:40:47,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4431 states, 4430 states have (on average 1.209255079006772) internal successors, (5357), 4430 states have internal predecessors, (5357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:47,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4431 states to 4431 states and 5357 transitions. [2022-11-16 12:40:47,664 INFO L78 Accepts]: Start accepts. Automaton has 4431 states and 5357 transitions. Word has length 148 [2022-11-16 12:40:47,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:47,664 INFO L495 AbstractCegarLoop]: Abstraction has 4431 states and 5357 transitions. [2022-11-16 12:40:47,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:47,665 INFO L276 IsEmpty]: Start isEmpty. Operand 4431 states and 5357 transitions. [2022-11-16 12:40:47,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-11-16 12:40:47,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:47,668 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:40:47,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:40:47,669 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:47,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:47,670 INFO L85 PathProgramCache]: Analyzing trace with hash -33662266, now seen corresponding path program 1 times [2022-11-16 12:40:47,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:47,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072021510] [2022-11-16 12:40:47,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:47,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:47,931 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:47,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:47,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072021510] [2022-11-16 12:40:47,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072021510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:47,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:47,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:40:47,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863838720] [2022-11-16 12:40:47,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:47,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:40:47,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:47,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:40:47,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:47,935 INFO L87 Difference]: Start difference. First operand 4431 states and 5357 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:50,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:50,399 INFO L93 Difference]: Finished difference Result 11410 states and 14012 transitions. [2022-11-16 12:40:50,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:40:50,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 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 189 [2022-11-16 12:40:50,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:50,420 INFO L225 Difference]: With dead ends: 11410 [2022-11-16 12:40:50,421 INFO L226 Difference]: Without dead ends: 6981 [2022-11-16 12:40:50,425 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 [2022-11-16 12:40:50,426 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:50,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 785 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-16 12:40:50,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6981 states. [2022-11-16 12:40:50,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6981 to 6981. [2022-11-16 12:40:50,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6981 states, 6980 states have (on average 1.1835243553008596) internal successors, (8261), 6980 states have internal predecessors, (8261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:50,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6981 states to 6981 states and 8261 transitions. [2022-11-16 12:40:50,557 INFO L78 Accepts]: Start accepts. Automaton has 6981 states and 8261 transitions. Word has length 189 [2022-11-16 12:40:50,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:50,558 INFO L495 AbstractCegarLoop]: Abstraction has 6981 states and 8261 transitions. [2022-11-16 12:40:50,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:50,559 INFO L276 IsEmpty]: Start isEmpty. Operand 6981 states and 8261 transitions. [2022-11-16 12:40:50,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-11-16 12:40:50,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:50,564 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:50,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:40:50,565 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:50,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:50,565 INFO L85 PathProgramCache]: Analyzing trace with hash -650402679, now seen corresponding path program 1 times [2022-11-16 12:40:50,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:50,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378616929] [2022-11-16 12:40:50,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:50,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:50,897 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-16 12:40:50,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:50,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378616929] [2022-11-16 12:40:50,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378616929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:50,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:50,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:40:50,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553718838] [2022-11-16 12:40:50,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:50,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:40:50,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:50,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:40:50,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:50,901 INFO L87 Difference]: Start difference. First operand 6981 states and 8261 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:53,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:53,685 INFO L93 Difference]: Finished difference Result 17786 states and 21271 transitions. [2022-11-16 12:40:53,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:40:53,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 269 [2022-11-16 12:40:53,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:53,720 INFO L225 Difference]: With dead ends: 17786 [2022-11-16 12:40:53,720 INFO L226 Difference]: Without dead ends: 9957 [2022-11-16 12:40:53,726 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 [2022-11-16 12:40:53,727 INFO L413 NwaCegarLoop]: 788 mSDtfsCounter, 384 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:53,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 858 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-16 12:40:53,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9957 states. [2022-11-16 12:40:53,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9957 to 9957. [2022-11-16 12:40:53,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9957 states, 9956 states have (on average 1.1449377259943752) internal successors, (11399), 9956 states have internal predecessors, (11399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:53,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9957 states to 9957 states and 11399 transitions. [2022-11-16 12:40:53,917 INFO L78 Accepts]: Start accepts. Automaton has 9957 states and 11399 transitions. Word has length 269 [2022-11-16 12:40:53,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:53,918 INFO L495 AbstractCegarLoop]: Abstraction has 9957 states and 11399 transitions. [2022-11-16 12:40:53,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:53,919 INFO L276 IsEmpty]: Start isEmpty. Operand 9957 states and 11399 transitions. [2022-11-16 12:40:53,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-11-16 12:40:53,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:53,926 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:53,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:40:53,927 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:53,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:53,927 INFO L85 PathProgramCache]: Analyzing trace with hash 303507172, now seen corresponding path program 1 times [2022-11-16 12:40:53,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:53,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919427161] [2022-11-16 12:40:53,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:53,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:54,200 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-11-16 12:40:54,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:54,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919427161] [2022-11-16 12:40:54,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919427161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:54,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:54,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:40:54,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028077763] [2022-11-16 12:40:54,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:54,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:40:54,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:54,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:40:54,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:40:54,203 INFO L87 Difference]: Start difference. First operand 9957 states and 11399 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:57,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:57,079 INFO L93 Difference]: Finished difference Result 25017 states and 28859 transitions. [2022-11-16 12:40:57,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:40:57,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 309 [2022-11-16 12:40:57,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:57,111 INFO L225 Difference]: With dead ends: 25017 [2022-11-16 12:40:57,111 INFO L226 Difference]: Without dead ends: 15062 [2022-11-16 12:40:57,120 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 [2022-11-16 12:40:57,121 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 463 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:57,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 368 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-16 12:40:57,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15062 states. [2022-11-16 12:40:57,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15062 to 13780. [2022-11-16 12:40:57,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13780 states, 13779 states have (on average 1.1398504971333188) internal successors, (15706), 13779 states have internal predecessors, (15706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:57,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13780 states to 13780 states and 15706 transitions. [2022-11-16 12:40:57,362 INFO L78 Accepts]: Start accepts. Automaton has 13780 states and 15706 transitions. Word has length 309 [2022-11-16 12:40:57,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:57,363 INFO L495 AbstractCegarLoop]: Abstraction has 13780 states and 15706 transitions. [2022-11-16 12:40:57,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:40:57,364 INFO L276 IsEmpty]: Start isEmpty. Operand 13780 states and 15706 transitions. [2022-11-16 12:40:57,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2022-11-16 12:40:57,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:57,375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:57,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:40:57,375 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:40:57,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:57,376 INFO L85 PathProgramCache]: Analyzing trace with hash -851527212, now seen corresponding path program 1 times [2022-11-16 12:40:57,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:57,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358803182] [2022-11-16 12:40:57,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:57,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:58,058 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:40:58,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:58,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358803182] [2022-11-16 12:40:58,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358803182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:58,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:58,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:40:58,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486422480] [2022-11-16 12:40:58,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:58,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:40:58,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:58,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:40:58,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:40:58,061 INFO L87 Difference]: Start difference. First operand 13780 states and 15706 transitions. Second operand has 4 states, 4 states have (on average 94.0) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:02,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:02,148 INFO L93 Difference]: Finished difference Result 32278 states and 36930 transitions. [2022-11-16 12:41:02,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:41:02,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 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 376 [2022-11-16 12:41:02,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:02,183 INFO L225 Difference]: With dead ends: 32278 [2022-11-16 12:41:02,184 INFO L226 Difference]: Without dead ends: 18075 [2022-11-16 12:41:02,193 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 [2022-11-16 12:41:02,194 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 638 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 2406 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 2736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 2406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:02,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 229 Invalid, 2736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 2406 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-16 12:41:02,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18075 states. [2022-11-16 12:41:02,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18075 to 18069. [2022-11-16 12:41:02,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18069 states, 18068 states have (on average 1.1503210095195926) internal successors, (20784), 18068 states have internal predecessors, (20784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:02,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18069 states to 18069 states and 20784 transitions. [2022-11-16 12:41:02,493 INFO L78 Accepts]: Start accepts. Automaton has 18069 states and 20784 transitions. Word has length 376 [2022-11-16 12:41:02,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:02,494 INFO L495 AbstractCegarLoop]: Abstraction has 18069 states and 20784 transitions. [2022-11-16 12:41:02,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:02,495 INFO L276 IsEmpty]: Start isEmpty. Operand 18069 states and 20784 transitions. [2022-11-16 12:41:02,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2022-11-16 12:41:02,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:02,510 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:41:02,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:41:02,510 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:02,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:02,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1472504530, now seen corresponding path program 1 times [2022-11-16 12:41:02,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:02,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726693755] [2022-11-16 12:41:02,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:02,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-16 12:41:03,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:03,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726693755] [2022-11-16 12:41:03,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726693755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:03,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:03,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:41:03,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66674704] [2022-11-16 12:41:03,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:03,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:41:03,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:03,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:41:03,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:41:03,254 INFO L87 Difference]: Start difference. First operand 18069 states and 20784 transitions. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:06,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:06,229 INFO L93 Difference]: Finished difference Result 41261 states and 47726 transitions. [2022-11-16 12:41:06,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:41:06,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 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 423 [2022-11-16 12:41:06,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:06,277 INFO L225 Difference]: With dead ends: 41261 [2022-11-16 12:41:06,277 INFO L226 Difference]: Without dead ends: 22339 [2022-11-16 12:41:06,296 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 [2022-11-16 12:41:06,300 INFO L413 NwaCegarLoop]: 788 mSDtfsCounter, 436 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:06,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 858 Invalid, 1496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-16 12:41:06,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22339 states. [2022-11-16 12:41:06,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22339 to 22334. [2022-11-16 12:41:06,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22334 states, 22333 states have (on average 1.141987193838714) internal successors, (25504), 22333 states have internal predecessors, (25504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:06,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22334 states to 22334 states and 25504 transitions. [2022-11-16 12:41:06,822 INFO L78 Accepts]: Start accepts. Automaton has 22334 states and 25504 transitions. Word has length 423 [2022-11-16 12:41:06,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:06,823 INFO L495 AbstractCegarLoop]: Abstraction has 22334 states and 25504 transitions. [2022-11-16 12:41:06,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:06,823 INFO L276 IsEmpty]: Start isEmpty. Operand 22334 states and 25504 transitions. [2022-11-16 12:41:06,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-11-16 12:41:06,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:06,858 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:06,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:41:06,858 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:06,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:06,860 INFO L85 PathProgramCache]: Analyzing trace with hash 2020726887, now seen corresponding path program 1 times [2022-11-16 12:41:06,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:06,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879079305] [2022-11-16 12:41:06,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:06,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:07,354 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-11-16 12:41:07,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:07,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879079305] [2022-11-16 12:41:07,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879079305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:07,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:07,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:41:07,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524127143] [2022-11-16 12:41:07,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:07,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:41:07,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:07,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:41:07,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:41:07,360 INFO L87 Difference]: Start difference. First operand 22334 states and 25504 transitions. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:10,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:10,630 INFO L93 Difference]: Finished difference Result 56175 states and 64291 transitions. [2022-11-16 12:41:10,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:41:10,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 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 479 [2022-11-16 12:41:10,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:10,681 INFO L225 Difference]: With dead ends: 56175 [2022-11-16 12:41:10,681 INFO L226 Difference]: Without dead ends: 33843 [2022-11-16 12:41:10,693 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 [2022-11-16 12:41:10,694 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 504 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:10,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 279 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-16 12:41:10,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33843 states. [2022-11-16 12:41:11,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33843 to 33397. [2022-11-16 12:41:11,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33397 states, 33396 states have (on average 1.134267576955324) internal successors, (37880), 33396 states have internal predecessors, (37880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:11,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33397 states to 33397 states and 37880 transitions. [2022-11-16 12:41:11,186 INFO L78 Accepts]: Start accepts. Automaton has 33397 states and 37880 transitions. Word has length 479 [2022-11-16 12:41:11,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:11,187 INFO L495 AbstractCegarLoop]: Abstraction has 33397 states and 37880 transitions. [2022-11-16 12:41:11,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:11,187 INFO L276 IsEmpty]: Start isEmpty. Operand 33397 states and 37880 transitions. [2022-11-16 12:41:11,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2022-11-16 12:41:11,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:11,219 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:11,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:41:11,219 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:11,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:11,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1681382793, now seen corresponding path program 1 times [2022-11-16 12:41:11,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:11,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631763715] [2022-11-16 12:41:11,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:11,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:12,184 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 14 proven. 90 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-16 12:41:12,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:12,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631763715] [2022-11-16 12:41:12,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631763715] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:41:12,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008774929] [2022-11-16 12:41:12,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:12,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:12,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:12,190 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:41:12,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:41:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:12,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:41:12,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:12,620 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-16 12:41:12,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:41:12,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008774929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:12,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:41:12,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-16 12:41:12,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801018057] [2022-11-16 12:41:12,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:12,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:41:12,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:12,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:41:12,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:41:12,623 INFO L87 Difference]: Start difference. First operand 33397 states and 37880 transitions. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:15,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:15,573 INFO L93 Difference]: Finished difference Result 73168 states and 82985 transitions. [2022-11-16 12:41:15,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:41:15,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 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 [2022-11-16 12:41:15,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:15,617 INFO L225 Difference]: With dead ends: 73168 [2022-11-16 12:41:15,618 INFO L226 Difference]: Without dead ends: 38048 [2022-11-16 12:41:15,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:41:15,641 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 496 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 1517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:15,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 664 Invalid, 1517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-16 12:41:15,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38048 states. [2022-11-16 12:41:16,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38048 to 38045. [2022-11-16 12:41:16,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38045 states, 38044 states have (on average 1.120912627483966) internal successors, (42644), 38044 states have internal predecessors, (42644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:16,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38045 states to 38045 states and 42644 transitions. [2022-11-16 12:41:16,376 INFO L78 Accepts]: Start accepts. Automaton has 38045 states and 42644 transitions. Word has length 480 [2022-11-16 12:41:16,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:16,377 INFO L495 AbstractCegarLoop]: Abstraction has 38045 states and 42644 transitions. [2022-11-16 12:41:16,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:16,378 INFO L276 IsEmpty]: Start isEmpty. Operand 38045 states and 42644 transitions. [2022-11-16 12:41:16,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2022-11-16 12:41:16,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:16,404 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:16,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:41:16,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 12:41:16,612 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:16,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:16,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1279903704, now seen corresponding path program 1 times [2022-11-16 12:41:16,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:16,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988645801] [2022-11-16 12:41:16,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:16,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:17,106 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-11-16 12:41:17,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:17,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988645801] [2022-11-16 12:41:17,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988645801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:17,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:17,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:41:17,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119907625] [2022-11-16 12:41:17,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:17,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:41:17,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:17,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:41:17,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:41:17,110 INFO L87 Difference]: Start difference. First operand 38045 states and 42644 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:19,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:19,602 INFO L93 Difference]: Finished difference Result 75654 states and 84794 transitions. [2022-11-16 12:41:19,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:41:19,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 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 504 [2022-11-16 12:41:19,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:19,645 INFO L225 Difference]: With dead ends: 75654 [2022-11-16 12:41:19,645 INFO L226 Difference]: Without dead ends: 37611 [2022-11-16 12:41:19,664 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 [2022-11-16 12:41:19,665 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 466 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:19,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 713 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-16 12:41:19,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37611 states. [2022-11-16 12:41:20,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37611 to 37184. [2022-11-16 12:41:20,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37184 states, 37183 states have (on average 1.0944786596025065) internal successors, (40696), 37183 states have internal predecessors, (40696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:20,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37184 states to 37184 states and 40696 transitions. [2022-11-16 12:41:20,198 INFO L78 Accepts]: Start accepts. Automaton has 37184 states and 40696 transitions. Word has length 504 [2022-11-16 12:41:20,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:20,199 INFO L495 AbstractCegarLoop]: Abstraction has 37184 states and 40696 transitions. [2022-11-16 12:41:20,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:20,200 INFO L276 IsEmpty]: Start isEmpty. Operand 37184 states and 40696 transitions. [2022-11-16 12:41:20,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2022-11-16 12:41:20,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:20,307 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:20,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:41:20,307 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:20,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:20,308 INFO L85 PathProgramCache]: Analyzing trace with hash -277505785, now seen corresponding path program 1 times [2022-11-16 12:41:20,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:20,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064635167] [2022-11-16 12:41:20,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:20,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:21,444 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 373 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:41:21,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:21,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064635167] [2022-11-16 12:41:21,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064635167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:21,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:21,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:41:21,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707267406] [2022-11-16 12:41:21,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:21,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:41:21,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:21,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:41:21,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:41:21,448 INFO L87 Difference]: Start difference. First operand 37184 states and 40696 transitions. Second operand has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:25,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:25,388 INFO L93 Difference]: Finished difference Result 96108 states and 105209 transitions. [2022-11-16 12:41:25,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:41:25,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 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 590 [2022-11-16 12:41:25,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:25,465 INFO L225 Difference]: With dead ends: 96108 [2022-11-16 12:41:25,465 INFO L226 Difference]: Without dead ends: 58926 [2022-11-16 12:41:25,489 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 [2022-11-16 12:41:25,490 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 538 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 2707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:25,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 173 Invalid, 2707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-16 12:41:25,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58926 states. [2022-11-16 12:41:26,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58926 to 56367. [2022-11-16 12:41:26,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56367 states, 56366 states have (on average 1.0933541496646915) internal successors, (61628), 56366 states have internal predecessors, (61628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:26,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56367 states to 56367 states and 61628 transitions. [2022-11-16 12:41:26,380 INFO L78 Accepts]: Start accepts. Automaton has 56367 states and 61628 transitions. Word has length 590 [2022-11-16 12:41:26,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:26,381 INFO L495 AbstractCegarLoop]: Abstraction has 56367 states and 61628 transitions. [2022-11-16 12:41:26,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:26,382 INFO L276 IsEmpty]: Start isEmpty. Operand 56367 states and 61628 transitions. [2022-11-16 12:41:26,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2022-11-16 12:41:26,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:26,410 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, 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, 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] [2022-11-16 12:41:26,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:41:26,410 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:26,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:26,411 INFO L85 PathProgramCache]: Analyzing trace with hash -728584266, now seen corresponding path program 1 times [2022-11-16 12:41:26,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:26,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546233393] [2022-11-16 12:41:26,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:26,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:27,783 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2022-11-16 12:41:27,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:27,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546233393] [2022-11-16 12:41:27,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546233393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:27,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:27,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:41:27,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063527945] [2022-11-16 12:41:27,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:27,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:41:27,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:27,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:41:27,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:41:27,787 INFO L87 Difference]: Start difference. First operand 56367 states and 61628 transitions. Second operand has 5 states, 5 states have (on average 69.6) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:31,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:31,734 INFO L93 Difference]: Finished difference Result 114909 states and 125533 transitions. [2022-11-16 12:41:31,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:41:31,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 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 596 [2022-11-16 12:41:31,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:31,788 INFO L225 Difference]: With dead ends: 114909 [2022-11-16 12:41:31,789 INFO L226 Difference]: Without dead ends: 57630 [2022-11-16 12:41:31,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:41:31,807 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 855 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 2935 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 3067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:31,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 205 Invalid, 3067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2935 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-16 12:41:31,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57630 states. [2022-11-16 12:41:32,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57630 to 57200. [2022-11-16 12:41:32,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57200 states, 57199 states have (on average 1.0880260144408118) internal successors, (62234), 57199 states have internal predecessors, (62234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:32,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57200 states to 57200 states and 62234 transitions. [2022-11-16 12:41:32,417 INFO L78 Accepts]: Start accepts. Automaton has 57200 states and 62234 transitions. Word has length 596 [2022-11-16 12:41:32,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:32,418 INFO L495 AbstractCegarLoop]: Abstraction has 57200 states and 62234 transitions. [2022-11-16 12:41:32,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:32,418 INFO L276 IsEmpty]: Start isEmpty. Operand 57200 states and 62234 transitions. [2022-11-16 12:41:32,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2022-11-16 12:41:32,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:32,436 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, 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, 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] [2022-11-16 12:41:32,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:41:32,436 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:32,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:32,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1471035311, now seen corresponding path program 1 times [2022-11-16 12:41:32,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:32,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190603988] [2022-11-16 12:41:32,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:32,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:33,765 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 366 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-11-16 12:41:33,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:33,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190603988] [2022-11-16 12:41:33,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190603988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:33,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:33,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:41:33,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833440862] [2022-11-16 12:41:33,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:33,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:41:33,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:33,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:41:33,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:41:33,771 INFO L87 Difference]: Start difference. First operand 57200 states and 62234 transitions. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:36,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:36,511 INFO L93 Difference]: Finished difference Result 126756 states and 138139 transitions. [2022-11-16 12:41:36,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:41:36,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 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 604 [2022-11-16 12:41:36,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:36,575 INFO L225 Difference]: With dead ends: 126756 [2022-11-16 12:41:36,575 INFO L226 Difference]: Without dead ends: 68269 [2022-11-16 12:41:36,596 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 [2022-11-16 12:41:36,597 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 192 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:36,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 615 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-16 12:41:36,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68269 states. [2022-11-16 12:41:37,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68269 to 64437. [2022-11-16 12:41:37,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64437 states, 64436 states have (on average 1.0878390961574276) internal successors, (70096), 64436 states have internal predecessors, (70096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:37,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64437 states to 64437 states and 70096 transitions. [2022-11-16 12:41:37,503 INFO L78 Accepts]: Start accepts. Automaton has 64437 states and 70096 transitions. Word has length 604 [2022-11-16 12:41:37,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:37,504 INFO L495 AbstractCegarLoop]: Abstraction has 64437 states and 70096 transitions. [2022-11-16 12:41:37,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:37,505 INFO L276 IsEmpty]: Start isEmpty. Operand 64437 states and 70096 transitions. [2022-11-16 12:41:37,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2022-11-16 12:41:37,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:37,531 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:37,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:41:37,531 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:37,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:37,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1774489779, now seen corresponding path program 1 times [2022-11-16 12:41:37,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:37,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063152776] [2022-11-16 12:41:37,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:37,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:39,058 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-16 12:41:39,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:39,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063152776] [2022-11-16 12:41:39,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063152776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:39,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:39,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:41:39,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163115005] [2022-11-16 12:41:39,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:39,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:41:39,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:39,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:41:39,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:41:39,062 INFO L87 Difference]: Start difference. First operand 64437 states and 70096 transitions. Second operand has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:41,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:41,434 INFO L93 Difference]: Finished difference Result 118205 states and 128347 transitions. [2022-11-16 12:41:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:41:41,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 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 633 [2022-11-16 12:41:41,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:41,500 INFO L225 Difference]: With dead ends: 118205 [2022-11-16 12:41:41,500 INFO L226 Difference]: Without dead ends: 65722 [2022-11-16 12:41:41,529 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 [2022-11-16 12:41:41,530 INFO L413 NwaCegarLoop]: 679 mSDtfsCounter, 99 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:41,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 733 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-16 12:41:41,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65722 states. [2022-11-16 12:41:42,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65722 to 64439. [2022-11-16 12:41:42,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64439 states, 64438 states have (on average 1.0878363698438809) internal successors, (70098), 64438 states have internal predecessors, (70098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:42,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64439 states to 64439 states and 70098 transitions. [2022-11-16 12:41:42,606 INFO L78 Accepts]: Start accepts. Automaton has 64439 states and 70098 transitions. Word has length 633 [2022-11-16 12:41:42,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:42,607 INFO L495 AbstractCegarLoop]: Abstraction has 64439 states and 70098 transitions. [2022-11-16 12:41:42,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:42,607 INFO L276 IsEmpty]: Start isEmpty. Operand 64439 states and 70098 transitions. [2022-11-16 12:41:42,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2022-11-16 12:41:42,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:42,647 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:42,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:41:42,647 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:42,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:42,648 INFO L85 PathProgramCache]: Analyzing trace with hash -719047658, now seen corresponding path program 1 times [2022-11-16 12:41:42,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:42,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073768010] [2022-11-16 12:41:42,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:42,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:43,798 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-16 12:41:43,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:43,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073768010] [2022-11-16 12:41:43,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073768010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:43,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:43,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:41:43,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390907032] [2022-11-16 12:41:43,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:43,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:41:43,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:43,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:41:43,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:41:43,802 INFO L87 Difference]: Start difference. First operand 64439 states and 70098 transitions. Second operand has 4 states, 4 states have (on average 138.25) internal successors, (553), 4 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:47,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:47,866 INFO L93 Difference]: Finished difference Result 136961 states and 148854 transitions. [2022-11-16 12:41:47,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:41:47,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 138.25) internal successors, (553), 4 states have internal predecessors, (553), 0 states have call successors, (0), 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 634 [2022-11-16 12:41:47,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:47,947 INFO L225 Difference]: With dead ends: 136961 [2022-11-16 12:41:47,947 INFO L226 Difference]: Without dead ends: 72524 [2022-11-16 12:41:47,970 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 [2022-11-16 12:41:47,971 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 770 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 2695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:47,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 162 Invalid, 2695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-16 12:41:48,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72524 states. [2022-11-16 12:41:48,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72524 to 61463. [2022-11-16 12:41:48,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61463 states, 61462 states have (on average 1.0823761023071166) internal successors, (66525), 61462 states have internal predecessors, (66525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:49,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61463 states to 61463 states and 66525 transitions. [2022-11-16 12:41:49,003 INFO L78 Accepts]: Start accepts. Automaton has 61463 states and 66525 transitions. Word has length 634 [2022-11-16 12:41:49,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:49,004 INFO L495 AbstractCegarLoop]: Abstraction has 61463 states and 66525 transitions. [2022-11-16 12:41:49,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.25) internal successors, (553), 4 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:49,005 INFO L276 IsEmpty]: Start isEmpty. Operand 61463 states and 66525 transitions. [2022-11-16 12:41:49,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2022-11-16 12:41:49,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:49,045 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:41:49,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:41:49,046 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:49,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:49,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1361734072, now seen corresponding path program 1 times [2022-11-16 12:41:49,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:49,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570302314] [2022-11-16 12:41:49,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:49,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:50,526 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 461 proven. 160 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-16 12:41:50,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:50,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570302314] [2022-11-16 12:41:50,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570302314] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:41:50,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659764709] [2022-11-16 12:41:50,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:50,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:41:50,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:41:50,531 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:41:50,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:41:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:50,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:41:50,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:51,179 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 391 proven. 78 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-11-16 12:41:51,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:41:51,598 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 469 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-11-16 12:41:51,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659764709] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:41:51,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:41:51,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 8 [2022-11-16 12:41:51,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989330518] [2022-11-16 12:41:51,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:51,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:41:51,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:51,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:41:51,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:41:51,603 INFO L87 Difference]: Start difference. First operand 61463 states and 66525 transitions. Second operand has 4 states, 4 states have (on average 133.25) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:56,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:56,168 INFO L93 Difference]: Finished difference Result 138258 states and 149584 transitions. [2022-11-16 12:41:56,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:41:56,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 133.25) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 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 726 [2022-11-16 12:41:56,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:56,242 INFO L225 Difference]: With dead ends: 138258 [2022-11-16 12:41:56,242 INFO L226 Difference]: Without dead ends: 76797 [2022-11-16 12:41:56,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1454 GetRequests, 1448 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:41:56,264 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 805 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2229 mSolverCounterSat, 452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 2681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 2229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:56,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 166 Invalid, 2681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [452 Valid, 2229 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-16 12:41:56,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76797 states. [2022-11-16 12:41:57,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76797 to 69989. [2022-11-16 12:41:57,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69989 states, 69988 states have (on average 1.0794564782534148) internal successors, (75549), 69988 states have internal predecessors, (75549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:57,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69989 states to 69989 states and 75549 transitions. [2022-11-16 12:41:57,251 INFO L78 Accepts]: Start accepts. Automaton has 69989 states and 75549 transitions. Word has length 726 [2022-11-16 12:41:57,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:57,251 INFO L495 AbstractCegarLoop]: Abstraction has 69989 states and 75549 transitions. [2022-11-16 12:41:57,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.25) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:41:57,252 INFO L276 IsEmpty]: Start isEmpty. Operand 69989 states and 75549 transitions. [2022-11-16 12:41:57,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2022-11-16 12:41:57,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:57,290 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:57,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:41:57,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:41:57,491 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:41:57,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:57,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1325675448, now seen corresponding path program 1 times [2022-11-16 12:41:57,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:41:57,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301567595] [2022-11-16 12:41:57,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:57,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:41:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:58,199 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 571 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-11-16 12:41:58,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:41:58,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301567595] [2022-11-16 12:41:58,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301567595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:41:58,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:41:58,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:41:58,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125722639] [2022-11-16 12:41:58,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:41:58,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:41:58,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:41:58,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:41:58,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:41:58,204 INFO L87 Difference]: Start difference. First operand 69989 states and 75549 transitions. Second operand has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:00,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:00,898 INFO L93 Difference]: Finished difference Result 137838 states and 148774 transitions. [2022-11-16 12:42:00,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:42:00,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 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 751 [2022-11-16 12:42:00,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:00,972 INFO L225 Difference]: With dead ends: 137838 [2022-11-16 12:42:00,972 INFO L226 Difference]: Without dead ends: 68276 [2022-11-16 12:42:00,991 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 [2022-11-16 12:42:00,991 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 489 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:00,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 658 Invalid, 1301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-16 12:42:01,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68276 states. [2022-11-16 12:42:01,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68276 to 67847. [2022-11-16 12:42:01,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67847 states, 67846 states have (on average 1.07279721722725) internal successors, (72785), 67846 states have internal predecessors, (72785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:01,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67847 states to 67847 states and 72785 transitions. [2022-11-16 12:42:01,828 INFO L78 Accepts]: Start accepts. Automaton has 67847 states and 72785 transitions. Word has length 751 [2022-11-16 12:42:01,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:01,828 INFO L495 AbstractCegarLoop]: Abstraction has 67847 states and 72785 transitions. [2022-11-16 12:42:01,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:01,828 INFO L276 IsEmpty]: Start isEmpty. Operand 67847 states and 72785 transitions. [2022-11-16 12:42:01,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2022-11-16 12:42:01,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:01,856 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:01,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:42:01,857 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:42:01,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:01,857 INFO L85 PathProgramCache]: Analyzing trace with hash -2043822140, now seen corresponding path program 1 times [2022-11-16 12:42:01,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:01,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457256179] [2022-11-16 12:42:01,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:01,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:02,816 INFO L134 CoverageAnalysis]: Checked inductivity of 815 backedges. 510 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-11-16 12:42:02,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:02,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457256179] [2022-11-16 12:42:02,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457256179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:02,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:02,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:42:02,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939010114] [2022-11-16 12:42:02,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:02,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:42:02,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:02,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:42:02,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:42:02,820 INFO L87 Difference]: Start difference. First operand 67847 states and 72785 transitions. Second operand has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:06,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:06,772 INFO L93 Difference]: Finished difference Result 156568 states and 168036 transitions. [2022-11-16 12:42:06,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:42:06,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 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 776 [2022-11-16 12:42:06,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:06,862 INFO L225 Difference]: With dead ends: 156568 [2022-11-16 12:42:06,862 INFO L226 Difference]: Without dead ends: 89148 [2022-11-16 12:42:06,893 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 [2022-11-16 12:42:06,894 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 579 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 2244 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 2554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 2244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:06,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 257 Invalid, 2554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 2244 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-16 12:42:06,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89148 states. [2022-11-16 12:42:08,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89148 to 75916. [2022-11-16 12:42:08,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75916 states, 75915 states have (on average 1.0648093262201146) internal successors, (80835), 75915 states have internal predecessors, (80835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:08,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75916 states to 75916 states and 80835 transitions. [2022-11-16 12:42:08,417 INFO L78 Accepts]: Start accepts. Automaton has 75916 states and 80835 transitions. Word has length 776 [2022-11-16 12:42:08,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:08,417 INFO L495 AbstractCegarLoop]: Abstraction has 75916 states and 80835 transitions. [2022-11-16 12:42:08,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:08,418 INFO L276 IsEmpty]: Start isEmpty. Operand 75916 states and 80835 transitions. [2022-11-16 12:42:08,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2022-11-16 12:42:08,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:08,446 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 12:42:08,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 12:42:08,447 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:42:08,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:08,448 INFO L85 PathProgramCache]: Analyzing trace with hash 96273895, now seen corresponding path program 1 times [2022-11-16 12:42:08,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:08,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17398246] [2022-11-16 12:42:08,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:08,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:09,332 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 516 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2022-11-16 12:42:09,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:09,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17398246] [2022-11-16 12:42:09,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17398246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:09,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:09,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:42:09,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831892776] [2022-11-16 12:42:09,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:09,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:42:09,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:09,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:42:09,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:42:09,339 INFO L87 Difference]: Start difference. First operand 75916 states and 80835 transitions. Second operand has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:13,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:13,630 INFO L93 Difference]: Finished difference Result 163773 states and 174095 transitions. [2022-11-16 12:42:13,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:42:13,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 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 782 [2022-11-16 12:42:13,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:13,709 INFO L225 Difference]: With dead ends: 163773 [2022-11-16 12:42:13,709 INFO L226 Difference]: Without dead ends: 88284 [2022-11-16 12:42:13,727 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 [2022-11-16 12:42:13,728 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 586 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2366 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 2634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 2366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:13,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 286 Invalid, 2634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 2366 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-16 12:42:13,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88284 states. [2022-11-16 12:42:14,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88284 to 76343. [2022-11-16 12:42:14,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76343 states, 76342 states have (on average 1.0646040187576957) internal successors, (81274), 76342 states have internal predecessors, (81274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:14,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76343 states to 76343 states and 81274 transitions. [2022-11-16 12:42:14,749 INFO L78 Accepts]: Start accepts. Automaton has 76343 states and 81274 transitions. Word has length 782 [2022-11-16 12:42:14,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:14,750 INFO L495 AbstractCegarLoop]: Abstraction has 76343 states and 81274 transitions. [2022-11-16 12:42:14,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:14,750 INFO L276 IsEmpty]: Start isEmpty. Operand 76343 states and 81274 transitions. [2022-11-16 12:42:14,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2022-11-16 12:42:14,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:14,778 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, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:14,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 12:42:14,778 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:42:14,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:14,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1280526696, now seen corresponding path program 1 times [2022-11-16 12:42:14,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:14,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067249804] [2022-11-16 12:42:14,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:14,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:15,642 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 651 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-11-16 12:42:15,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:15,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067249804] [2022-11-16 12:42:15,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067249804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:15,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:15,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:42:15,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807705733] [2022-11-16 12:42:15,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:15,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:42:15,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:15,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:42:15,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:42:15,645 INFO L87 Difference]: Start difference. First operand 76343 states and 81274 transitions. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:18,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:18,572 INFO L93 Difference]: Finished difference Result 160358 states and 170654 transitions. [2022-11-16 12:42:18,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:42:18,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 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 788 [2022-11-16 12:42:18,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:18,667 INFO L225 Difference]: With dead ends: 160358 [2022-11-16 12:42:18,667 INFO L226 Difference]: Without dead ends: 82734 [2022-11-16 12:42:18,701 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 [2022-11-16 12:42:18,702 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 306 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:18,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 605 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-16 12:42:18,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82734 states. [2022-11-16 12:42:19,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82734 to 78044. [2022-11-16 12:42:19,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78044 states, 78043 states have (on average 1.0603000909754878) internal successors, (82749), 78043 states have internal predecessors, (82749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:19,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78044 states to 78044 states and 82749 transitions. [2022-11-16 12:42:19,909 INFO L78 Accepts]: Start accepts. Automaton has 78044 states and 82749 transitions. Word has length 788 [2022-11-16 12:42:19,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:19,909 INFO L495 AbstractCegarLoop]: Abstraction has 78044 states and 82749 transitions. [2022-11-16 12:42:19,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:19,909 INFO L276 IsEmpty]: Start isEmpty. Operand 78044 states and 82749 transitions. [2022-11-16 12:42:19,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2022-11-16 12:42:19,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:19,937 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, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:19,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 12:42:19,937 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:42:19,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:19,938 INFO L85 PathProgramCache]: Analyzing trace with hash 706382245, now seen corresponding path program 1 times [2022-11-16 12:42:19,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:19,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482155729] [2022-11-16 12:42:19,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:19,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:22,928 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 754 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-16 12:42:22,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:22,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482155729] [2022-11-16 12:42:22,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482155729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:22,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:22,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:42:22,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742097080] [2022-11-16 12:42:22,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:22,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:42:22,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:22,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:42:22,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:42:22,934 INFO L87 Difference]: Start difference. First operand 78044 states and 82749 transitions. Second operand has 6 states, 6 states have (on average 129.0) internal successors, (774), 5 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:28,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:28,228 INFO L93 Difference]: Finished difference Result 156405 states and 165823 transitions. [2022-11-16 12:42:28,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:42:28,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 129.0) internal successors, (774), 5 states have internal predecessors, (774), 0 states have call successors, (0), 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 808 [2022-11-16 12:42:28,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:28,301 INFO L225 Difference]: With dead ends: 156405 [2022-11-16 12:42:28,301 INFO L226 Difference]: Without dead ends: 78788 [2022-11-16 12:42:28,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:42:28,320 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 1447 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 4168 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 4339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 4168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:28,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 256 Invalid, 4339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 4168 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-16 12:42:28,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78788 states. [2022-11-16 12:42:29,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78788 to 78469. [2022-11-16 12:42:29,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78469 states, 78468 states have (on average 1.0599989804761176) internal successors, (83176), 78468 states have internal predecessors, (83176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:29,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78469 states to 78469 states and 83176 transitions. [2022-11-16 12:42:29,461 INFO L78 Accepts]: Start accepts. Automaton has 78469 states and 83176 transitions. Word has length 808 [2022-11-16 12:42:29,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:29,462 INFO L495 AbstractCegarLoop]: Abstraction has 78469 states and 83176 transitions. [2022-11-16 12:42:29,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.0) internal successors, (774), 5 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:29,462 INFO L276 IsEmpty]: Start isEmpty. Operand 78469 states and 83176 transitions. [2022-11-16 12:42:29,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2022-11-16 12:42:29,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:29,496 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:29,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 12:42:29,497 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:42:29,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:29,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1551425783, now seen corresponding path program 1 times [2022-11-16 12:42:29,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:29,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270205480] [2022-11-16 12:42:29,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:29,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:31,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 1060 proven. 105 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-16 12:42:31,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:31,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270205480] [2022-11-16 12:42:31,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270205480] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:42:31,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6078164] [2022-11-16 12:42:31,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:31,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:31,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:42:31,173 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:42:31,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:42:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:31,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:42:31,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1247 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 1073 trivial. 0 not checked. [2022-11-16 12:42:52,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:42:52,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6078164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:52,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:42:52,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-16 12:42:52,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476152550] [2022-11-16 12:42:52,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:52,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:42:52,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:52,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:42:52,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:42:52,274 INFO L87 Difference]: Start difference. First operand 78469 states and 83176 transitions. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:55,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:42:55,327 INFO L93 Difference]: Finished difference Result 165027 states and 174724 transitions. [2022-11-16 12:42:55,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:42:55,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 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 881 [2022-11-16 12:42:55,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:42:55,413 INFO L225 Difference]: With dead ends: 165027 [2022-11-16 12:42:55,413 INFO L226 Difference]: Without dead ends: 86556 [2022-11-16 12:42:55,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 885 GetRequests, 881 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:42:55,446 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 468 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:42:55,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 122 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-16 12:42:55,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86556 states. [2022-11-16 12:42:56,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86556 to 69912. [2022-11-16 12:42:56,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69912 states, 69911 states have (on average 1.0581310523379726) internal successors, (73975), 69911 states have internal predecessors, (73975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:56,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69912 states to 69912 states and 73975 transitions. [2022-11-16 12:42:56,356 INFO L78 Accepts]: Start accepts. Automaton has 69912 states and 73975 transitions. Word has length 881 [2022-11-16 12:42:56,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:42:56,356 INFO L495 AbstractCegarLoop]: Abstraction has 69912 states and 73975 transitions. [2022-11-16 12:42:56,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:56,357 INFO L276 IsEmpty]: Start isEmpty. Operand 69912 states and 73975 transitions. [2022-11-16 12:42:56,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2022-11-16 12:42:56,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:42:56,391 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:56,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:42:56,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d848aa05-90f0-4d61-bf0e-5dab8a7f3474/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:56,597 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:42:56,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:56,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1614217377, now seen corresponding path program 1 times [2022-11-16 12:42:56,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:56,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831359460] [2022-11-16 12:42:56,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:56,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:57,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 1052 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-11-16 12:42:57,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:57,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831359460] [2022-11-16 12:42:57,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831359460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:57,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:57,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:42:57,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759180572] [2022-11-16 12:42:57,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:57,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:42:57,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:57,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:42:57,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:42:57,565 INFO L87 Difference]: Start difference. First operand 69912 states and 73975 transitions. Second operand has 4 states, 4 states have (on average 200.5) internal successors, (802), 4 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:01,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:43:01,635 INFO L93 Difference]: Finished difference Result 159409 states and 168560 transitions. [2022-11-16 12:43:01,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:43:01,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 200.5) internal successors, (802), 4 states have internal predecessors, (802), 0 states have call successors, (0), 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 956 [2022-11-16 12:43:01,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:43:01,739 INFO L225 Difference]: With dead ends: 159409 [2022-11-16 12:43:01,739 INFO L226 Difference]: Without dead ends: 89499 [2022-11-16 12:43:01,776 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 [2022-11-16 12:43:01,777 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 328 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 2614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:43:01,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 187 Invalid, 2614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-16 12:43:01,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89499 states. [2022-11-16 12:43:02,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89499 to 76315. [2022-11-16 12:43:02,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76315 states, 76314 states have (on average 1.0573551379825459) internal successors, (80691), 76314 states have internal predecessors, (80691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:02,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76315 states to 76315 states and 80691 transitions. [2022-11-16 12:43:02,908 INFO L78 Accepts]: Start accepts. Automaton has 76315 states and 80691 transitions. Word has length 956 [2022-11-16 12:43:02,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:43:02,909 INFO L495 AbstractCegarLoop]: Abstraction has 76315 states and 80691 transitions. [2022-11-16 12:43:02,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 200.5) internal successors, (802), 4 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:02,909 INFO L276 IsEmpty]: Start isEmpty. Operand 76315 states and 80691 transitions. [2022-11-16 12:43:02,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 962 [2022-11-16 12:43:02,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:43:02,982 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:43:02,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 12:43:02,983 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:43:02,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:43:02,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1105136907, now seen corresponding path program 1 times [2022-11-16 12:43:02,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:43:02,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995376861] [2022-11-16 12:43:02,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:43:02,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:43:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat